Re: SSR question

On 2024-09-11 8:08 p.m., john larkin wrote:

 Given a power supply that needs 120 volts AC input, I'd like to use a
small front-panel power switch at some low voltage, not run the AC
line up to the front panel.
 Do people make SSRs that would do that, accept a low-voltage switch
closure to switch AC?
 

Sure, there are the TRAIC SSR bricks that take 4 to 32VDC to switch - and can handle tens of amps.
https://www.digikey.ca/en/products/filter/solid-state-relays-ssr/183?s=N4IgTCBcDaIIIGEAEAXATgSwIYGMQF0BfIA
And also the opto-isolated TRAICs like the MOC302x family from Lite-On.
Of course you need some power to enable that stuff to run - perhaps a capacitor/resistor driven supply that sucks a tiny amount of current from the power line to enable the drive circuit?
John :-#)#
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