Sujet : Re: SSR question
De : alien (at) *nospam* comet.invalid (Jan Panteltje)
Groupes : sci.electronics.designDate : 12. Sep 2024, 07:30:40
Autres entêtes
Message-ID : <vbu1qh$4sn6$1@solani.org>
References : 1 2
User-Agent : NewsFleX-1.5.7.5 (Linux-5.15.32-v7l+)
On a sunny day (Wed, 11 Sep 2024 21:55:57 -0700) it happened John Robertson
<
jrr@flippers.com> wrote in <
vbts8t$33cq$1@dont-email.me>:
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?
Opto-triac, powered from a photo-cell connected to a small coin type battery like for SRAM backup?
Of course impulse switch, nano amps CMOS D flip flop..
Have some Microchip PIC single button on/off stuff like that,