Sunday, May 29, 2016

Relay Circuits

Momentary Relay Activation Circuit



The relay will energize momentarily until the capacitor is fully (or partially) charged.



The relay coil produces brief high-voltage spikes when switched off. These voltage spikes can destroy transistors and ICs in the circuit. To prevent damage, a protection diode must be placed across the relay.

Power ON/OFF Control with Push button (Ref: TI Application Report)

  This simple push-button circuit allows a system to turn on with a short button press and turn off when the button is held down. Essentiall...