It is a TFF made out of bipolar transistors. First hit the power switch for "solution"(one way switch), then hit the two way switch as a button("on" and "off") for a "clock", the LED(output) Turns "on", then the next time it turns "off". Watch out! It takes a while to show the results of the LED. Please use patients. Warning-you have anxiety problems don't use this circuit.
