New Circuits Page 141
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This circuit is useful to detect microwave (gigahertz signal) sources like microwave oven, satellite communication devices, Mobile phones etc. It gives audio visual indications when it detects the Microwaves in the Gigahertz band. Microwave is the form of EM....
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Mains Trigger Musical Door bell using musical ic UM3482 circuit diagram with description of mains trigger musical door bell various and unique doorbell project...
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AVRDude is excellent program for burning hex code into microcontroller. USBasp is awesome USB based programmer for the AVR. In this tutorial we will see how to use AVRdude for burning hex files into AVR microcontroller using USBasp. AVRdude is not readily....
-
MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly easy to take with you; your very own personal sound system` on the move! It`s when you want others to share your taste in music that you ¬nd these players to....
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An NE592 or LM733 is used as a general-purpose video amplifier in this schematic.J2 and J3 provide two anti-phase outputs.R2 is a gain control.The bandwidth is about 100 MHz..
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The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave.....
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MAX732/733 refers to the DC-DC current PWM step-up regulator. As to MAX732, output voltage is +12V, maximum output current is 200mA, output voltage range is +4. 0~+9. 3V. And as to MAX733, the relevant values are +15V, 125mA and 4. 0V~11. V respectively.....
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This design adapts such a high voltage flash for use on a low voltage camera by using an optocoupler to electronically isolate the camera`s contacts from the high voltage. It can then be triggered by the camera using the 6 volt supply from the flash unit`s....
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Both transistors should be low noise types. In the original circuit, I used BC650C which is an ultra low noise device. These transistors are now hard to find but BC549C or BC109C are a good replacement. The circuit is self stabilizing and will set its....
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The basic circuit described in this document is capable of generating up to 30 kilovolts or more from a low voltage DC source using the flyback (LOPT) transformer salvaged from a B/W or color TV or computer monitor. Typical output with a 12 VDC 2 A power....
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As shown in Figure 16-4, a CD4017 is connected as senary counter, and the input clock is 300Hz.VD1 ~ VD9, R1 ~ R3 form the three three-input OR gates, which can respectively get two 50Hz three-phase wave signal with 120 degrees phase difference. A, B, C can....
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With this circuit you can can check that which dot of the circuit is Positive Volt or Negative Volt which. This cheap circuit uses the a little component is will appropriate apply with an automobile or motorcycle. This circuit works during Voltage between....
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This is a 50 Watt Audio power amplifier circuit based single IC STK4036II. Use heatsink to prevent overheating on the IC. The amplifier circuit will give you good quality of sound unexpensive and have low price. It is easy we make a power amplifier using....
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The device presented here can generate a complementary clock signal at frequencies of 10Hz to 10MHz in steps of factor10. Thus, I chose to call it "10xHz clock generator" (with x being a number between 1 and 7). It can also be used to manually create clock....
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The two input boards ( ADCV or digital ) get connected to AD_CTL1, AD_DATA1, AD_SUP5V_1, AD_SUP3V3_1 for the first board and the same names with suffix 2 for the second board. To transfer the sampling data, the 16 digital data lines from the two input boards....
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Monitors battery voltage, Three-LED Display Connecting this circuit to the battery of your vehicle, you will always know at a glance the approximate volta....
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This project has come about from my desire to control my home heating from work. As I have a VPN between work and home a straightforward relay controlled from a PC would seem the easiest solution. However I also wanted a control unit that I could operate in....
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This is a programmable clock timer circuit that uses individual LEDs to indicate hours and minutes. 12 LEDs can be arranged in a circle to represent the 12 hours of a clock face and an additional 12 LEDs can be arranged in an outer circle to indicate 5....
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This is a simplified version of the 4-Digit Keypad Controlled Switch. I have modified the design to reduce the complexity of the circuit - and the number of components required. As a result - the code is somewhat less secure. However, there should be lots of....
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The circuit was designed to create a lamp that incorporates the operation of a touch dimmer using S566B integrated circuit manufactured by Siemens. S566B....
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There are many situations where two or more pieces of equipment are used together and to avoid having to switch each item on separately or risk the possibility of leaving one of them on when switching the rest off, a slave switch is often used. Applications....
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Voltage Limiter Circuit Using Op-amp-Circuit Diagram, Waveform, positive and negative voltage limiters....
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Mousebot from Make vol 2 is a fun introduction to robotics. So fun that I`ve created this expanded documentation of a Mousey build from start to finis....
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An analog-to-digital converter is a device that converts a continuous quantity to a discrete time digital representation. An ADC may also provide an isolated measurement. An analog or analogue signal is any continuous signal for which the time varying....
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Clocks have been mentioned in the preceding section with regard to their action with FFs. You will recall that this circuit is a timing signal generated by the equipment to control operations. This control feature is demonstrated in both the D and J-K FFs.....
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Can someone help me find a schematic and codes about a digital thermometer using a LM35 and 7 segment display(0 - 150.5 degree celcius)..the code must ....
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A low-noise block downconverter (LNB) is a key element in a satellite receiver system and is responsible for converting the relatively high frequency of the received signal into the more convenient L-Band. But how do they work and what do they look like on....
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This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker. Used as a sound effect generator it can be connected to external amplifiers, tape....
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The LED phototransistor light gate should be mounted about 1 to 2cm apart, in some kind of rigid housing. We mounted it on a piece of brass attached to the circuit board. The housing also needs to be able to fit the compass inside, and also not obscure the....
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The circuits in Figure1 and Figure 2 exhibit certain advantages over the circuit shown in the Design Idea in EDN, "Circuit detects first event, " May 3, 2001, pg 89. The n-player first-event-detection circuit offers several improvements: It has fewer passive....
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The circuit given here can be used for tossing head or tail. There are many games in which a tossing is required to start and this circuit can be used in all such instances. The circuit uses two ICs NE 555 timer (IC1) and 74LS76 dual JK flip flop (IC2). The....
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This circuit is based on a very old application note from exar, in this the frequency is fixed by IC1 and IC2 -P1 controls the duty cycle. you need to compute the R and C values to get what you need, LM555 data sheet. You have to study the circuit and do....
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This page provided to the domain owner free by Sedo`s Domain Parking. Disclaimer: Domain owner and Sedo maintain no relationship with third party advertisers. Reference to any specific service or trade mark is not controlled by Sedo or domain owner and does....
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This circuit generates 3 source regulated voltages applying a minimum of electronic parts. The output DC voltage are +12V ; +5V and -5V. Diodes D2 and D3 conduct full-wave rectification, at the same time charging capacitor C2 on each halves of the....
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This is VERY illegal. As a consumer, you MUST comply with part 15 of the rules and regulations. Part 15 states that your device must accept any interference received, and it cannot cause any harmful interference. (Such as jamming an FM signal. ) It is even....
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The antenna used for either receiving or transmitting is a vital element in the communication link. In most cases the antenna has a great deal to do with how well the receiver or transmitter works. Antennas are reciprocal, meaning that an antenna designed....
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The receiver ( Figure a) input circuit is supplied by the 60? generator. Low -pass filter allows the entire frequency range with uniform sensitivity. Figure b shows the receiver input circuit coupled with transmitter inductive (Ri = 60?). Figure c shows the....
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This solar tracker circuit is an open source circuit and anyone may edit the circuit to his/her own preference. Watch the video for other useful information regarding features the solar tracker does and does not include that you may have to implement yourself...
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This classic tube amplifier used to be the best value on the block. Fifteen years ago you could buy one of these for $25. This amp was designed to be inexpensive and to get maximum performance for dollar paid. At the end of it`s sale it sold for about $100....
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The first resistor on the left in the schematic says 68k. This will vary depending the the microphone. In our case we used a microphone from digikey with a 1. 5k output impedance, so we matched it with a 1. 5k resistor instead of using a 68k...
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The circuit schematic is straightforward, I`ll not try to give information about assembling and testing circuits, there should be lots of instructable....
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Diagram below shows you with a classic test fixture that has been used for long periods in order to give anyone for resolving the non-linearity errors for...
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A VU-meter is a very common instrument usually installed on audio Hi-Fi amplifiers and is used to show the instantaneous power provided to the speakers. It is usually connected at the output of the amplifier, in parallel with the speaker. The term "VU"....
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This is a 28VDC to 5VDC switching converter circuit. As a switch-mode voltage regulator, this circuit gives higher efficiency than linear regulator type....
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An analog input is a measurable electrical signal with a defined range that is generated by a sensor and received by a controller. The analog input changes continuously in a definable manner in relation to the measured property. The analog signals generated....
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This article describes the DDDAC 2000 Audiophile projects (1N4001). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy....
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How to take the triangle wave waveform and bend it into a sine wave. To help adjust its transfer function, resistors R32 and R33 are added. Increasing or decreasing these resistors causes the response to be more or less linear. How do we take our....
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CMOS analog multiplexers were frequently used at the ETC for various purposes. Here I thought I would present a circuit I borrowed from a Dave Jones design, and slightly modified it, to build a black burst generator. Video systems need sync to ensure that....
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Before its move offshore, I was lucky enough to be involved in developing the avionics system for the Flightship Ground Effect FS8 craft....
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Wiring 2-Wire Intercom. According to Wikipedia, an intercom is a stand-alone electronic communications system intended for limited or private dialogue....
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This digital DIY tachometer for bikes uses two reed switches to get the speed information of the bicycle. The reed switches are installed near the rim of the wheel where permanent magnets pass by. The permanent magnets are attached to the wheelspokes and....
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Experimenting with a vacuum tube VCO similar to the one in the link below, but with a few modifications to accommodate the parts I had on hand; I`m using a cascode arrangement instead of the 6AU6 and a 2D21 thyratron in lieu of the 5696. The circuit really....
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The following schematic diagram shows the 12 Volt Car Lamp Dimmer Circuit Design using 555 Timer. This circuit design can be used to dim a standard 25 watt....
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The EN line is called `Enable`. This control line is used to tell the LCD that you are sending it data. To send the data to the LCD, your program should make sure this line is low (0) and then set the other two control lines and/or put data on the data bus.....
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The OPT301 is in a TO-99 8 lead package and has good sensitivity but a reduced bandwidth of 4kHz. The peak response is just into the Infra Red region at 750nm but its sensitivity in the visible red spectrum at 670nm is only a few percent down. The circuit is....
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This is Micro inverter or The inverter very small-sized, perform modify from the energy battery the small-sized , have the value voltage about 220V AC Volt...
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It can be used as part of intercoms, walkie-talkies, low-power transmitters, and packet radio receivers. Transistors T1 and T2 form the mic preamplifier. Resistor R1 provi..
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Welcome folks, today I want post interesting topic about switching power supply circuit diagram for you who want to learn more you can search....
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A small Tesla Coil (12" range), Jacobs Ladder or a "Antigravity Project" from the book `Electronic Gadgets for the Evil Genius`, but I am having a very hard time locating part for these projects. It is a nice book but there project cost estimate is way of....
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-
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The charger in this project is designed to charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1. 5 hours, 1500mAh NiMHs in about 3. 5 hours, and 2500mAh NiMHs in about 5. 5....
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This is a power supply circuit that produce voltage 12 to 24 V. It is very simple, doesn`t need regulator just bridge rectifier, filter capacitor and transformer. A bridge rectifier makes use of four diodes in a bridge arrangement to achieve full-wave....
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Learn how to build h-bridges from many on- and off-line resources. After all these circuits are not terribly complicated. Some of those resources are good, some are not so much. However when I`ve started working with them, I`ve realized that many of my....
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An article describing how I built a small solar panel from scratch....
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The circuit was designed to create a modular Class A buffer preamplifier in order to isolate stages in an audio circuit. BF245 a general purpose N-Chann....
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XinuPhone promotes hands-on interactive learning that is both cross-discipline and application oriented. As a research tool, XinuPhone is a versatile and open-source platform useful for benchmarking experimental methods against industry standards.....
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The electronic circuit described below can switch the clock signal of a Z80 CPU between 2 different sources. This can be used to make a turbo circuit in a Z80-based system. It was originally designed for use in MSX computers, but is probably suited for use....
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The AD592 is a two terminal monolithic integrated circuit temperature transducer that provides an output current proportional to absolute temperature. For a wide range of supply voltages the transducer acts as a high impedance temperature dependent current....
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This solid-state push-pull single-ended Class A circuit is capable of providing a sound comparable to those valve amplifiers, delivering more output power (6. 9W measured across a 8 Ohm loudspeaker cabinet load), less THD, higher input sensitivity and better....
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As the figure 17-1 showns, the camera flash delay circuit can be used to capture the high-speed scene, and you can get a very short exposure time. The light door is composed of the luminous diode and the 3DU type photosensitive tube. When the light is....
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With the amount of equipment in home entertainment facilities today the need to be able to fluctuate the gain of the audio and also video signal is needed. I observed this specific circuit very helpful while used in conjunction with the General Descrambler....
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The second-order multipurpose filter described here can perform as a low-pass, bandpass, high-pass, or notch filter at audio frequencies. What makes this filter unique is that all of its characteristics can be varied independently with potentiometers. In....
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C1 and C2 with a speed controller works by receiving the voltage at the gate of the MOSFET when the voltage on C turn ON the other would be to drive MOSFET operation...
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8051SBC USB & GLCD Expansion Board, Electronic Circuit Schematic Wiring Diagram, 8051SBC USB & GLCD Expansion Board...
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Because small, precision high, high sensitivity and definition higher advantage with low price of having size of SAW sensor, so has produced SAW gas sensor composed of surface acoustic wave device, sensitive membrane and relevant detection circuit. The....
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This is a classic divider of frequency via two. It is achieved with a classic circuit T-flipFlop, round IC1 [ 4011 ]. In the circuit, the frequency of network, after are limit the negative half-s period of sine wave and transform in square wave, are divided....
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PWM is a highly efficient control scheme used to manipulate the flow of power through various electronic devices. I have seen it most commonly used in switched-mode power supplies, LED dimming circuits, and variable speed motor controls, but there are....
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7 segment display driver circuit based on 7446. seven segment display system, 7 segment decoder/ driver . Sinking and sourcing 7 segment display driver...
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The circuit shown in the following schematic diagram is a simple spectrum analyzer adapter circuit for oscilloscopes. This circuit can be used for scanning or....
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This is the schematic diagram of Electro-Harmonix Small Stone Phaser guitar effect pedal. The Small Stone is somewhat special in applying Operational Transconductance Amplifiers (OTA s) for phase shift stages rather of opamps with variabl....
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Quick Key Adapter, 10 Button HID Keyboard This Instructable covers creating a USB connected Human Interface Device Keyboard that has 10 button inputs which....
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This Class E RF amplifier will deliver up to 400 watts of RF output, depending on the input voltage and tuning parameters (current). The amplifier uses inexpensive IXDD414 Driver ICs - one for every 2 MOSFETs. Transient Voltage Supressors (TVS devices) are....
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Which type of modulated light receiver should one use A photodiode straight into a high gain, high impedance amplifier A photodiode into a current amplifier A back-biased photodiode FET input or bipolar IC or discrete How does one minimise noise while....
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The SSY-1 is a small pulsed Nd YAG laser originally used as part of the laser rangefinder in the M1 Abrams tank. The laser head and PFN-1 pulse forming network (flashlamp capacitor, inductor and diode) are readily available for under $250 as surplus on eBay....
This circuit is useful to detect microwave (gigahertz signal) sources like microwave oven, satellite communication devices, Mobile phones etc. It gives audio visual indications when it detects the Microwaves in the Gigahertz band. Microwave is the form of EM....
Mains Trigger Musical Door bell using musical ic UM3482 circuit diagram with description of mains trigger musical door bell various and unique doorbell project...
AVRDude is excellent program for burning hex code into microcontroller. USBasp is awesome USB based programmer for the AVR. In this tutorial we will see how to use AVRdude for burning hex files into AVR microcontroller using USBasp. AVRdude is not readily....
MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly easy to take with you; your very own personal sound system` on the move! It`s when you want others to share your taste in music that you ¬nd these players to....
An NE592 or LM733 is used as a general-purpose video amplifier in this schematic.J2 and J3 provide two anti-phase outputs.R2 is a gain control.The bandwidth is about 100 MHz..
The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave.....
MAX732/733 refers to the DC-DC current PWM step-up regulator. As to MAX732, output voltage is +12V, maximum output current is 200mA, output voltage range is +4. 0~+9. 3V. And as to MAX733, the relevant values are +15V, 125mA and 4. 0V~11. V respectively.....
This design adapts such a high voltage flash for use on a low voltage camera by using an optocoupler to electronically isolate the camera`s contacts from the high voltage. It can then be triggered by the camera using the 6 volt supply from the flash unit`s....
Both transistors should be low noise types. In the original circuit, I used BC650C which is an ultra low noise device. These transistors are now hard to find but BC549C or BC109C are a good replacement. The circuit is self stabilizing and will set its....
The basic circuit described in this document is capable of generating up to 30 kilovolts or more from a low voltage DC source using the flyback (LOPT) transformer salvaged from a B/W or color TV or computer monitor. Typical output with a 12 VDC 2 A power....
As shown in Figure 16-4, a CD4017 is connected as senary counter, and the input clock is 300Hz.VD1 ~ VD9, R1 ~ R3 form the three three-input OR gates, which can respectively get two 50Hz three-phase wave signal with 120 degrees phase difference. A, B, C can....
With this circuit you can can check that which dot of the circuit is Positive Volt or Negative Volt which. This cheap circuit uses the a little component is will appropriate apply with an automobile or motorcycle. This circuit works during Voltage between....
This is a 50 Watt Audio power amplifier circuit based single IC STK4036II. Use heatsink to prevent overheating on the IC. The amplifier circuit will give you good quality of sound unexpensive and have low price. It is easy we make a power amplifier using....
The device presented here can generate a complementary clock signal at frequencies of 10Hz to 10MHz in steps of factor10. Thus, I chose to call it "10xHz clock generator" (with x being a number between 1 and 7). It can also be used to manually create clock....
The two input boards ( ADCV or digital ) get connected to AD_CTL1, AD_DATA1, AD_SUP5V_1, AD_SUP3V3_1 for the first board and the same names with suffix 2 for the second board. To transfer the sampling data, the 16 digital data lines from the two input boards....
Monitors battery voltage, Three-LED Display Connecting this circuit to the battery of your vehicle, you will always know at a glance the approximate volta....
This project has come about from my desire to control my home heating from work. As I have a VPN between work and home a straightforward relay controlled from a PC would seem the easiest solution. However I also wanted a control unit that I could operate in....
This is a programmable clock timer circuit that uses individual LEDs to indicate hours and minutes. 12 LEDs can be arranged in a circle to represent the 12 hours of a clock face and an additional 12 LEDs can be arranged in an outer circle to indicate 5....
This is a simplified version of the 4-Digit Keypad Controlled Switch. I have modified the design to reduce the complexity of the circuit - and the number of components required. As a result - the code is somewhat less secure. However, there should be lots of....
The circuit was designed to create a lamp that incorporates the operation of a touch dimmer using S566B integrated circuit manufactured by Siemens. S566B....
There are many situations where two or more pieces of equipment are used together and to avoid having to switch each item on separately or risk the possibility of leaving one of them on when switching the rest off, a slave switch is often used. Applications....
Voltage Limiter Circuit Using Op-amp-Circuit Diagram, Waveform, positive and negative voltage limiters....
Mousebot from Make vol 2 is a fun introduction to robotics. So fun that I`ve created this expanded documentation of a Mousey build from start to finis....
An analog-to-digital converter is a device that converts a continuous quantity to a discrete time digital representation. An ADC may also provide an isolated measurement. An analog or analogue signal is any continuous signal for which the time varying....
Clocks have been mentioned in the preceding section with regard to their action with FFs. You will recall that this circuit is a timing signal generated by the equipment to control operations. This control feature is demonstrated in both the D and J-K FFs.....
Can someone help me find a schematic and codes about a digital thermometer using a LM35 and 7 segment display(0 - 150.5 degree celcius)..the code must ....
A low-noise block downconverter (LNB) is a key element in a satellite receiver system and is responsible for converting the relatively high frequency of the received signal into the more convenient L-Band. But how do they work and what do they look like on....
This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker. Used as a sound effect generator it can be connected to external amplifiers, tape....
The LED phototransistor light gate should be mounted about 1 to 2cm apart, in some kind of rigid housing. We mounted it on a piece of brass attached to the circuit board. The housing also needs to be able to fit the compass inside, and also not obscure the....
The circuits in Figure1 and Figure 2 exhibit certain advantages over the circuit shown in the Design Idea in EDN, "Circuit detects first event, " May 3, 2001, pg 89. The n-player first-event-detection circuit offers several improvements: It has fewer passive....
The circuit given here can be used for tossing head or tail. There are many games in which a tossing is required to start and this circuit can be used in all such instances. The circuit uses two ICs NE 555 timer (IC1) and 74LS76 dual JK flip flop (IC2). The....
This circuit is based on a very old application note from exar, in this the frequency is fixed by IC1 and IC2 -P1 controls the duty cycle. you need to compute the R and C values to get what you need, LM555 data sheet. You have to study the circuit and do....
This page provided to the domain owner free by Sedo`s Domain Parking. Disclaimer: Domain owner and Sedo maintain no relationship with third party advertisers. Reference to any specific service or trade mark is not controlled by Sedo or domain owner and does....
This circuit generates 3 source regulated voltages applying a minimum of electronic parts. The output DC voltage are +12V ; +5V and -5V. Diodes D2 and D3 conduct full-wave rectification, at the same time charging capacitor C2 on each halves of the....
This is VERY illegal. As a consumer, you MUST comply with part 15 of the rules and regulations. Part 15 states that your device must accept any interference received, and it cannot cause any harmful interference. (Such as jamming an FM signal. ) It is even....
The antenna used for either receiving or transmitting is a vital element in the communication link. In most cases the antenna has a great deal to do with how well the receiver or transmitter works. Antennas are reciprocal, meaning that an antenna designed....
The receiver ( Figure a) input circuit is supplied by the 60? generator. Low -pass filter allows the entire frequency range with uniform sensitivity. Figure b shows the receiver input circuit coupled with transmitter inductive (Ri = 60?). Figure c shows the....
This solar tracker circuit is an open source circuit and anyone may edit the circuit to his/her own preference. Watch the video for other useful information regarding features the solar tracker does and does not include that you may have to implement yourself...
This classic tube amplifier used to be the best value on the block. Fifteen years ago you could buy one of these for $25. This amp was designed to be inexpensive and to get maximum performance for dollar paid. At the end of it`s sale it sold for about $100....
The first resistor on the left in the schematic says 68k. This will vary depending the the microphone. In our case we used a microphone from digikey with a 1. 5k output impedance, so we matched it with a 1. 5k resistor instead of using a 68k...
The circuit schematic is straightforward, I`ll not try to give information about assembling and testing circuits, there should be lots of instructable....
Diagram below shows you with a classic test fixture that has been used for long periods in order to give anyone for resolving the non-linearity errors for...
A VU-meter is a very common instrument usually installed on audio Hi-Fi amplifiers and is used to show the instantaneous power provided to the speakers. It is usually connected at the output of the amplifier, in parallel with the speaker. The term "VU"....
This is a 28VDC to 5VDC switching converter circuit. As a switch-mode voltage regulator, this circuit gives higher efficiency than linear regulator type....
An analog input is a measurable electrical signal with a defined range that is generated by a sensor and received by a controller. The analog input changes continuously in a definable manner in relation to the measured property. The analog signals generated....
This article describes the DDDAC 2000 Audiophile projects (1N4001). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy....
How to take the triangle wave waveform and bend it into a sine wave. To help adjust its transfer function, resistors R32 and R33 are added. Increasing or decreasing these resistors causes the response to be more or less linear. How do we take our....
CMOS analog multiplexers were frequently used at the ETC for various purposes. Here I thought I would present a circuit I borrowed from a Dave Jones design, and slightly modified it, to build a black burst generator. Video systems need sync to ensure that....
Before its move offshore, I was lucky enough to be involved in developing the avionics system for the Flightship Ground Effect FS8 craft....
Wiring 2-Wire Intercom. According to Wikipedia, an intercom is a stand-alone electronic communications system intended for limited or private dialogue....
This digital DIY tachometer for bikes uses two reed switches to get the speed information of the bicycle. The reed switches are installed near the rim of the wheel where permanent magnets pass by. The permanent magnets are attached to the wheelspokes and....
Experimenting with a vacuum tube VCO similar to the one in the link below, but with a few modifications to accommodate the parts I had on hand; I`m using a cascode arrangement instead of the 6AU6 and a 2D21 thyratron in lieu of the 5696. The circuit really....
The following schematic diagram shows the 12 Volt Car Lamp Dimmer Circuit Design using 555 Timer. This circuit design can be used to dim a standard 25 watt....
The EN line is called `Enable`. This control line is used to tell the LCD that you are sending it data. To send the data to the LCD, your program should make sure this line is low (0) and then set the other two control lines and/or put data on the data bus.....
The OPT301 is in a TO-99 8 lead package and has good sensitivity but a reduced bandwidth of 4kHz. The peak response is just into the Infra Red region at 750nm but its sensitivity in the visible red spectrum at 670nm is only a few percent down. The circuit is....
This is Micro inverter or The inverter very small-sized, perform modify from the energy battery the small-sized , have the value voltage about 220V AC Volt...
It can be used as part of intercoms, walkie-talkies, low-power transmitters, and packet radio receivers. Transistors T1 and T2 form the mic preamplifier. Resistor R1 provi..
Welcome folks, today I want post interesting topic about switching power supply circuit diagram for you who want to learn more you can search....
A small Tesla Coil (12" range), Jacobs Ladder or a "Antigravity Project" from the book `Electronic Gadgets for the Evil Genius`, but I am having a very hard time locating part for these projects. It is a nice book but there project cost estimate is way of....
The charger in this project is designed to charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1. 5 hours, 1500mAh NiMHs in about 3. 5 hours, and 2500mAh NiMHs in about 5. 5....
This is a power supply circuit that produce voltage 12 to 24 V. It is very simple, doesn`t need regulator just bridge rectifier, filter capacitor and transformer. A bridge rectifier makes use of four diodes in a bridge arrangement to achieve full-wave....
Learn how to build h-bridges from many on- and off-line resources. After all these circuits are not terribly complicated. Some of those resources are good, some are not so much. However when I`ve started working with them, I`ve realized that many of my....
The circuit was designed to create a modular Class A buffer preamplifier in order to isolate stages in an audio circuit. BF245 a general purpose N-Chann....
XinuPhone promotes hands-on interactive learning that is both cross-discipline and application oriented. As a research tool, XinuPhone is a versatile and open-source platform useful for benchmarking experimental methods against industry standards.....
The electronic circuit described below can switch the clock signal of a Z80 CPU between 2 different sources. This can be used to make a turbo circuit in a Z80-based system. It was originally designed for use in MSX computers, but is probably suited for use....
The AD592 is a two terminal monolithic integrated circuit temperature transducer that provides an output current proportional to absolute temperature. For a wide range of supply voltages the transducer acts as a high impedance temperature dependent current....
This solid-state push-pull single-ended Class A circuit is capable of providing a sound comparable to those valve amplifiers, delivering more output power (6. 9W measured across a 8 Ohm loudspeaker cabinet load), less THD, higher input sensitivity and better....
As the figure 17-1 showns, the camera flash delay circuit can be used to capture the high-speed scene, and you can get a very short exposure time. The light door is composed of the luminous diode and the 3DU type photosensitive tube. When the light is....
With the amount of equipment in home entertainment facilities today the need to be able to fluctuate the gain of the audio and also video signal is needed. I observed this specific circuit very helpful while used in conjunction with the General Descrambler....
The second-order multipurpose filter described here can perform as a low-pass, bandpass, high-pass, or notch filter at audio frequencies. What makes this filter unique is that all of its characteristics can be varied independently with potentiometers. In....
C1 and C2 with a speed controller works by receiving the voltage at the gate of the MOSFET when the voltage on C turn ON the other would be to drive MOSFET operation...
8051SBC USB & GLCD Expansion Board, Electronic Circuit Schematic Wiring Diagram, 8051SBC USB & GLCD Expansion Board...
Because small, precision high, high sensitivity and definition higher advantage with low price of having size of SAW sensor, so has produced SAW gas sensor composed of surface acoustic wave device, sensitive membrane and relevant detection circuit. The....
This is a classic divider of frequency via two. It is achieved with a classic circuit T-flipFlop, round IC1 [ 4011 ]. In the circuit, the frequency of network, after are limit the negative half-s period of sine wave and transform in square wave, are divided....
PWM is a highly efficient control scheme used to manipulate the flow of power through various electronic devices. I have seen it most commonly used in switched-mode power supplies, LED dimming circuits, and variable speed motor controls, but there are....
7 segment display driver circuit based on 7446. seven segment display system, 7 segment decoder/ driver . Sinking and sourcing 7 segment display driver...
The circuit shown in the following schematic diagram is a simple spectrum analyzer adapter circuit for oscilloscopes. This circuit can be used for scanning or....
This is the schematic diagram of Electro-Harmonix Small Stone Phaser guitar effect pedal. The Small Stone is somewhat special in applying Operational Transconductance Amplifiers (OTA s) for phase shift stages rather of opamps with variabl....
Quick Key Adapter, 10 Button HID Keyboard This Instructable covers creating a USB connected Human Interface Device Keyboard that has 10 button inputs which....
This Class E RF amplifier will deliver up to 400 watts of RF output, depending on the input voltage and tuning parameters (current). The amplifier uses inexpensive IXDD414 Driver ICs - one for every 2 MOSFETs. Transient Voltage Supressors (TVS devices) are....
Which type of modulated light receiver should one use A photodiode straight into a high gain, high impedance amplifier A photodiode into a current amplifier A back-biased photodiode FET input or bipolar IC or discrete How does one minimise noise while....
The SSY-1 is a small pulsed Nd YAG laser originally used as part of the laser rangefinder in the M1 Abrams tank. The laser head and PFN-1 pulse forming network (flashlamp capacitor, inductor and diode) are readily available for under $250 as surplus on eBay....
