FM Receiver with TDA7021T

55 years ago

This is the circuit diagram of mini FM receiver that build based on single FM IC TDA7012T. Components List: R1…

Lithium Battery Charger

55 years ago

This battery charger circuit is used to recharge the rechargable lithium battery. The circuit comes from Molicel. Charging is accomplished…

One Chip AM Radio Receiver

55 years ago

Here is the AM Radio receiver circuit diagram based on old single IC MK484. Components List: R9, R10_________ 6R8 R6_____________…

25W Low Power Inverter

55 years ago

This is 25W low power inverter which contain of only 9 parts and turn 10VDC - 16VDC into 115V /…

6-12V Variable Regulated Power Supply

55 years ago

This is an adjustable / variable power supply which have adjustabled output voltage from 6-12 DC volt. This power supply…

Dark and Light Activated Relay

55 years ago

This is the basic dark and light sensor which using photoresistor as sensing component. The transistor act like as a…

Three Stage 9V FM Transmitter

55 years ago

This circuit is a powerful three stage, 9V FM transmitter (Tx) with a range of up to 1 kilometer in…

Wailing Alarm Siren

55 years ago

Here is the wailing alarm siren circuit diagram: Components List: R1,R5___________ 4.7K R2______________ 47K R3______________ 10K R4______________ 100K Rx______________ *see…

12VDC to 9VDC Converter

55 years ago

This is a 12VDC to 9VDC converter circuit. You may use this DC to DC stepdown converter circuit if you…

Basic RF Oscillator

55 years ago

If you're interested in RF circuit, then you should know about this basic RF oscillator. This basic RF oscillator circuit…