This Video Show You "How To Make A Simple Circuit Using A Relay"
It Will Also Tell You "What Is A Relay? & What Is It Used For?"
The Things You Need Are:
*10K Ohm Resistor
*LED (Light Emitting Diode) (x2)
*9V Battery Clip
*6V Power Supply (If you don't have one, you can use another 9V Battery along with a 7806 Regulator)
*Switch (Single Pole Single Throw)
This Is the Link to the Circuit Diagram From:
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