Circuit Project Electronic

This is a simple pulse generator circuit with IC 555 timer. Use for digital Logic circuit. IC 555 use voltage supply 5V to 15V. The output’s frequency is control by R1. Detail more, Please read in this image circuit. Related Links More Circuit about Oscillator Generator More circuit by IC 555 More circuit about Pulse [...]

To drive ignition coils is to use a 555 timer pulse generator. A 555 generates a square wave output that triggers the 2N3055. Adjusting the two potentiometers and the value of the capacitor will change the frequency of the output. Read More Source: http://www.geocities.com/mistertippy/schematics/ignition.html Thank you. Related Links More circuit 555 timer oscillator More oscillator [...]

Three switchable frequencies: 100Hz, 1KHz, 10KHz 1.5V battery operated, minimum parts counting Parts: R1____________560K 1/4W Resistor R2____________680R 1/4W Resistor R3______________2K2 1/4W Resistor R4____________150K 1/4W Resistor C1_____________12nF 63V Polyester Capacitor C2______________1n2 63V Polyester Capacitor C3____________120pF 63V Polystyrene or ceramic Capacitor C4,C5__________10µF 25V Electrolytic Capacitors Q1,Q2________BC549C 25V 100mA NPN High-gain Low-noise Transistors SW1____________SPST Slider Switch SW2____________1 pole [...]