Lithium Battery Charger

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

55 years ago

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_____________…

55 years ago

25W Low Power Inverter

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

55 years ago

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…

55 years ago

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…

55 years ago

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…

55 years ago

Wailing Alarm Siren

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

55 years ago

12VDC to 9VDC Converter

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

55 years ago

Basic RF Oscillator

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

55 years ago