Awhile ago, I posted an example of a Power toggle circuit using a handful of components that I  use all the time to allow a momentary switch to control Power On/Off function. https://circuitsalad.com/2014/04/12/simple-momentary-switch-latching-circuit/ The circuit works well but can require a series diode with the output to prevent  stored charge or magnetic energy from re-energizing the … Continue reading Improved Power Toggle Latching Circuit