Re: SSR question

On Thu, 12 Sep 2024 20:09:31 -0000 (UTC), piglet
<erichpwagner@hotmail.com> wrote:

john larkin <JL@gct.com> 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?
 
 

>
I think Piotr Wyderski posted a cool looking circuit using a small hf pulse
transformer as isolation and coupling. Shorting the isolated LV side loaded
or stopped an oscillator or something.
>
The 1960s GE SCR manual showed ways to do that too but using 50/60Hz
transformers which are now not cost effective.

Some people sell a small potted PCB-mount brick that's an AC-line
powered power supply. But I'd have to design a PCB and run line
voltage into it.

Some biggish universal-input metal-box power supplies have a
contact-closure enable input. May as well use one of those, even
thought I only need a few watts.

The product is a high-voltage pulse generator, probably a detonator or
something. We don't know.