Surge protection circuit for power supplies
The surge protection circuit important! Sometimes, our electrical appliances may damage easily by little high voltage surges. We can protect this problem. Read more
FM wireless microphone circuit diagram
This is a FM Wireless Microphone circuit Which we add one transistor in the RF amplifier. So this circuit have two resonance circuits and also two trimmers. This cause have Higher efficiency and transmission far up. Read more
Rat and Cockroach Repellent Circuit Using Astable Multivibrator
The Mouse and Rat repellent circuit using astable multivibrator which use sound waves or ultrasonic so it escaped away. Use transistor and piezoelectric. Read more
Solid State Relay circuit
The special Relay that used replace normally relay, very fast contact load, low voltage input 3V to 24V only Read more
Cricket Sound Generator Circuit
This cricket sound generator circuit uses the LM324 OP-AMP as a frequency generator and a buzzer to emit sound without using ROMs. Read more