Electrical – Soft-latch auto-reset OFF (hold) / ON (press) button, is the schematic correct

buttonlatchswitches

I'm looking to make a soft-latching interface with a single momentary push button.

Required features for my build are (edited, sorry for bad description) :

  • Circuit should always start in OFF position (hence auto reset) ;

  • Should work as press to power ON, hold to shut down ;

  • Must be compatible up to 60V ;

  • Must be able carry the battery's nominal voltage to the module it switches ON and OFF (said module needs high voltage to go HIGH else it stays LOW)

Can you please tell me if anything is wrong ? How should I solve it ?

Thanks

Edit (2) : For the 5v regulator I use a LM317HVT with a pair of resistors. NAND used is a CD4011 and mosfet used to switch ON/OFF is an irf510.

Soft-latch switch with momentary push button LM317HVT based

Best Answer

This "analogic" circuit simply delays switch contact >0.5s and debounces the switch. There are far simpler ways to do this with a single RC filter and Schmitt trigger gate.

There is no latch.

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