Circuit Project Electronic

That be On After Delay Circuit. I uses mosfet in the circuit for delay easy more than the transistor. By have the work of the circuit be when press , S1 , an electric bell will not loud suddenly , must wait for follow the period of time that note. [...]

At this period the economy not good, Make have steal plentiful. We come to try build the circuit steal model to is simple better. The Alarm Sound (Super Bell) loud forever until will cut power supply to go out. When the Switch of the magnet Senate was opened or [...]

This be Mini high voltage generator at my friend wants. Because of use the transistor 2 pcs only just,build small-sized easy good. By this circuit gives pulse Generator 220V from 9V batteries and Give pulse voltage tall arrive at 170V from the 1 dry piece cell(Batt 1.5V) we should [...]