Electronic Schematic Diagram

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? […]

Lithium Battery Charger

This battery charger circuit is used to recharge the rechargable lithium battery. The circuit comes from Molicel. Charging is accomplished with a constant current of […]

One Chip AM Radio Receiver

Here is the AM Radio receiver circuit diagram based on old single IC MK484. Components List: R9, R10_________ 6R8 R6_____________ 100R R3_____________ 1K R1_____________ 4K7 […]

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 […]

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 […]

light dark activated relay circuit electronic

Dark and Light Activated Relay

This is the basic dark and light sensor which using photoresistor as sensing component. The transistor act like as a switch, when the “switch” in […]

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 […]

Here is the wailing alarm siren circuit diagram: Components List: R1,R5___________ 4.7K R2______________ 47K R3______________ 10K R4______________ 100K Rx______________ *see text C1,C4__________ 100uF/25V, electrolytic C2,C3__________ […]