Basic Monostable Multivibrator based IC timer 555
The following diagram is the circuit diagram of basic monostable multivibrator based IC timer 555. This circuit uses only 4…
LED Flasher with LM3909
This is a very easy and simple LED flasher with only three components: a flasher IC LM3909, a LED indicator…
Simple Audio Pre-Amplifier
This is a simple audio pre-amplifier circuit using single transistor 2N3904. This easy circuit provides good gain to weak audio…
AM Radio Receiver
This is the circuit diagram of mini AM Radio receiver. All general purpose transistors should work in this circuit, you…
9V FM Radio Transmitter
Here the simple and low cost FM transmitter circuit. The frequency range of this FM transmitter should be about 89MHz…
Two Station Intercom based on LM386
This a two station intercom. It uses two wires to run between each intercom unit. Each is self contained with…
6-10W Stereo Audio Amplifier with IC TDA2005
Here the schematic diagram of 6-10W stereo power audio amplifier with IC TDA2005: Components List: R1, R9 ________ 1K ohm…
British Police Car Siren
This is the sound generator which will simulate British police car siren. The circuit is built using 2 pieces of…
Simple Bench Amplifier
Above schematic diagram is a small 325mW amplifier circuit based on LM386 with a voltage gain of 200 that can…