If a light switch is wired wrongly then ashort circuitmay occur or the switch will not work properly. If this switch wiring creates a short circuit, then the switch gets damaged so these errors can lead to fire, electric shock, etc. Why do we use electric switches? An electric switch is...
1. Change motor direction with DPDT relay As you can see in the schematic the 12V battery (or use other voltages) is connected with the plus at terminal T1 and minus at terminal T2. The contact 1 and 4 are connected together as 2 and 3 are too. Without voltage applied to the coil ...