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trigger momentary switch/button via switch Answered

what i try to accomplish is very simple.

my Airconditioner has a Push button (momentary switch) to turn it off and on.
but the Thermostat brings permanent power it it want the A/C to be on.

i could make a simple delay setup for 1 sec. or so to trigger a relay but then i can't be sure its really on or of.
how can i ensure its turned on via an timer relay safely if the control wire has power ?

any recomentation on existing products or schematics ?

i can check the "real status" via other parts on the airconditioner easy .. i just need a way to ensure ON and OFF based on the command line is High or Low .. 

any ideas ? 

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gmoon

4 years ago

I'm afraid from your description, I'm not certain what you're asking--but here goes...

From this: "i just need a way to ensure ON and OFF based on the command line is High or Low" I'm guessing you know which is the command line wire already? And the voltages, etc., internal for your AC controller?

If so, then any high impedance digital logic chip (for instance, a CMOS inverter or buffer) should work.