This is a great audio amplifier circuit based on single power IC TDA7294. TDA7294 is intended for use as a high quality audio class AB amplifier in hi-fi applications. It has very low noise and distortion, […]
Circuit Schematic Diagram
6-10W Audio Amplifier with IC TDA2002
This is a class AB 6-10W audio power amplifier circuit which built using a TDA2002 or TDA2003 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy […]
FM Receiver with TDA7021T
This is the circuit diagram of mini FM receiver that build based on single FM IC TDA7012T. Components List: R1 = 8k?2 R2 = 10k? R3 = 390? C1,C3 = 10nF C2,C6,C9,C16 = 100nF C4 = […]
25W Low Power Inverter
This is 25W low power inverter which contain of only 9 parts and turn 10VDC – 16VDC into 115V / 60Hz square wave power. This circuit has capability to operate AC equipment up to 25W. The […]
6-12V Variable Regulated Power Supply
This is an adjustable / variable power supply which have adjustabled output voltage from 6-12 DC volt. This power supply can be used for general circuit or gadget which require 6 – 12DC voltage to work. […]
Three Stage 9V FM Transmitter
This circuit is a powerful three stage, 9V FM transmitter (Tx) with a range of up to 1 kilometer in the open. It uses an RF transistor in its output stage and two BC547″s for the […]
12VDC to 9VDC Converter
This is a 12VDC to 9VDC converter circuit. You may use this DC to DC stepdown converter circuit if you have fixed 12V power supply / battery, but you need 9V power supply for your electronic […]
Basic RF Oscillator
If you’re interested in RF circuit, then you should know about this basic RF oscillator. This basic RF oscillator circuit is easy to build and the components are not critical. Most of them can be found […]
LED Flasher with LM3909
This is a very easy and simple LED flasher with only three components: a flasher IC LM3909, a LED indicator and an electrolytic capacitor. The supply voltage is 1.5V, so it can be operated using a […]
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 signals such as electret microphone. Use it in front of an RF oscillator to make an […]