Day 3: Switches and Relays

 Fig 3.1

1.Here, a circuit with two switches were set up in forming an OR logic gate. The operation of either switch would toggle the LED's on or off state.

Fig 3.2

2. A relay circuit was created. A relay is made up of two switches that's controlled magnetically by an inductor coil that induces a voltage when a changing current is passed through it. This changing magnetic field is created by the introduction of a pushbutton switch into the circuit. When the button is pressed, this closes the circuit and current begins flowing. This change in current produces a magnetic field in the inductor that mechanically flips a switch in the relay, and thus toggling the LEDs.