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The ADC12038 families are 12-bit plus sign sampling ADC converters with serial I/O. These devices have configurable Analog multiplexers with 2, 4, or 8 input channels. On re- quest, these A/Ds perform a self calibration routine that minimizes linearity,....

This is a circuit of 6 Zone Alarm with LED Display . This alarm system has 6 independent zones, a 7 segment LED display, 1 timed entry/exit zone ....

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Using the LM2876 audio power amplifier circuit can be designed a very simple high efficiency power audio amplifier capable of delivering 40W of continuous average power to an 8 © load with 0. 1% THD+N from 20Hz 20kHz. The LM2876 audio power amplifier circuit....

A Variable DC Power Supply is one of the most useful tools on the electronics hobbyist`s workbench. This circuit is not an absolute novelty, but it`s simple, reliable, ""rugged"" and short-proof, featuring variable voltage up to 24V and variable current....

Here is the circuit diagram of a simple two transistor alarm circuit that can be operated from a 9V PP3 battery. Here the two transistors are wired to form an oscillator whose frequency increases when switch S2 is pressed and decreases when S2 is released.....

Hello, I assembled a circuit on a breadboard which is separated in 2 parts: the right part is for generating an alarm which wails. the left part is....

This project is a FM Radio based on TDA7000 and LM386 integrated circuits. What is unusual about TDA7000 IC is how it operates. It is a proper FM superhet receiver, with the usual local oscillator, mixer, IF amplifier, limiter, and phase detector. The....

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The circuit shows TL494 Pulse Width Modulated Step?Down Converter Circuit Schematic. With this circuit you can have circuit test such Line Regulation, Load Regulation, Output Ripple, Short Circuit Current and Efficiency test with various Vin conditions.....

Together with a good directional antenna this high performance two-stage antenna amplifier for the VHF FM broadcast band will enable you to capture far rem...

This is a simple schematic which can be assembled to control a lamp with a Sony TV remote control. Circuit uses a PWM signal connected to photocoupler which isolate the power part from microcontroller. Power part has very interesting solution on how halogen....

The CDCF5801 provides Clock multiplication from a reference Clock (REFCLK) signal with the unique capability to delay or advance the CLKOUT/CLKOUTB with steps of only 1. 3 mUI through a phase aligner. For every rising edge on the DLYCTRL pin the CLKOUT is....

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Here`s the circuit diagram of a four RF stage FM transmitter. The stages are, very high frequency (VHF) oscillator built around a HF transistor BF494, a pre- amplifier built around transistor BF200, a driver transistor 2N2219 and a power amplifier using....

or take one FET, one Zener, and one resistor. No FET and resistor needed if the current is in the range of specs for a zener. Or take a P-channel....

This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built in voltage regulator) and can be powered from almost every source. This circuit is very easy to explain: When the test....

This electronic rf detector electronic project is designed using common transistors and other few common electronic parts. This rf detector responds to RF signals bellow the standard broadcast band to well over 500 MHz and provides an visual, and audible....

Motorola VWA63 Auto Radio is an automotive type all-transistor superheterodyne AM radio for standard broadcast reception. The following schematic illustrates....

This is a simple update to Mr. Hareendran`s PIR Sensor Security Light circuit. It has a shortcoming limits the relay voltage to approximately 3. 3V. While this may function with some 5V relays, it will not function with all. The nature of an emitter follower....

This is simple 3-digits digital volt meter.PIC16F676 used to read analog signal(voltage) and display the value on 3-digits 7-segment. You can apply similar principles to measure DC current with parallel R shunt..

The first reverberator we present is based on TDA1022, the most used BBD. Reverberator adjustements for proper functionality Before we connect the power su....

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This circuit is an Electronic Locker. It is controlled by a switches combination (by a code). There is a switch matrix on the door of the locker. This one is a unit of switches connected into 4 arranged of 4 columns for a total of eight terminals. When we....

This is a modified version of the first SSTC I built, the Kaizer SSTC I. It uses the same secondary, topload and driver board. New things is a full bridge of IRFP460 MOSFETs, audio modulation, shielded drivers and a new casing. I took apart a 19 ³ LCD....

The circuit shown here is a simple stereo FM transmitter that can transmit signals of high quality with a range of 70 feet. The circuit is based on BH1417 PLL Stereo Transmitter IC semiconductor Rhom. The IC has separate sections of audio processing for the....

Circuit above shows a circuit diagram of the Clock Controller V1.1. P3.0-P3.3 also drives a base pin of 4-PNP transistor, 2n2907 with sink current ....

The Amstrad CPC 464 was released in 1984 and discontinued in 1990. It was possible to purchase a CPC 464 with a green screen (GT64) as well as with the standard colour screen (CTM640). Like most 8bits computers, the CPC has it`s OS (aka Firmware ) and a....

It uses very common building blocks. The high voltage power supply is a classical oscillator circuit used in many places where a low current and high voltage is needed. TR is a step-up transformer salvaged from a xenon light circuit. You can find simmilar....

This circuit can control any one out of 16 devices with the help of two push-to-on switches. An up/down counter acts as a master-controller for the system. A visual indication in the form of LEDs is also available. IC1 (74LS193) is a presettable up/ down....