New Circuits Page 111
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The following circuit shows about MC14093B Fluid Level Sensor Circuit Diagram. Features: compact and simple, single-chip circuit, for a wide range ....
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This Simple circuit can monitor overflow of water from the Overhead tank. The sensor placed close to the lid of the overhead tank always monitor the presen....
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This project is best suited for use as a sensor on a robot. This circuit will actually allow you to measure distances from an object. It measures in a `unit` and it`s range is about 10 inches. As the receiver and transmitter, you will use an ultrasonic....
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Simple Burglar Alarm / Door Alarm Circuit Diagram. You can use this Simple project to protect the door or Window. It gives a loud beep and switch on the room light when an intruder attempts to breaks the door lock ..
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International Rectifier`s IRAM109-015SD is a multi-chip Hybrid IC developed for low power appliance motor control applications such as Fans, Pumps, refrigerator compressors, etc. The compact Single in line (SIP-S) package minimizes PCB space. Several....
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An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance`s total power....
-
A cellular rotary phone - the dialing takes forever! And here in Colorado - on a 10-digit dialing system - you don`t dare mess up the number. Where do you even buy a rotary phone these days Oddly enough, there are quite a few phones on Froogle that had push....
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In these times with viruses and other threats from the Internet it would be nice to have reassurance that the PC cannot be infected. That is why this circuit was designed. It makes it possible to install multiple hard disks inside the case of a PC, which are....
-
3-state sound generator with LM556 . LM556 is a dual timer that can be operated as two LM555. The two timers operate independently of each other sharing only VCC and ground.You can define timing...
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This circuit has accouterment for abutting stereo outputs from four altered sources/channels as inputs and alone one of them is selected/connected to the achievement at any one time. When ability accumulation is angry on`, approach A (AR and AL) is selected.....
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The beat frequency oscillator (bfo) is necessary when you want to receive cw signals. Cw signals are not modulated with an audio component, you remember, so we must provide one. The action of the rf amplifier, mixer, local oscillator, and IF amplifier is the....
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The DZ-2 was built by RCA, Camden NJ, for the U. S. Navy for use in naval aircraft as a Radio Direction Finder. With a contract date of June 30 1939, the receiver is an interesting example of pre-war design. The receiver was powered by the aircraft`s 24v DC....
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The principle of the circuit The motorcycle anti-thief alarm circuit is composed of the detection alarm circuit, the charging circuit and the anti-theft control circuit, this circuit is as shown in figure 7-94. The detection alarm circuit is composed of the....
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Customs by Ripper - Tech page about basic wiring for any vehicle, but motorcycles in particular....
-
A split-phase data signal consists of a series of binary digits that occur at a periodic rate, as shown in waveform A in the timing chart. The weight of each...
-
This is a fun and non-dangeros project for those people who like to throw projectiles magnetically. It simply works by placing a ferromagnetic projectile at one end of a coil and pulsing some power in it. The trick is to switch off power when the projectile....
-
This is simple transmitter circuit diagram which has some what good coverage. This circuit can be operated with 9-12V power supply. To tune this ....
-
A tuned radio frequency receiver (TRF receiver) is a radio receiver that is usually composed of several tuned radio frequency amplifiers followed by circuits to detect and amplify the audio signal. A 3 stage TRF receiver includes a RF stage, a detector stage....
-
A summary of the varactor or varicap diode used in many radio frequency circuits to provide an electronically variable capacitance ..
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Here is a very simple, inexpensive and interesting project which provides lot of fun to a home experimenter or hobbyist. This simple transmitter can trans....
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Here the simple audio mic pre amplifier circuit based on single IC LM358. The circuit is very simple, inexpensive and easy to built. Component Parts List: R1, R3, R4 = 10K R2 = 1K R5 = 100K-1M Potensiometer C1 = 0. 1uF C2 = 4. 7uF/16V IC1 = LM358 dual op-amp....
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DIY Intercom Circuit Intercom Cable Full-duplex Intercom circuit schematic , cable on the way to the intercom circuit....
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This is circuit of soft light dimmer. This circuit uses the IGBT STGP10N50A and the TS555 timer as main components. Here is the circuit: The timer is...
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RF Cafe visitor David M. wrote to ask that I scan and post this article from the January 1963 edition of Popular Electronics. It is an article written by Philip Hatfield, of the Receiving Tube Department of General Electric that describe a very simple design....
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Crystal radios require no outside sources of power to operate, just the radio waves themselves. The first crystal set I built was a "variometer" radio. In this design, one larger coil slides over a smaller coil to change the coil`s inductance, eliminating....
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This alarm circuit is an anti- theft wireless alarm can be used with any vehicle having 6- to 12-volt DC supply system. The mini VHF FM radio-controlled, FM transmitter is fitted in the vehicle at night when it is parked in the car porch or car park. The....
-
-
This simple circuit protects an SLA battery from over-discharge by disconnecting the load when the terminal voltage drops below a preset level. In operation, a sample of the battery voltage is derived from the 22k © resistor and 20k © trimpot divider. This....
-
New uTracker on GE865 Small size. New edition of tracker (SIM300DZ, EB-230/LEA-5S). Add OBD-II (ISO) sensor, accelerometer and RFID reader. Add TR24 2.4GHz module except USB link to host. Change all to SPI (free 3 pins to buttons ?) Add u-blox LEA-5S...
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This circuit lets you keep the appliances plugged into your inverter. It won`t make the wind blow or the clouds go away, but it will keep your batteries safely charged even if you have a generation shortfall. I call it the Grid Charger Voltage Switch. The....
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The mine railway connects the national railways and intermediate links of the mining area, it is the important constituent element of the transport network of the railway. Relevant materials statistics show, the Chinese mine railway exceeds 20, 000....
-
A circuit that uses one cycle in an alternating current to produce direct current. A Half-Wave rectifier circuit only generates DC from either the positive or negative cycle of the AC input, but not both. Note that the Half-wave Rectifier circuit does not....
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Make a basic RF oscillator. The circuit is ridiculously simple, so I will skip all the complicated maths and make component selection simple by using calculators. Let us assume I want an oscillator for 7MHz. The circuit looks like this: The first transistor....
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National Semiconductor has been producing and designing ICs for use in switch-mode power supplies for many years. The application of these devices is normally straightforward, helped by the excellent documentation that is available. A typical example of a....
-
The circuit below uses two quad voltage comparators (LM339) to illuminate a series of 8 LEDs indicating volume level. Each of the 8 comparators is biased at increasing voltages set by the voltage divider so that the lower right LED comes on first when the....
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This circuit is 5 channel Equalizer simply cheap (one line chanel). Working principle of this series is a series of frequentiefilter with center frequency of 10...
-
Industrial grade clear glass sensor modules are widely available but not within the reach of an average electronics hobbyist. The simple clear glass sensor....
-
Amplifier circuit here is all based on the ic in the gains. Three IC TA7230P, TA7236P, TA7237AP is intregated circuit (IC) which was applied to the power amplifier. Each IC has a different output, different input voltage, all IC TA7230P, TA7236P, TA7237AP is....
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-
One of the best RF amplifiers ever published was Wes Hayward`s post mixer amplifier in the Progressive Communications Receiver. It quickly became known as a great high level RF amplifier. With a standing current of 50ma, it takes a very strong signal to....
-
The Colpitts Oscillator is characterised by tapping the mid-point of the capacitive side of the oscillator section. The inductor can be the primary side of a speaker transformer. The feedback comes via the inductor....
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-
This little transmitter is suitable for less demanding Doppler propagation measurements. It is designed for use on 80m, but can be easily adapted for 40m or 20m. The output is about 500mW of unmodulated carrier, with a stability of about one part in 106, or....
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Laser Command is a game which I build using a 8x8 matrix LED and an Arduino Mini. This game was developed as a "sample" class project in S10-05833 Gadgets, Sensors and Activity Recognition in HCI. The class is taught by Scott Hudson at Carnegie Mellon....
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From Figure 1, the host microprocessor (uP) controls the HMC6352 via I2C serial data interface lines for data (SDA) and clock (SCL). Two external 10k-ohm pull-up resistors to the nominal 3 volt DC supply create normally high logic states when the interface....
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This document was written with care, but errors cannot be excluded. Neither the company named above nor the seller assumes legal liability for mistakes, resulting operational errors or the consequences thereof. Trademarks, company names and product names may....
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This circuit is a modification of High & Low voltage cut-off with delay& alarm circuit appeared in Circuits today, which I have tried and found to be quite reliable. You can adopt this circuit with small modification. Use a transformer with secondary 15 0 15....
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This room light controller project automatically using Microcontroller Visitors Counter is a reliable circuit that takes the task of controlling the room...
-
The EMD SD45 was manufactured starting in 1965 so that it represents one of the newest prototypes available in Large Scale. SD45`s are still running all over the country, but they are getting fewer over time due to very high miles in the last 30 to 35 years.....
-
This application report presents one possible solution to the telecom plug-in power problem, based on a nominal 48 Vdc system bus and a module needing two low-voltage supply outputs. The material includes a detailed design methodology for tailoring the....
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Using the superposition theorem, I need to find the current of all the 3 nodes of the circuit. Using superposition I`ve found that the current from the source: Do you mean i_1 is the current through V1 when the other voltage sources are shorted out, in line....
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The schematic diagram come from circuit: 60 Watt Switching Power Supply power supply. Go to that page to read the explanation about above power supply related circuit diagram. The schematic shows the power supply capacity of 70W stereo amplifier Power....
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This page provides soft power switch circuits for toggling electronic devices ON and OFF with a momentary button press that controls a latching high-side MOSFET power switch. Several micropower latching switch circuits are provided. Owing to their low....
-
This project started because I wanted a Li-ion charging circuit with more flexibility than afforded by other do-it-yourself circuits, but at less cost than the programmable computerized chargers. The goal from the beginning was to design, build, test and....
-
This page describes the installation and use of a Soundtraxx Sierra sound system. The Sierra worked quite well and was reasonably priced, but time marches on. As of September 2008, the Sierra went out of production and was not replaced by an updated stand....
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This page features a circuit that has twenty open collector outputs that turn on one at a time in a continuous sequential manner. The circuit make use of the 74LSxx family of TTL integrated logic devices. The circuits are designed to drive light emitting....
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With extended periods of bright sunshine and warm weather, even relatively large storage batteries in solar-power systems can become rather warm. Consequently, a circuit is usually connected in parallel with the storage battery to either connect a high-power....
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// 555 Timer With On Off Delay Circuit Here is a timer circuit using common IC 555. The circuit is designed to facilitate time adjustment of both...
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The intended result is that the relay oscillates and the LEDs flash when the button is pressed, however when I press the button the leftmost LED lights constantly and nothing else happens. I get voltage across the left LED, the resistor and the capacitor,....
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Here is the 1963 Mercury V8 Monterey wiring diagram. This is the right side of the wiring diagrams, earlier, we have shown the Mercury V8 Monterey 1963 Wiring Diagram Left Side Part. This wiring diagram is very clear, and it shows a complete components and....
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Aim of this project is to present a way to store a large quantity of data into microSD card in files with FAT32 format. Here, ATmega32 is used for data collection and microSD interface. The data is received from in-build 8-channel ADC of ATmega32. One....
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Here is a quick guide, which will help you to get started off with kiCAD. In this tutorial we will be considering a simple astable multivibrator circuit using 555 timer IC ..
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The design is based loosely on some ideas from K8CU and AG6K. However, I have simplified the circuit somewhat and used different components. The mechanical encapsulation is also different. I used LTspice to verify the tester before building it. The schematic....
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A preamplifier operating on a single supply and suitable for use with high impedance type crystal pickups is shown here. The circuit is basically a non-inverting AC amplifier in which the gain is dependent on the feedback resistor R4. The smaller is the R4,....
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-
The MSK4204RH is a radiation hardened complete H-Bridge microcircuit intended for use in DC brushed Motor Control applications or Class D switchmode amplification in space or other severe operating environments. The internal compo- nents have been selected....
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This Circuit have output voltage 14 volt with current maximum 4A. Can be use on nicad battery and accu, wet and dry. But the accu must be 12 Volt and have current 4A or higher. The current fillter voltage build of IC CA3140 or LM324. You can which two IC.....
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Here`s an another project, which makes an Scrolling LED display. Here 64 leds which are connected to an Matrix display. The Anodes are drived through an Driver...
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This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up to about 30KV, depending on the transformer used. It is cheap and easy to make, thanks to the standard TV flyback transformer used. It can power LASERS (although....
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The HV739 is a monolithic single channel, high-speed, high voltage, ultrasound transmitter pulser. This integrated, high performance circuit is in a single, 5x5mm, 32-lead QFN package. The HV739 CAN deliver up to a ±3. 0A source and sink current to a....
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This is one of mine projects which can be helpful for controlling water level in water tank. I made it on one of Atarado SMART prototyping PCB for which I can tell all the best. Controller for water tank managing water pump and take care of water level. This....
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Data Collection - Analog to Digital Conversion and Communicating with a PC through the Serial Port Microcontroller Advanced Kit....
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An infrared remote control tester circuit that can be made without spenting much money. This IR tester build around an infrared reciever module TSOP1738. We can observe the remote control state by listening to the buzzer sound. The circuit is very sensitive....
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But the idea is to apply this code to other projects with 7 segment displays that I might do later. if you want to learn a bit more of 7 segment displays you can read more at this post I`ve made. ..
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Fading a video signal can`t be done simply by attenuating the composite signal, since the synchronization signal may drop below unacceptable level. Here a ...
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Here we have an astable oscillator built around 555, which gives an alarm tone of 1. 8 KHz directly driving a speaker. This is basic alarm circuit, which is later used in many other projects in the book. While the circuit shows only 1. 8 KHz operation, it....
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If you need more sensitivity, use 74AC04 or 74HC04 instead of 74HCU04 as U1. It may be better than 74HCU04, but the frequency response of 74HC04 may be worse...
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Solar/battery powered FSK transmiter regarding power supply section, including battery management. My main goal is to charge battery and supply power to the transmitter over day via solar cells and use battery over night and during low light periods. Since I....
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The two circuits illustrate opening a relay contact a short time after the ignition or ligh switch is turned off. The capacitor is charged and the relay is closed when the voltage at the diode anode rises to +12 volts....
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A community dedicated to helping everyone learn the art of audio. Projects by fanatics, for fanatics!....
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All miniature electronic devices operate off batteries. Some of them need higher than the standard battery voltages to operate efficiently. If the battery....
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The 7208 seven-stage decimal counter can be used as the frequency counter, it has the latch and multiplexing functions, and it has the direct digital driving circuit and the display driving circuit. 7207IC 6.5536MHZ crystal oscillator`s output frequency is....
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Crystals usually operate at fundamental frequencies up to about 15 MHz. Whenever higher frequencies are required a frequency multiplier is placed after th....
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The following circuit shows about Power Supply For Amplifier Circuit Diagram. Features: Easy to build, supported by an adeguate electric response, make a ....
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This white-LED driver circuit is ideal for use in a garden light. It automatically turns the LED on at night and runs from a single 1. 2V nicad cell which is recharged by a solar cell during the day. The prototype used the existing casing and solar cell from....
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This is a simple single chip metal detector circuit based on IC CS209A from the Cherry Semiconductors. A 100uH coil is used to sense the presence of metal. The IC CS209A has a built in oscillator circuit and the coil L1 forms a part of its external LC....
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The driver stage works in the same manner as the class A output stage described previously. However it is only working at a couple of milliamps, so efficiency is not an issue here. The biasing arrangement should be familiar by now. Some sets, including the....
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How to add an AC-3 RF output to older laser disc players. Finally I was ready to try it myself. Kevin Nakano`s web page (link below) was very helpful. His page describes how to do the modification to a CLD-D702. My CLD-1090 is very similar to the CLD-D702.....
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The Visual Target Tracking System (VTTS) is a system for visually tracking targets using a gimbal mounted camera and digital control circuitry. A small black and white camera is mounted on a stand that can be moved with two directions of freedom. When an....
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2x22 W car audio amplifier circuit uses TDA1558, a monolithic integrated class-B Output power amplifier contains 4x11W single-ended or 2 x 22 W BTL amplifiers..
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7W Mono Audio Amplifier Kit - This small amplifier is constructed around the TDA2003 IC, capable of delivering 7 watts music power into 4 ohms....
The following circuit shows about MC14093B Fluid Level Sensor Circuit Diagram. Features: compact and simple, single-chip circuit, for a wide range ....
This Simple circuit can monitor overflow of water from the Overhead tank. The sensor placed close to the lid of the overhead tank always monitor the presen....
This project is best suited for use as a sensor on a robot. This circuit will actually allow you to measure distances from an object. It measures in a `unit` and it`s range is about 10 inches. As the receiver and transmitter, you will use an ultrasonic....
Simple Burglar Alarm / Door Alarm Circuit Diagram. You can use this Simple project to protect the door or Window. It gives a loud beep and switch on the room light when an intruder attempts to breaks the door lock ..
International Rectifier`s IRAM109-015SD is a multi-chip Hybrid IC developed for low power appliance motor control applications such as Fans, Pumps, refrigerator compressors, etc. The compact Single in line (SIP-S) package minimizes PCB space. Several....
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance`s total power....
A cellular rotary phone - the dialing takes forever! And here in Colorado - on a 10-digit dialing system - you don`t dare mess up the number. Where do you even buy a rotary phone these days Oddly enough, there are quite a few phones on Froogle that had push....
In these times with viruses and other threats from the Internet it would be nice to have reassurance that the PC cannot be infected. That is why this circuit was designed. It makes it possible to install multiple hard disks inside the case of a PC, which are....
3-state sound generator with LM556 . LM556 is a dual timer that can be operated as two LM555. The two timers operate independently of each other sharing only VCC and ground.You can define timing...
This circuit has accouterment for abutting stereo outputs from four altered sources/channels as inputs and alone one of them is selected/connected to the achievement at any one time. When ability accumulation is angry on`, approach A (AR and AL) is selected.....
The beat frequency oscillator (bfo) is necessary when you want to receive cw signals. Cw signals are not modulated with an audio component, you remember, so we must provide one. The action of the rf amplifier, mixer, local oscillator, and IF amplifier is the....
The DZ-2 was built by RCA, Camden NJ, for the U. S. Navy for use in naval aircraft as a Radio Direction Finder. With a contract date of June 30 1939, the receiver is an interesting example of pre-war design. The receiver was powered by the aircraft`s 24v DC....
The principle of the circuit The motorcycle anti-thief alarm circuit is composed of the detection alarm circuit, the charging circuit and the anti-theft control circuit, this circuit is as shown in figure 7-94. The detection alarm circuit is composed of the....
Customs by Ripper - Tech page about basic wiring for any vehicle, but motorcycles in particular....
A split-phase data signal consists of a series of binary digits that occur at a periodic rate, as shown in waveform A in the timing chart. The weight of each...
This is a fun and non-dangeros project for those people who like to throw projectiles magnetically. It simply works by placing a ferromagnetic projectile at one end of a coil and pulsing some power in it. The trick is to switch off power when the projectile....
This is simple transmitter circuit diagram which has some what good coverage. This circuit can be operated with 9-12V power supply. To tune this ....
A tuned radio frequency receiver (TRF receiver) is a radio receiver that is usually composed of several tuned radio frequency amplifiers followed by circuits to detect and amplify the audio signal. A 3 stage TRF receiver includes a RF stage, a detector stage....
A summary of the varactor or varicap diode used in many radio frequency circuits to provide an electronically variable capacitance ..
Here is a very simple, inexpensive and interesting project which provides lot of fun to a home experimenter or hobbyist. This simple transmitter can trans....
Here the simple audio mic pre amplifier circuit based on single IC LM358. The circuit is very simple, inexpensive and easy to built. Component Parts List: R1, R3, R4 = 10K R2 = 1K R5 = 100K-1M Potensiometer C1 = 0. 1uF C2 = 4. 7uF/16V IC1 = LM358 dual op-amp....
DIY Intercom Circuit Intercom Cable Full-duplex Intercom circuit schematic , cable on the way to the intercom circuit....
This is circuit of soft light dimmer. This circuit uses the IGBT STGP10N50A and the TS555 timer as main components. Here is the circuit: The timer is...
RF Cafe visitor David M. wrote to ask that I scan and post this article from the January 1963 edition of Popular Electronics. It is an article written by Philip Hatfield, of the Receiving Tube Department of General Electric that describe a very simple design....
Crystal radios require no outside sources of power to operate, just the radio waves themselves. The first crystal set I built was a "variometer" radio. In this design, one larger coil slides over a smaller coil to change the coil`s inductance, eliminating....
This alarm circuit is an anti- theft wireless alarm can be used with any vehicle having 6- to 12-volt DC supply system. The mini VHF FM radio-controlled, FM transmitter is fitted in the vehicle at night when it is parked in the car porch or car park. The....
This simple circuit protects an SLA battery from over-discharge by disconnecting the load when the terminal voltage drops below a preset level. In operation, a sample of the battery voltage is derived from the 22k © resistor and 20k © trimpot divider. This....
New uTracker on GE865 Small size. New edition of tracker (SIM300DZ, EB-230/LEA-5S). Add OBD-II (ISO) sensor, accelerometer and RFID reader. Add TR24 2.4GHz module except USB link to host. Change all to SPI (free 3 pins to buttons ?) Add u-blox LEA-5S...
This circuit lets you keep the appliances plugged into your inverter. It won`t make the wind blow or the clouds go away, but it will keep your batteries safely charged even if you have a generation shortfall. I call it the Grid Charger Voltage Switch. The....
The mine railway connects the national railways and intermediate links of the mining area, it is the important constituent element of the transport network of the railway. Relevant materials statistics show, the Chinese mine railway exceeds 20, 000....
A circuit that uses one cycle in an alternating current to produce direct current. A Half-Wave rectifier circuit only generates DC from either the positive or negative cycle of the AC input, but not both. Note that the Half-wave Rectifier circuit does not....
Make a basic RF oscillator. The circuit is ridiculously simple, so I will skip all the complicated maths and make component selection simple by using calculators. Let us assume I want an oscillator for 7MHz. The circuit looks like this: The first transistor....
National Semiconductor has been producing and designing ICs for use in switch-mode power supplies for many years. The application of these devices is normally straightforward, helped by the excellent documentation that is available. A typical example of a....
The circuit below uses two quad voltage comparators (LM339) to illuminate a series of 8 LEDs indicating volume level. Each of the 8 comparators is biased at increasing voltages set by the voltage divider so that the lower right LED comes on first when the....
This circuit is 5 channel Equalizer simply cheap (one line chanel). Working principle of this series is a series of frequentiefilter with center frequency of 10...
Industrial grade clear glass sensor modules are widely available but not within the reach of an average electronics hobbyist. The simple clear glass sensor....
Amplifier circuit here is all based on the ic in the gains. Three IC TA7230P, TA7236P, TA7237AP is intregated circuit (IC) which was applied to the power amplifier. Each IC has a different output, different input voltage, all IC TA7230P, TA7236P, TA7237AP is....
One of the best RF amplifiers ever published was Wes Hayward`s post mixer amplifier in the Progressive Communications Receiver. It quickly became known as a great high level RF amplifier. With a standing current of 50ma, it takes a very strong signal to....
The Colpitts Oscillator is characterised by tapping the mid-point of the capacitive side of the oscillator section. The inductor can be the primary side of a speaker transformer. The feedback comes via the inductor....
This little transmitter is suitable for less demanding Doppler propagation measurements. It is designed for use on 80m, but can be easily adapted for 40m or 20m. The output is about 500mW of unmodulated carrier, with a stability of about one part in 106, or....
Laser Command is a game which I build using a 8x8 matrix LED and an Arduino Mini. This game was developed as a "sample" class project in S10-05833 Gadgets, Sensors and Activity Recognition in HCI. The class is taught by Scott Hudson at Carnegie Mellon....
From Figure 1, the host microprocessor (uP) controls the HMC6352 via I2C serial data interface lines for data (SDA) and clock (SCL). Two external 10k-ohm pull-up resistors to the nominal 3 volt DC supply create normally high logic states when the interface....
This document was written with care, but errors cannot be excluded. Neither the company named above nor the seller assumes legal liability for mistakes, resulting operational errors or the consequences thereof. Trademarks, company names and product names may....
This circuit is a modification of High & Low voltage cut-off with delay& alarm circuit appeared in Circuits today, which I have tried and found to be quite reliable. You can adopt this circuit with small modification. Use a transformer with secondary 15 0 15....
This room light controller project automatically using Microcontroller Visitors Counter is a reliable circuit that takes the task of controlling the room...
The EMD SD45 was manufactured starting in 1965 so that it represents one of the newest prototypes available in Large Scale. SD45`s are still running all over the country, but they are getting fewer over time due to very high miles in the last 30 to 35 years.....
This application report presents one possible solution to the telecom plug-in power problem, based on a nominal 48 Vdc system bus and a module needing two low-voltage supply outputs. The material includes a detailed design methodology for tailoring the....
Using the superposition theorem, I need to find the current of all the 3 nodes of the circuit. Using superposition I`ve found that the current from the source: Do you mean i_1 is the current through V1 when the other voltage sources are shorted out, in line....
The schematic diagram come from circuit: 60 Watt Switching Power Supply power supply. Go to that page to read the explanation about above power supply related circuit diagram. The schematic shows the power supply capacity of 70W stereo amplifier Power....
This page provides soft power switch circuits for toggling electronic devices ON and OFF with a momentary button press that controls a latching high-side MOSFET power switch. Several micropower latching switch circuits are provided. Owing to their low....
This project started because I wanted a Li-ion charging circuit with more flexibility than afforded by other do-it-yourself circuits, but at less cost than the programmable computerized chargers. The goal from the beginning was to design, build, test and....
This page describes the installation and use of a Soundtraxx Sierra sound system. The Sierra worked quite well and was reasonably priced, but time marches on. As of September 2008, the Sierra went out of production and was not replaced by an updated stand....
This page features a circuit that has twenty open collector outputs that turn on one at a time in a continuous sequential manner. The circuit make use of the 74LSxx family of TTL integrated logic devices. The circuits are designed to drive light emitting....
With extended periods of bright sunshine and warm weather, even relatively large storage batteries in solar-power systems can become rather warm. Consequently, a circuit is usually connected in parallel with the storage battery to either connect a high-power....
// 555 Timer With On Off Delay Circuit Here is a timer circuit using common IC 555. The circuit is designed to facilitate time adjustment of both...
The intended result is that the relay oscillates and the LEDs flash when the button is pressed, however when I press the button the leftmost LED lights constantly and nothing else happens. I get voltage across the left LED, the resistor and the capacitor,....
Here is the 1963 Mercury V8 Monterey wiring diagram. This is the right side of the wiring diagrams, earlier, we have shown the Mercury V8 Monterey 1963 Wiring Diagram Left Side Part. This wiring diagram is very clear, and it shows a complete components and....
Aim of this project is to present a way to store a large quantity of data into microSD card in files with FAT32 format. Here, ATmega32 is used for data collection and microSD interface. The data is received from in-build 8-channel ADC of ATmega32. One....
Here is a quick guide, which will help you to get started off with kiCAD. In this tutorial we will be considering a simple astable multivibrator circuit using 555 timer IC ..
The design is based loosely on some ideas from K8CU and AG6K. However, I have simplified the circuit somewhat and used different components. The mechanical encapsulation is also different. I used LTspice to verify the tester before building it. The schematic....
A preamplifier operating on a single supply and suitable for use with high impedance type crystal pickups is shown here. The circuit is basically a non-inverting AC amplifier in which the gain is dependent on the feedback resistor R4. The smaller is the R4,....
The MSK4204RH is a radiation hardened complete H-Bridge microcircuit intended for use in DC brushed Motor Control applications or Class D switchmode amplification in space or other severe operating environments. The internal compo- nents have been selected....
This Circuit have output voltage 14 volt with current maximum 4A. Can be use on nicad battery and accu, wet and dry. But the accu must be 12 Volt and have current 4A or higher. The current fillter voltage build of IC CA3140 or LM324. You can which two IC.....
Here`s an another project, which makes an Scrolling LED display. Here 64 leds which are connected to an Matrix display. The Anodes are drived through an Driver...
This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up to about 30KV, depending on the transformer used. It is cheap and easy to make, thanks to the standard TV flyback transformer used. It can power LASERS (although....
The HV739 is a monolithic single channel, high-speed, high voltage, ultrasound transmitter pulser. This integrated, high performance circuit is in a single, 5x5mm, 32-lead QFN package. The HV739 CAN deliver up to a ±3. 0A source and sink current to a....
This is one of mine projects which can be helpful for controlling water level in water tank. I made it on one of Atarado SMART prototyping PCB for which I can tell all the best. Controller for water tank managing water pump and take care of water level. This....
Data Collection - Analog to Digital Conversion and Communicating with a PC through the Serial Port Microcontroller Advanced Kit....
An infrared remote control tester circuit that can be made without spenting much money. This IR tester build around an infrared reciever module TSOP1738. We can observe the remote control state by listening to the buzzer sound. The circuit is very sensitive....
But the idea is to apply this code to other projects with 7 segment displays that I might do later. if you want to learn a bit more of 7 segment displays you can read more at this post I`ve made. ..
Fading a video signal can`t be done simply by attenuating the composite signal, since the synchronization signal may drop below unacceptable level. Here a ...
Here we have an astable oscillator built around 555, which gives an alarm tone of 1. 8 KHz directly driving a speaker. This is basic alarm circuit, which is later used in many other projects in the book. While the circuit shows only 1. 8 KHz operation, it....
If you need more sensitivity, use 74AC04 or 74HC04 instead of 74HCU04 as U1. It may be better than 74HCU04, but the frequency response of 74HC04 may be worse...
Solar/battery powered FSK transmiter regarding power supply section, including battery management. My main goal is to charge battery and supply power to the transmitter over day via solar cells and use battery over night and during low light periods. Since I....
The two circuits illustrate opening a relay contact a short time after the ignition or ligh switch is turned off. The capacitor is charged and the relay is closed when the voltage at the diode anode rises to +12 volts....
A community dedicated to helping everyone learn the art of audio. Projects by fanatics, for fanatics!....
All miniature electronic devices operate off batteries. Some of them need higher than the standard battery voltages to operate efficiently. If the battery....
The 7208 seven-stage decimal counter can be used as the frequency counter, it has the latch and multiplexing functions, and it has the direct digital driving circuit and the display driving circuit. 7207IC 6.5536MHZ crystal oscillator`s output frequency is....
Crystals usually operate at fundamental frequencies up to about 15 MHz. Whenever higher frequencies are required a frequency multiplier is placed after th....
The following circuit shows about Power Supply For Amplifier Circuit Diagram. Features: Easy to build, supported by an adeguate electric response, make a ....
This white-LED driver circuit is ideal for use in a garden light. It automatically turns the LED on at night and runs from a single 1. 2V nicad cell which is recharged by a solar cell during the day. The prototype used the existing casing and solar cell from....
This is a simple single chip metal detector circuit based on IC CS209A from the Cherry Semiconductors. A 100uH coil is used to sense the presence of metal. The IC CS209A has a built in oscillator circuit and the coil L1 forms a part of its external LC....
The driver stage works in the same manner as the class A output stage described previously. However it is only working at a couple of milliamps, so efficiency is not an issue here. The biasing arrangement should be familiar by now. Some sets, including the....
How to add an AC-3 RF output to older laser disc players. Finally I was ready to try it myself. Kevin Nakano`s web page (link below) was very helpful. His page describes how to do the modification to a CLD-D702. My CLD-1090 is very similar to the CLD-D702.....
The Visual Target Tracking System (VTTS) is a system for visually tracking targets using a gimbal mounted camera and digital control circuitry. A small black and white camera is mounted on a stand that can be moved with two directions of freedom. When an....
2x22 W car audio amplifier circuit uses TDA1558, a monolithic integrated class-B Output power amplifier contains 4x11W single-ended or 2 x 22 W BTL amplifiers..
7W Mono Audio Amplifier Kit - This small amplifier is constructed around the TDA2003 IC, capable of delivering 7 watts music power into 4 ohms....
