New Circuits Page 109
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The electronic circuit is a TV modulator that is really no more than a transmitter. It is a very small transmitter, admittedly, but none the less that is what it is. What does a modulator actually do In general -and this design is no exception to the rule -....
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RF power amplifier circuit of this work is based on the transistor 2SC1970 and 2N4427. The set output power of 88-108 MHz FM RF Amplifier With 2SC1970 is about 1. 3W and the input driver is 30-50mW. RF driver amplifier circuit uses a 2N4427 and its power....
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With the easy availability of inexpensive digital multimeters, and integrated circuit temperature sensors, it is now very easy to build a sensitive and accurate digital thermometer that can be used for many experiments around the house or in the amateur....
-
This evening as I came home from a paragliding appointment, I had a feeling that I must improve my yesterday-written RGB LED driver code. So I cleaned it up a bit, and wrote a lot of comments to make it more useful for educational purposes. I`m alredy over....
-
The following circuit shows about PIR Sensor Timer Circuit Diagram. Features: simple circuit, more accurately, efficient. Component: Diode, ....
-
This is a very simple liquid detector that use a relay to open an evacuation van. You can use it for water or any liquid that conduct electricity. Use any...
-
-
The ATR0981 is a monolithic IC manufactured using Atmels advanced SiGe technol ogy. The IC performs a transmit and receive front-end function, dedicated for a frequency range of 300 MHz to 500 MHz. It consists of a Low-Noise Amplifier (LNA) and a Power....
-
The red laser line slowly sweeps the object (here a Fabuland lamb head). Behind the scanned object, two planes with a 90 ° angle provide reference to the scanning software. They are also marked with regularly spaced black dots that serve during the....
-
-
The IR photo transistor Q1 (Radio Shack 276-145A) or similar is connected to the set input (pin 6). The photo transistor should be shielded from direct light so that the voltage at the set input (pin 6) is less than 1 volt under ambient conditions and moves....
-
Emphasis on the high bands (902 thru 10 GHz) had been a priority here at ARS KMGT for the last few years. The low bands were in pretty good shape, so not much other than standard maintenance was needed there. However, improvements to the microwave station....
-
-
This circuit shows how a 4017 CMOS decade counter can be used to build a timer circuit. Push-button S1 will discharge capacitor C1 through resistor R2. When S1 is released, C1 will charge up through R1 causing a rising edge at the clock input of IC1. This....
-
The following mains operated LED flasher circuit which is actually an astable multivibrator circuit utilizes only a diac and resistor arrangement for implementing interesting wig wag flashing of two LEDs. The circuit was shared with me by Mr. Vineesh, who is....
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-
-
This circuit came from a 14 Watt Commercial Electric spiral bulb from Home Depot. In fact, I drew it in that way because it was layed out very well, so much credit should go to Sam Goldwasser. It is a rather interesting oscillator circuit which I will....
-
The tuned coil L1, has two output tapping for the antenna connection, marked "A" and "B". These are both low-level outputs and you choose which tapping you want to use ( stable low range, or more unstable but higher range). Tap B (2. 5%) takes just a very....
-
-
-
Arduino sketch and other useful information about driving a brushless DC motor, such as DVD drive spindle motor, using Arduino or another MCU..
-
-
TDA 2030 is produced by SGS Ates and is a complete audio amplifier. Class AB amplifier to deliver final cand 14 watts into 4 ohms, a source of +-14V power. Connecting two TDA2030 through cheap power transistors that can create an amplifier that can deliver a....
-
Although a distribution amplifier may accept different input channels and output those to particular outputs. The term is meant to describe something that outputs the same signal to some number of outputs,based on one input. The outputs are identical, and....
-
-
This timer circuit is similar to the 5 to 30 minute timer except that when switch S1 is closed, the on/off actionof the circuit will continue indefinitely until S1 is opened again. A 7555 time and low leakage type capacitor for C1must be used. The 6 way....
-
This circuit was designed to produce an audible alarm when the mains power is interrupted. Such an alarm is essential for anyone whose livelihood depends....
-
-
It is using the IC-type multi-vibrator for the oscillator of the alternating current. The frequency is about 60 Hz. I used 7400 as the IC for the oscillator but 7404 is OK. The signal of the oscillator has the switching operation with TR1-TR4. TR2 and TR4....
-
The adjustment control for the contrast of an LC-Display is typically a 10-k potentiometer. This works fine, provided that the power supply voltage is constant. If this is not the case (for example, with a battery power supply) then the potentiometer has to....
-
The Micromag3 is a 3-axis magnetometer that measures the strength of magnetic fields in 3 directions. It can measure magnetic fields that are approximately the same strength as the Earth`s magnetic field. Common applications include orientation sensing and....
-
-
Laboratory power supply is characterized by its wide adjustable voltage range and its robustness. Continuous voltage adjustment is necessary, as well as current limiter for safety and robustness. You can build suitable one using LM10 op-amp and voltage....
-
-
-
The TPA2011D1 is a 3. 2-W high efficiency filter-free class-D Audio Power Amplifier (class-D amp) in a 1, 21 mm G— 1, 16 mm wafer chip scale package (WCSP) that requires only three external components. The TPA2011D1 is a 3. 2-W high efficiency filter-free....
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In the production of LCD projector, the main factors of the threatening life of LCD screen is the temperature of halogen. The multi-function controller made by this circuit is very effective for the protection of liquid crystal projector. The LCD projector....
-
The chip in the middle with the tiny bullet holes in it is almost certainly proprietary. At best you can salvage a few parts if your time is worth nothing, but you don`t need to know the circuit for that. Olin Lathrop Apr 9 `13 at 14:24 Just to make sure:....
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This rotative speed regulator circuit schematic allows to control the holing speed of your borer or driller machine. This project is based on the fact tha....
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IC1 forms a differential amplifier for the electromagnetic pulses generated by the engine sparking-plugs, picked-up by sensor coil L1. IC2A further amplifies the pulses and IC2B to IC2F inverters provide clean pulse squaring. The monostable multivibrator....
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This one is V3. 0, for TII use, stock FC ignition, 24-2 style modified CAS, and 3-bar MAP sensor. It tests fine on the stim, so I`m hoping all is well. I`ll power up my test bench later, and test with an actual 24-2 style CAS just to be sure. All wiring is....
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A keyboard key figure who work with electrical contact between the surface of the keyboard and the underlying circuit when pressed keytop area, used by some home computers the early 1980s, and has been widely used in consumer electronic devices...
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-
L1 and L2 were made by wrapping three tight side by side loops around a sharpie marker, I also made L2 by wrapping about 8 inches of 35AWG magnet wire around a ferrite core, careful to make the windings side by side and glued it in place with a hot glue gun,....
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-
I`m trying to use a 74LS259 8 bit addressable latch. I`m trying to get it working without a micro-controller first to ensure that I understanding the wiring 100%...
-
-
The following circuit shows about LM4652 IC For 170 Watt Power Amplifier Circuit. Features:?used in portable HiFi systems such as power ....
-
-
The TC4422 chip is in place of the BD140/BD139 totem pole. Unfortunately I do not have a multisim model for this chip so I can add it to the circuit....
-
This is the diagram od electro-harmonix graphic equalizer. You can specify the number of channels according to your needs. You just need to parallel the components: C1, C2, R1, an om-amp, Potensiometer and a 470 ohm resistor. The frequency to be boost....
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This article lists various types of audio amplifier circuits using Mosfet. We have tested all these circuits in our lab and we found all of them performing satisfactorily. The amplifier employs only one transistor and two MOSFETs and few resistors and....
-
-
This circuit shows about LM2576T IC Step-Down Switching Power Supply Circuit Diagram. Features:60V input voltage, 3.3 V/5V/12V/15V output ....
-
Moisture deposited on a surface bridges across a grid of wires or circuit board traces. A circuit measures the AC ohms resistance through the grid. - Warm wet weather promotes fungus and insect pests of plants. - Quick detection of rain can be used in....
-
The Fender Bassmanis a legendary guitar amp known to both guitar and bass players. It wasintroduced in 1951, primarilytargeted for bass guitar players andpromoted asa bass ampfor the Fender Precision Bass guitar, the first mass-produced electric bass guitar....
-
The Testatika design based on the Pidgeon/Wimshurst machine is of course only one type of electrostatic generator to build this system around. Since the early 1900s such power generators have come a long way in sophistication - and in power output - recently....
-
Telephone Tone Ringer TA31001 The UTC TA31001 is a bipolar integrated circuit designed for telephone bell replacement. It CAN also be used as alarms or other alerting devices. By LianShun Electronics Co. , Ltd ..
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The HV732 is a complete, high-speed, high voltage ultra- sound transmitter pulser. This high performance CMOS in- tegrated circuit (IC) is in a single 7x7x0. 9mm 44-lead, multi- die, QFN package. The HV732 CAN deliver up to a ±2A source and sink cur- rent to....
-
The oscillator circuit uses a center-tapped transistor output transformer to serve as a load for the collector of Q1, supply a feedback signal for the base, and serve as the output winding for driving the speaker. R1 supplies dc bias and C1 completes the ac....
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-
This circuit bellow shows an electrical circuit apply for Audi A4 Quattro 2004 model years. Component: Transmission, Anti-lock Brakes Circuit ....
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This flashing brake light circuit can be used for motorcycles. When brake-light switch S1 is closed, power is applied to U1 and U2. Two inverters of U2, a....
-
A simple 6 volt dc regulator circuit with diagram and schematic using 7806 Ic, a positive voltage regulator.Its an elementary 6 volt,1 ampere power supply circuit....
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This is an article about my new PCB design for CMoy headphone amplifier. Main feature is that the new PCB fits exactly to the classic Altoids tin-can. This new CMoy incorporates moreover bass-boost circuit and constant current charger for 9V battery. P1 is....
-
The chart shows the Wien bridge sine wave oscillator circuit. The amount of negative feedback circuit is determined by the internal resistance of FET. When the peak value of oscillator output reaches the regulated voltage of regulator diode D1, Q2 turns on,....
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This article is the result of the very positive feedback on the hardware articles that I have written so far. You LinuxFocus readers are really a great audience! Some of you wanted to know how to interface the USB bus. So here is a nice solution. We use the....
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In this article we show that enhancement mode GaN transistors enable significant efficiency improvements in resonant topologies and demonstrate a practical example of a wireless power transmission....
-
Microchip Technology`s MCP73113, MCP73114 and MCP73213 Lithium-Ion (Li-Ion); and MCP73123, MCP73223 Lithium Iron Phosphate (LiFePO4) Chargers feature Overvoltage Protection (OVP), which prevents overheating and damage to the battery-charger circuit from....
-
Mark builds and tests the DIY Moving Magnet (MM) Phono Preamplifier Kit that was featured in Silicon Chip Magazine, August 2006. The kit comes complete with everything you need except for an enclosure and a power supply (AC walwart). ...
-
The indicator described here is specifically designed for adjusting the dynamic limiter described elsewhere in this edition and checking whether the maximum level of the reference voltage (P1) needs to be modified. Her e we use a 4 -to -16 decoder IC (type....
-
A very simple circuit for FM receiver, no IC required, and only a single transistor. I`m not sure whether this transistor works or not, I`m going to try this out. Have you guys seen this before It is a regenerative or super-regenerative simple radio....
-
Some 15 years ago it was common to see small key-holders emitting an intermittent beep for a couple of seconds after its owner whistled. These devices contained a special purpose IC and therefore were not suited to home construction. The present circuit is....
-
This circuit is the sound generator super siren, for use be alarm signal get by live frequency generator circuit that use, op-amp circuit. The principle works to are while still no press switch S1 will still have no the loud sound comes out from a....
-
The I2C bus uses a bi-directional Serial Clock Line [SCL] and Serial Data Lines [SDA]. Both the SCL and SDA lines are pulled high via an Rp resistor. Resistor Rs is optional, and used for ESD protection for `Hot-Swap` devices. No other lines are specified.....
-
This generator uses avalanche noise, and is based on a design by Will Ware. Herein are instructions as to how you can use a pic chip to analyze a noise source and output random data serially. I`ve included circuit diagrams as well as links to instructions....
-
One end of JTAG Cable is a DB25 header used for connecting the parallel port of computer and the other end is a 20 pin (or 14 pin) IDC header used for connecting the user`s circuit board. Fig. 1 and Fig. 2 form a complete JTAG Cable circuit diagram. The....
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The sound will a little 2W+2W just but enough with 6 sizes are inch 8ohm loudspeakers. as a result still have a voice good loud the moderately. Request friends have fun the circuit amplifies this miniature please yes. If phone your light exceedingly ring.....
-
Doing this atari Sequencer and I think there`s an error in the drawing can not see. the atari is working but when I press the switch to ring the Sequencer, the sound disappears. please help. I don`t know if it will solve your problem, but your pin 13 at the....
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As we know its on chip multivibrator means with IC555 one can design astable, monostable, bistable multivibrators. Its main applications are to generate timings, clock waveform, generate synchronizing signals, square wave oscillator and many more. So here we....
-
Electronics Tutorial about the Hall Effect Sensor and Magnetic Hall Effect Switch which is an Output Transducer used to detect Magnetic Fields....
-
The amplifier of circuit, use negative current feedback. So, the load current depends mainly from the input signal and no so much from the impedance of loudspeaker. The inductor current of loudspeaker develop above in the R7 a voltage. This voltage is drive....
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Here`s simple FM transmitter circuit using medium power 2N2218 transistor. Micropohone is of electret type that connects to two input terminals and the antenna should be a copper wire from 15 to 40 cm. Below is schematic circuit of the fm transmitter....
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-
Using only two active components, we can build an AM radio receiver working on MW (Medium Wave) Band. The circuit uses straight receiver configuration, where....
-
This motor starter protects single-phase motors against voltage fluctuations and overloading. Its salient feature is a soft on/off electronic switch for easy operation. The transformer steps down the AC voltage from 230V to 15V. Diodes D1 and D2 rectify the....
-
The following circuit shows about Mains Remote-Alert Circuit Diagram. Features: simple circuitry, the transmitted signal is conveyed into the ...
-
-
The schematic shown here is a circuit of a 555 tracking transmitter. 555 is a famous versatile IC used in many electronic projects. In the below mentioned circuit this IC is used to generate a tone which will be transmitted through the FM transmitter circuit....
-
Clap operated Remote Control for Fans in this website is used control ten-step speed of fan circuit diagram and description of Clap operated Remote Control for Fans...
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A usb powerer laptop Fm transmitter using for home theater and other woofer that have fm reciever to transmits songs of laptop to sound system of ur room...
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There are an incredibly large number of TX and RX Modules for micro-controllers. The cheapest I found was $9.99, not bad but I remember seeing FM rece....
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ICs with on-board oscillators requiring low-frequency fundamental crystals are commonplace, but nowG‚IC frequency multipliers require the higher frequencies of third overtone crystals. Compared to its fundamental implementation however, the third-overtone....
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The ASUS Eee is a fantastic ultra-portable notebook with almost everything required for geeks (and nothing that isn`t). Plus it features fantastic build quality and is very well priced. If you live in New Zealand you can get them from DSE ; at the time of....
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3 channel audio mixer circuit uses voltage 9VDC summber which can supplied from a battery. 3 channel audio mixer circuit is designed special for the purposes of this Public Amplifier. Because the audio circuit of this mixer is designed specifically for the....
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The LA3401 is an MPX IC for FM car stereo use. It con- tains the VCO non-adjusting function, skip noise eliminat- ing function, and pilot cancel function and is packaged in a 16-pin SIP. By Sanyo Semiconductor Corporation ..
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TDA 2030 audio amplifier can output 20 W but in this schematic we have reduced the power to 8w and we use 10w speakers. The input sensivity is around 200mV and the amplifier is set by the 47k and 1.5k resistors. TDA2030 amplifier circuit di....
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White Light Emitting Diodes recently available can be used as a powerful alternative to incandescent lamps in lighting applications. Today`s White LEDs are....
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The electronic circuit is a TV modulator that is really no more than a transmitter. It is a very small transmitter, admittedly, but none the less that is what it is. What does a modulator actually do In general -and this design is no exception to the rule -....
RF power amplifier circuit of this work is based on the transistor 2SC1970 and 2N4427. The set output power of 88-108 MHz FM RF Amplifier With 2SC1970 is about 1. 3W and the input driver is 30-50mW. RF driver amplifier circuit uses a 2N4427 and its power....
With the easy availability of inexpensive digital multimeters, and integrated circuit temperature sensors, it is now very easy to build a sensitive and accurate digital thermometer that can be used for many experiments around the house or in the amateur....
This evening as I came home from a paragliding appointment, I had a feeling that I must improve my yesterday-written RGB LED driver code. So I cleaned it up a bit, and wrote a lot of comments to make it more useful for educational purposes. I`m alredy over....
The following circuit shows about PIR Sensor Timer Circuit Diagram. Features: simple circuit, more accurately, efficient. Component: Diode, ....
This is a very simple liquid detector that use a relay to open an evacuation van. You can use it for water or any liquid that conduct electricity. Use any...
The ATR0981 is a monolithic IC manufactured using Atmels advanced SiGe technol ogy. The IC performs a transmit and receive front-end function, dedicated for a frequency range of 300 MHz to 500 MHz. It consists of a Low-Noise Amplifier (LNA) and a Power....
The red laser line slowly sweeps the object (here a Fabuland lamb head). Behind the scanned object, two planes with a 90 ° angle provide reference to the scanning software. They are also marked with regularly spaced black dots that serve during the....
The IR photo transistor Q1 (Radio Shack 276-145A) or similar is connected to the set input (pin 6). The photo transistor should be shielded from direct light so that the voltage at the set input (pin 6) is less than 1 volt under ambient conditions and moves....
Emphasis on the high bands (902 thru 10 GHz) had been a priority here at ARS KMGT for the last few years. The low bands were in pretty good shape, so not much other than standard maintenance was needed there. However, improvements to the microwave station....
This circuit shows how a 4017 CMOS decade counter can be used to build a timer circuit. Push-button S1 will discharge capacitor C1 through resistor R2. When S1 is released, C1 will charge up through R1 causing a rising edge at the clock input of IC1. This....
The following mains operated LED flasher circuit which is actually an astable multivibrator circuit utilizes only a diac and resistor arrangement for implementing interesting wig wag flashing of two LEDs. The circuit was shared with me by Mr. Vineesh, who is....
This circuit came from a 14 Watt Commercial Electric spiral bulb from Home Depot. In fact, I drew it in that way because it was layed out very well, so much credit should go to Sam Goldwasser. It is a rather interesting oscillator circuit which I will....
The tuned coil L1, has two output tapping for the antenna connection, marked "A" and "B". These are both low-level outputs and you choose which tapping you want to use ( stable low range, or more unstable but higher range). Tap B (2. 5%) takes just a very....
Arduino sketch and other useful information about driving a brushless DC motor, such as DVD drive spindle motor, using Arduino or another MCU..
TDA 2030 is produced by SGS Ates and is a complete audio amplifier. Class AB amplifier to deliver final cand 14 watts into 4 ohms, a source of +-14V power. Connecting two TDA2030 through cheap power transistors that can create an amplifier that can deliver a....
Although a distribution amplifier may accept different input channels and output those to particular outputs. The term is meant to describe something that outputs the same signal to some number of outputs,based on one input. The outputs are identical, and....
This timer circuit is similar to the 5 to 30 minute timer except that when switch S1 is closed, the on/off actionof the circuit will continue indefinitely until S1 is opened again. A 7555 time and low leakage type capacitor for C1must be used. The 6 way....
This circuit was designed to produce an audible alarm when the mains power is interrupted. Such an alarm is essential for anyone whose livelihood depends....
It is using the IC-type multi-vibrator for the oscillator of the alternating current. The frequency is about 60 Hz. I used 7400 as the IC for the oscillator but 7404 is OK. The signal of the oscillator has the switching operation with TR1-TR4. TR2 and TR4....
The adjustment control for the contrast of an LC-Display is typically a 10-k potentiometer. This works fine, provided that the power supply voltage is constant. If this is not the case (for example, with a battery power supply) then the potentiometer has to....
The Micromag3 is a 3-axis magnetometer that measures the strength of magnetic fields in 3 directions. It can measure magnetic fields that are approximately the same strength as the Earth`s magnetic field. Common applications include orientation sensing and....
Laboratory power supply is characterized by its wide adjustable voltage range and its robustness. Continuous voltage adjustment is necessary, as well as current limiter for safety and robustness. You can build suitable one using LM10 op-amp and voltage....
The TPA2011D1 is a 3. 2-W high efficiency filter-free class-D Audio Power Amplifier (class-D amp) in a 1, 21 mm G— 1, 16 mm wafer chip scale package (WCSP) that requires only three external components. The TPA2011D1 is a 3. 2-W high efficiency filter-free....
In the production of LCD projector, the main factors of the threatening life of LCD screen is the temperature of halogen. The multi-function controller made by this circuit is very effective for the protection of liquid crystal projector. The LCD projector....
The chip in the middle with the tiny bullet holes in it is almost certainly proprietary. At best you can salvage a few parts if your time is worth nothing, but you don`t need to know the circuit for that. Olin Lathrop Apr 9 `13 at 14:24 Just to make sure:....
This rotative speed regulator circuit schematic allows to control the holing speed of your borer or driller machine. This project is based on the fact tha....
IC1 forms a differential amplifier for the electromagnetic pulses generated by the engine sparking-plugs, picked-up by sensor coil L1. IC2A further amplifies the pulses and IC2B to IC2F inverters provide clean pulse squaring. The monostable multivibrator....
A keyboard key figure who work with electrical contact between the surface of the keyboard and the underlying circuit when pressed keytop area, used by some home computers the early 1980s, and has been widely used in consumer electronic devices...
L1 and L2 were made by wrapping three tight side by side loops around a sharpie marker, I also made L2 by wrapping about 8 inches of 35AWG magnet wire around a ferrite core, careful to make the windings side by side and glued it in place with a hot glue gun,....
I`m trying to use a 74LS259 8 bit addressable latch. I`m trying to get it working without a micro-controller first to ensure that I understanding the wiring 100%...
The following circuit shows about LM4652 IC For 170 Watt Power Amplifier Circuit. Features:?used in portable HiFi systems such as power ....
The TC4422 chip is in place of the BD140/BD139 totem pole. Unfortunately I do not have a multisim model for this chip so I can add it to the circuit....
This is the diagram od electro-harmonix graphic equalizer. You can specify the number of channels according to your needs. You just need to parallel the components: C1, C2, R1, an om-amp, Potensiometer and a 470 ohm resistor. The frequency to be boost....
This article lists various types of audio amplifier circuits using Mosfet. We have tested all these circuits in our lab and we found all of them performing satisfactorily. The amplifier employs only one transistor and two MOSFETs and few resistors and....
This circuit shows about LM2576T IC Step-Down Switching Power Supply Circuit Diagram. Features:60V input voltage, 3.3 V/5V/12V/15V output ....
Moisture deposited on a surface bridges across a grid of wires or circuit board traces. A circuit measures the AC ohms resistance through the grid. - Warm wet weather promotes fungus and insect pests of plants. - Quick detection of rain can be used in....
The Fender Bassmanis a legendary guitar amp known to both guitar and bass players. It wasintroduced in 1951, primarilytargeted for bass guitar players andpromoted asa bass ampfor the Fender Precision Bass guitar, the first mass-produced electric bass guitar....
The Testatika design based on the Pidgeon/Wimshurst machine is of course only one type of electrostatic generator to build this system around. Since the early 1900s such power generators have come a long way in sophistication - and in power output - recently....
Telephone Tone Ringer TA31001 The UTC TA31001 is a bipolar integrated circuit designed for telephone bell replacement. It CAN also be used as alarms or other alerting devices. By LianShun Electronics Co. , Ltd ..
The HV732 is a complete, high-speed, high voltage ultra- sound transmitter pulser. This high performance CMOS in- tegrated circuit (IC) is in a single 7x7x0. 9mm 44-lead, multi- die, QFN package. The HV732 CAN deliver up to a ±2A source and sink cur- rent to....
The oscillator circuit uses a center-tapped transistor output transformer to serve as a load for the collector of Q1, supply a feedback signal for the base, and serve as the output winding for driving the speaker. R1 supplies dc bias and C1 completes the ac....
This circuit bellow shows an electrical circuit apply for Audi A4 Quattro 2004 model years. Component: Transmission, Anti-lock Brakes Circuit ....
This flashing brake light circuit can be used for motorcycles. When brake-light switch S1 is closed, power is applied to U1 and U2. Two inverters of U2, a....
A simple 6 volt dc regulator circuit with diagram and schematic using 7806 Ic, a positive voltage regulator.Its an elementary 6 volt,1 ampere power supply circuit....
This is an article about my new PCB design for CMoy headphone amplifier. Main feature is that the new PCB fits exactly to the classic Altoids tin-can. This new CMoy incorporates moreover bass-boost circuit and constant current charger for 9V battery. P1 is....
The chart shows the Wien bridge sine wave oscillator circuit. The amount of negative feedback circuit is determined by the internal resistance of FET. When the peak value of oscillator output reaches the regulated voltage of regulator diode D1, Q2 turns on,....
This article is the result of the very positive feedback on the hardware articles that I have written so far. You LinuxFocus readers are really a great audience! Some of you wanted to know how to interface the USB bus. So here is a nice solution. We use the....
In this article we show that enhancement mode GaN transistors enable significant efficiency improvements in resonant topologies and demonstrate a practical example of a wireless power transmission....
Microchip Technology`s MCP73113, MCP73114 and MCP73213 Lithium-Ion (Li-Ion); and MCP73123, MCP73223 Lithium Iron Phosphate (LiFePO4) Chargers feature Overvoltage Protection (OVP), which prevents overheating and damage to the battery-charger circuit from....
Mark builds and tests the DIY Moving Magnet (MM) Phono Preamplifier Kit that was featured in Silicon Chip Magazine, August 2006. The kit comes complete with everything you need except for an enclosure and a power supply (AC walwart). ...
The indicator described here is specifically designed for adjusting the dynamic limiter described elsewhere in this edition and checking whether the maximum level of the reference voltage (P1) needs to be modified. Her e we use a 4 -to -16 decoder IC (type....
A very simple circuit for FM receiver, no IC required, and only a single transistor. I`m not sure whether this transistor works or not, I`m going to try this out. Have you guys seen this before It is a regenerative or super-regenerative simple radio....
Some 15 years ago it was common to see small key-holders emitting an intermittent beep for a couple of seconds after its owner whistled. These devices contained a special purpose IC and therefore were not suited to home construction. The present circuit is....
This circuit is the sound generator super siren, for use be alarm signal get by live frequency generator circuit that use, op-amp circuit. The principle works to are while still no press switch S1 will still have no the loud sound comes out from a....
The I2C bus uses a bi-directional Serial Clock Line [SCL] and Serial Data Lines [SDA]. Both the SCL and SDA lines are pulled high via an Rp resistor. Resistor Rs is optional, and used for ESD protection for `Hot-Swap` devices. No other lines are specified.....
This generator uses avalanche noise, and is based on a design by Will Ware. Herein are instructions as to how you can use a pic chip to analyze a noise source and output random data serially. I`ve included circuit diagrams as well as links to instructions....
One end of JTAG Cable is a DB25 header used for connecting the parallel port of computer and the other end is a 20 pin (or 14 pin) IDC header used for connecting the user`s circuit board. Fig. 1 and Fig. 2 form a complete JTAG Cable circuit diagram. The....
The sound will a little 2W+2W just but enough with 6 sizes are inch 8ohm loudspeakers. as a result still have a voice good loud the moderately. Request friends have fun the circuit amplifies this miniature please yes. If phone your light exceedingly ring.....
Doing this atari Sequencer and I think there`s an error in the drawing can not see. the atari is working but when I press the switch to ring the Sequencer, the sound disappears. please help. I don`t know if it will solve your problem, but your pin 13 at the....
As we know its on chip multivibrator means with IC555 one can design astable, monostable, bistable multivibrators. Its main applications are to generate timings, clock waveform, generate synchronizing signals, square wave oscillator and many more. So here we....
Electronics Tutorial about the Hall Effect Sensor and Magnetic Hall Effect Switch which is an Output Transducer used to detect Magnetic Fields....
The amplifier of circuit, use negative current feedback. So, the load current depends mainly from the input signal and no so much from the impedance of loudspeaker. The inductor current of loudspeaker develop above in the R7 a voltage. This voltage is drive....
Here`s simple FM transmitter circuit using medium power 2N2218 transistor. Micropohone is of electret type that connects to two input terminals and the antenna should be a copper wire from 15 to 40 cm. Below is schematic circuit of the fm transmitter....
Using only two active components, we can build an AM radio receiver working on MW (Medium Wave) Band. The circuit uses straight receiver configuration, where....
This motor starter protects single-phase motors against voltage fluctuations and overloading. Its salient feature is a soft on/off electronic switch for easy operation. The transformer steps down the AC voltage from 230V to 15V. Diodes D1 and D2 rectify the....
The following circuit shows about Mains Remote-Alert Circuit Diagram. Features: simple circuitry, the transmitted signal is conveyed into the ...
The schematic shown here is a circuit of a 555 tracking transmitter. 555 is a famous versatile IC used in many electronic projects. In the below mentioned circuit this IC is used to generate a tone which will be transmitted through the FM transmitter circuit....
Clap operated Remote Control for Fans in this website is used control ten-step speed of fan circuit diagram and description of Clap operated Remote Control for Fans...
A usb powerer laptop Fm transmitter using for home theater and other woofer that have fm reciever to transmits songs of laptop to sound system of ur room...
There are an incredibly large number of TX and RX Modules for micro-controllers. The cheapest I found was $9.99, not bad but I remember seeing FM rece.....jpg "Advantages and challenges of third-overtone IC crystals")
ICs with on-board oscillators requiring low-frequency fundamental crystals are commonplace, but nowG‚IC frequency multipliers require the higher frequencies of third overtone crystals. Compared to its fundamental implementation however, the third-overtone....
The ASUS Eee is a fantastic ultra-portable notebook with almost everything required for geeks (and nothing that isn`t). Plus it features fantastic build quality and is very well priced. If you live in New Zealand you can get them from DSE ; at the time of....
3 channel audio mixer circuit uses voltage 9VDC summber which can supplied from a battery. 3 channel audio mixer circuit is designed special for the purposes of this Public Amplifier. Because the audio circuit of this mixer is designed specifically for the....
The LA3401 is an MPX IC for FM car stereo use. It con- tains the VCO non-adjusting function, skip noise eliminat- ing function, and pilot cancel function and is packaged in a 16-pin SIP. By Sanyo Semiconductor Corporation ..
TDA 2030 audio amplifier can output 20 W but in this schematic we have reduced the power to 8w and we use 10w speakers. The input sensivity is around 200mV and the amplifier is set by the 47k and 1.5k resistors. TDA2030 amplifier circuit di....
White Light Emitting Diodes recently available can be used as a powerful alternative to incandescent lamps in lighting applications. Today`s White LEDs are....
