How to make a Laser alarm security circuit on breadboard (Step by step tutorial)
Let's make simple laser alarm security circuit. This circuit is very easy.
Materials : Breadboard, Laser pointer (From laser ballpoint pen), CDS, 2n7000(FET), BT169(SCR) 6.8kΩ Resistor, 5V buzzer, LED, 100Ω Resistor, 16V 1μF Electrolytic capacitor.
This clip offers momentary mode or continuous mode circuit.