Light Flasher (Blinking Lights)

This is a very basic circuit for flashing one or more LEDS and also to alternately flash one or mo...

Increase Regulator Voltage Output

It is often necessary to arrange an voltage regulator IC to give a higher output voltage than that...

3V electronic stun gun circuit

This circuit above is a cheap version stun gun circuit that is powered by two AA baterry. The outp...

9V to 13.5kV Inverter Circuit

This high voltage source is formed by an inverter, around the transistor, which provides pulses of...

50W-70W Power Amplifier with 2N3055 & MJ2955

This good detail both circuit diagram ,PCB,part assembly,layout and show case in completed set that...

Stereo 80Watt Audio Amplifier TDA7294

The described circuit uses two TDA7294 for use in stereo (2 x 80 watts) and bridge mode (1x 180 wa...

Class-A Headphone Amplifier Circuit

400mW RMS into 32 Ohm load, Single-rail Supply - Optional Tilt Control This design is derived fro...

Pushbutton Relay Selector Circuit

This circuit was designed for use in a hifi showroom, where a choice of speakers could be connecte...

Timer Garage Door Circuit

Because I’m old school, I wanted to build a Garage Door Closing circuit without relying on integra...

Electronic Fuse for DC Short Circuit Protection

This is an electronic fuse that protects the load against short circuit. Relays must be chosen wit...

Super Boost USB Charger Circuit

This design is inspired by the Minty Boost but it fixes some of the issues that I had with it. The ...