Pulse-Generator | Electronic Project Circuits

Posts Tagged ‘Pulse-Generator’

Simple Pulse Generator by IC 555 Timer

This is a simple pulse generator circuit or standard astable oscillator circuit for IC 555 timer,NE555N IC.
Use for digital Logic circuit. IC 555 use voltage supply 5V to 15V.
the output frequency will be approximately 1kHz and the duty cycle 50-50, The output’s frequency is control by R1.
Detail more, Please read in this image circuit.

Be the first to comment - What do you think? Posted by admin - April 24, 2008 at 1:37 pm

Categories: Oscillator generator Tags: 555 astable oscillator, Pulse-Generator, squarewave oscillator

555 timer pulse generator

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.

Simple Square wave Generator by BC549

Three switchable frequencies: 100Hz, 1KHz, 10KHz
1.5V battery operated, minimum parts counting

This simple circuit generates a good and stable 1V peak-to-peak square wave at 100Hz, 1KHz and 10KHz using a single 1.5V cell as power supply.
An useful feature of this circuit is that frequency changes can be obtained by switching only one capacitor at a time.
Current consumption is about 600µA.

Parts:
[...]
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 3 ways Rotary Switch
B1_____________1.5V Battery (AA or AAA cell etc.)

Please read more at the original source: http://www.redcircuits.com//Page74.htm
Thank you.