Essays Tagged: "SCR"
Digital Security System
, a quad dual-input OR gate, and an inverter. When the correct combination is entered it triggers a SCR that in turn triggers a relay, making the power turn on in the computer. If the wrong combinatio ... , making the power turn on in the computer. If the wrong combination is entered it triggers another SCR that triggers a relay controlled alarm circuit giving power to a piezo buzzer emitting an alarm ...
Subjects: Science Essays > Chemistry