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Inverter circuit using CD4047

Inverter circuit using CD4047 12V DC to 220V 100W Inverter

Anti mosquito electronic circuits

Anti mosquito electronic circuits “Anti mosquito electronic circuits” anti mosquito circuit layout Here is a picture of “anti mosquito electronic circuits” , The ultrasonic is based on the theory that insects, such as mosquitoes can be rejected by using ultrasonic sound frequency range 20kHz. electronic anti mosquito is a mosquito repellent device, by using ultrasonic […]

Making gameboy systems circuit

Making Gameboy systems circuit

EPROM burner card circuit diagram

EPROM progrogramer does NOT use any device to output a voltage to the PC printer port, only a current sink. All inputs from the printer port are buffered. In this way there is little or no possibility of damage to the printer port, even with most wiring error possibilties during construction. This EPROM burner will […]

How to Make Electronic Circuits to drive the rats, mosquitoes and other animals

This circuit functions with inaudible (ultrasonic) sound. Frequency to 20 kHz sound was heard by humans. The sound frequencies above 20 kHz is called ultrasonic sound. Described a series of produce (emit) ultrasonic sound frequencies between 40 and 50 kHz. Like the remote control system is also cirucit consists of a mini transmitter and receiver […]

loudspeaker protection circuit

loudspeaker protection circuit and Muting Circuit using BC546 BC549 Relay

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