C Circuit for Single Coil Latching Relay - Push button

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02:26:43

Single Push Button - "C" Circuit for Single Coil Latching Relays

Use a single coil latching relay without a separate negative rail to trigger the coil in reverse. Use reverse output from a capacitor instead.

Here, an On-On DPDT push button is used.
Debouncing might be advantageous.

Capacitor value:
L is coil inductance and R is coil resistance
C > ( 4*L ) / ( R^2 )

Relay in simulation isn't latching but the coil is bipolar.

published 1 year ago

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