coll circuit

A small electronic switch that connects a battery to the equipment for a certain amount of time when a push-button is momentarily pressed. A...

This High Voltage Geiger Counter Supply Circuit Diagram will generate about 300 volts dc —at a very low current, but enough for a GM tube...

At night, parking lights make your parked car visible to motorists so they don’t smash into your car. However, these lights drain considerab...

Depending on local regulations and the telephone company you happen to be connected to, the voltage on a free telephone line can be anything...

The shell design of mobile phone jammer is unique. RF chip: Due to the different design ideas for mobile phone manufacturers as part of usin...