Simple Guitar Fuzz Circuit

Guitar Fuzz Circuit:  The input signal is amplified by the two transistors. The distorted output is then clipped by the two diodes and the high frequency noise is filtered from the circuit via the 500pF capacitor. The 1 M not adjusts the intensity...

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Active Tone Control Circuit Using a Single Opamp

The input signal is applied to the non-inverting input of the lC which is a Siemens TAA861 operational amplifier. Bass and treble boost and cut are con_trolled by the potentiometers RV1 and RV2 respectively. Control range is 20 dB of boost or cut at...

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How to Generate Electricity from Heat or Body Warmth

The present design exploits the above property of tunnel diodes by having a series connected set of these devices charge a battery with the aid of solar energyThe operating principle of this unique design is remarkably simple.   As seen in...

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Simple Automatic Overhead Water Level Controller Circuit

 In most of the cities and towns in our country the corporation or municipal water supply is restricted to a few hours in the morning and evening. So nowadays most of the urban houses are equipped with overhead water tanks to ensure 24-hour water...

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Simple Solar charger circuit project using transistors

A very simple solar charger circuit project can be designed using few external electronic parts . This simple solar charger circuit is capable of handling charge currents of up to 1A. Alternate component values are given in the figure for lower current...

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Colour Sensor

Colour Sensor Circuit diagram is an interesting project for hobbyists. The circuit can sense eight colours, i.e. blue,green and red (primary colours); magenta, yellow and cyan (secondary colours); and black and white. The circuit is based on the fundamentals...

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Programming The Propeller IC

Parallax, well known for its successful Basic Stamp IC, has recently introduced the Propeller: a new microcontroller with a certain difference. It packs no less than eight 32-bit processors (referred to as COGs in Propeller jargon) into a single...

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Dual Power Supply 78xx 79xx

Many times the hobbyist wants to have a simple, dual power supply for a project. Existing powersupplies may be too big either in power output or physical size. Just a simple Dual Power Supply is required.For most non-critical applications the best and...

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Sensor and Detector Liquids Circuit Diagram

This is a very simple liquid detector which controls a relay, this gives you the option to be used for hundreds of applications. You can use it as a float switch to turn on the water pump alarm, rain, etc.. He uses a 4093 IC and transistor can be anyone,...

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Supply Variable 1V to 9V Circuit using Power PC

This is a variable power supply which converts an input voltage from 12V SMPS / PSU a desktop computer, to an output voltage from 1.25 to 9 volts. This converter will be very useful for electronics hobbyists. The circuit uses a LM317T regulator...

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FM Stereo Transmitter

Youll find that this is a very easy project to build. It will transmit good quality sound in the FM band ( 88 - 108 mhz ). One inportant item is that the IC chip operates on 3 volts DC. The chip will get destroyed if it is operated on any voltage...

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A Simple MD Catridge Preamplifier

Phonographs are gradually becoming a rarity. Most of them have had to yield to more advanced systems, such as CD players and recorders or (portable) MiniDisc player/recorders. This trend is recognized by manufacturers of audio installations, which means...

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Suitable AC DC Circuit Diagram

This circuit is simple, but very useful as well as simple and inexpensive. Its use is simple, when the positive (red) is connected to a positive voltage DC and the black lead on the negative, the red LED lights. Reversing polarities the Green LED lights....

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Outdoor Lighting Controller

When you step out of your brightly-lit house  into the darkness, it takes a while for your  vision to adjust. A solution to this problem  is this outdoor light with automatic switch-off. As a bonus, it will also make it a little bit ...

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Fire Alarm Circuit Diagram

The Fire Alarm circuit presented here is very simple, a diode reverse-biased germanium is used as a heat sensor low cost. In this project you can use two or three diodes connected in parallel at different locations in case of fire any of the diodes can...

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Battery powered Headphone Amplifier

Low distortion Class-B circuitry 6V Battery Supply Some lovers of High Fidelity headphone listening prefer the use of battery powered headphone amplifiers, not only for portable units but also for home "table" applications. This design is intended to...

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Signal Tracer

The main part of this circuit is the LM386 amplifier chip. It also uses a transistor input to buffer the input signal and provide extra gain for the LM386. The little unit has helped me out on numerous occasions when trouble shooting any amplifier...

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Battery powered Night Lamp Circuit

Ultra-low current drawing 1.5V battery supplyThis circuit is usable as a Night Lamp when a wall mains socket is not available to plug-in an ever running small neon lamp device. In order to ensure minimum battery consumption, one 1.5V cell is used, and...

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Wire Break Alarm With Delay Circuits Diagram

Simple Wire-Break Alarm With Delay  Alarm and Security Here is a simple circuit of wire-break alarm that activates after a delay of 15 to 30 seconds. When the thin-wire loop running across the entrance door is broken, the alarm sounds after...

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Simple LCD Module in 4 bit Mode

In many projects use is made of alphanumeric LCDs that are driven internally by Hitachi’s industry-standard HD44780 controller. These displays can be driven either in 4-bit or 8-bit mode. In the first case only the high nibble (D4 to D7) of the display’s...

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Portable Microphone Preamplifier

High headroom input circuitry, 9V Battery operationThis circuit is mainly intended to provide common home stereo amplifiers with a microphone input. The battery supply is a good compromise: in this manner the input circuit is free from mains low frequency...

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DC Converter DC 12V to 24V Circuit Diagram

DC Converter - DC 12V to 24V Circuit Diagram. A voltage converter is very useful, if it raises the voltage from 12v to 24v. Can be used to power low power equipment and even a battery charger Notebook. It works with a two-transistor oscillator, type...

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SP LED Scanner

Here may be a easy LED chaser simulating a scanner through the rear and forth light-weight result. It used high bright White LEDs to grant the chaser result. The circuit uses an oscillator to provide quick pulses and a decade counter to drive the LEDs.IC1...

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Dimmer Brightness LED Driver Circuit Diagram

This is a very simple circuit of a dimmer, ie a controller LED brightness, which is powered from the USB port of a PC and a connection is very simple. The resistor R1 sets the maximum current of the LED with the maximum potentiometer, resistor R2 should...

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1 5 35 Volt DC Regulated Power Supply

Here is the circuit diagram of regulated power supply. It is a small power supply that provides a regulated voltage, adjustable between 1.5 and 35 volts at 1 ampere. This circuit is ready to use, you just need to add a suitable transformer. This...

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Low Impedance Microphone Amplifier

The circuit is a microphone amplifier for use with low impedance (~200 ohm) microphones. It will work with stabilized voltages between 6-30VDC. If you dont build the impedance adapter part with T1, you get a micamp for higher impedance microphones....

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Simple 8 Random Flashing LEDs

This project flashes eight LEDs in an apparently random manner. It uses a 4060 combined counter and display driver IC which is designed for driving 7-segment LED displays. Circuit diagram : Simple 8 Random Flashing LEDsThe sequence is not really...

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Strong Headphone Amplifier

Some lovers of High Fidelity headphone listening prefer the use of battery powered headphone amplifiers, not only for portable units but also for home "table" applications. This design is intended to fulfill their needs. An improved output driving...

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Ultra voltmeter and Voltage sensing Circuit Diagram

This is a circuit that detects tesões 1.8 V up to 230 Volts AC or DC. This circuit is not a novelty, but it proved so useful, simple and cheap that every technician should have one on the bench.When the tip (red) positive is connected to a positive DC...

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Indicator Balance Stereo Sound Circuit Diagram

This is an Indicator Balance Stereo Sound Circuit Diagram, that is, it causes the two channels are to the same output level. This circuit eliminates the problems that may occur during recording and playback sound. It is connected to the output terminal...

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BRIGHT FLASH FROM FLAT BATTERY 3v WHITE LED FLASHER

BRIGHT FLASH FROM FLAT BATTERYThis circuit can flash a white LED, on a provide from 2v to 6v and turn out a really bright flash. The circuit takes regarding 2mA and recent cells are often used. the 2 100u electros in parallel produce a much better...

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Feather Touch Switches For Main

An ordinary AC switchboard contains separate switches for switching ‘on’/’off’ electric bulbs, tube lights, fans, etc. A very simple, interesting circuit presented here describes a feather-touch switchboard which may be used for switching ‘on’/‘off’...

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Oscillator Sine wave Circuit Diagram

This circuit is a sine wave oscillator which uses operational amplifiers working in oscillation back (positive feedback), or the oscillation output to the input. This oscillator is called Wien bridge circuit is often used. The oscillator Sine wave oscillator...

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Voltage Monitor Circuit Diagram

This is a very simple circuit which can be modified to the users needs. Its operation is simple, when the input voltage is 0, the LED (LO). The LED turns off when the voltage increases to the level determined by R2.Voltage Monitor Circuit Diag...

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Simple Wire Continuity Tester by LM709

While detecting discontinuities on a circuit board, it is probable to include resistors, semiconductors or other elements in measurements. This situation may cause wrong results. On the other hand sometimes the voltage or current of the multimeter...

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Temperature Candle Using LED

LED based projects require a lot of skill and hence only experienced circuit designers try out these circuits. But there are also a few circuits in this genre that can be done by amateur electronic hobbyists. The temperature candle is one such circuit....

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Megaphone Circuit Diagram

This is a very simple loudspeaker amplifier which uses as an IC LM386, which is one of the most versatile amplifiers exists. The LM386, an operational amplifier receives the signal of MIC1 is a microphone which amplifies it and sends it to SPKR1 which...

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Dual White Noise and Pink Noise Generator Circuit Diagram

This is a generator circuit which is very useful, it simultaneously generates two types of noise, pink and white. The noise generator is a circuit that produces electrical noise. Noise generators are used to test, measure noise, frequency response, and...

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Small Audio Amplifiers Using LM386 and NE5534

Many electronic projects require the use of a small audio amplifier. Be it a radio transceiver, a digital voice recorder, or an intercom, they all call for an audio amp that is small, cheap, and has enough power to provide adequate loudness to fill...

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