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Latching SPST on-off switch

Switch (Toggle, Rocker and DIP) Basic Circuit

Build a basic Switch (Toggle, Rocker and DIP) circuit with labeled pins, component values and connection guidance.

Package view

12 V supply, the toggle switch in the positive wire, a 12 V 0.5 A lamp and the return to the negative terminal; ON lights the lamp, OFF leaves it dead. — Switch the positive feed so the load is dead when off.

Connect it, step by step

Follow the component values and pin connections

Positive feed

Put the switch between the supply’s positive terminal and the load.

Choose by load

0.5 A at 12 V suits the toggle or rocker, never the DIP switch.

Logic instead

For a mode input: switch to ground, pull-up to the supply, 50 mA is plenty.