1.5 Watt FM Transmitter

55 years ago

This is a simple, well designed 1.5 Watt FM Transmitter circuit using power transistor 2N2219A. This circuit should be able…

Sound Effects Generator (8 different sound) based IC HT2884

55 years ago

This is the circuit diagram of sound effects generator. All sounds in this circuit are generated by HT2884. The HT2884…

Electronic Bird Chirp Sound Generator

55 years ago

This is electronic bird chirp sound generator circuit which used to produce a sound like bird's chirp. The transformer is…

Electronic Siren

55 years ago

This is Electronic Siren circuit diagram which use standard discrete components. The sound produced imitates the rise and fall of…

Portable Audio Amplifier

55 years ago

This is simple portable audio amplifier circuit. This circuit built based on IC TEA2025 which is a monolithic integrated audio…

6V to 12V DC to DC Voltage Converter

55 years ago

This is the circuit diagram of 6V to 12V DC to DC voltage converter (6V to 12V DC voltage doubler).…

NiCd – NiMH Battery Charger

55 years ago

Here is the simple and low cost NiCd and NiMH battery charger circuit which can be used for various battery…

100W RMS Audio Amplifier

55 years ago

Here is the 100W RMS audio amplifier schematic diagram: This circuit is quite simple but will give you high quality…

2 Watt Mini Audio Amplifier

55 years ago

This is the circuit diagram of 2 Watt mini audio amplifier. This circuit is inexpensive, easy and quite simple. This…

LED Flashing Heart

55 years ago

This is the LED flashing circuit, since the shape used in this circuit was hearth shape, then we call it…