Analog Flip-Flop circuit diagram

Here the analog flip-flop which built based on 2 transistors work as switch. This is very easy made and very cheap circuit. You can use this circuit as “the first project” for your students…

Basic Analog Flip Flop Schematics diagram

and the result should be like this:

Replace the Resistor 10K with variable resistor 20K or replace the electrolytic capacitor 100uF with other value for change the frequency of LED’s flash.

Flip flop PCB layout:

Flip Flop Schematics

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2 responses to “Analog Flip-Flop”

Electronic Circuit says:

June 30, 2009 at 10:22 am

It’s so easy and funny electronic circuit.Thanks for your share. I will try it with 7 led.
Arnold says:

August 1, 2010 at 4:50 am

You can replace the resistor (470R) and the led with an relay (including a diode!).
that way you can switch about anything you’re mind can think off.