As suggested, I am posting a new thread to an earlier one from tonight.
Attached is a schematic of a time delay circuit that is activated by a pushbutton switch. I am looking for a way to activate this circuit from the the output of a different circuit. I was thinking of using an NPN transistor and another member mentioned using a Mosfet IRF540. Another member replied that neither of these would work in my situation.
The circuit that I would like to use to trigger the time delay circuit is a commercially built current sensing detectors output, which is (-) negative 12 VDC. The output configuration is a push-pull and can sink and source current and has a maximum output of 400 ma.
So what I'm hoping for is if someone can tell me what kind and size of device I could use to trigger the time delay circuit and what leads would get wired to what on my two circuits to accomplish this.
Thanks again, for any help and advice.
Circuit Breaker
Attached is a schematic of a time delay circuit that is activated by a pushbutton switch. I am looking for a way to activate this circuit from the the output of a different circuit. I was thinking of using an NPN transistor and another member mentioned using a Mosfet IRF540. Another member replied that neither of these would work in my situation.
The circuit that I would like to use to trigger the time delay circuit is a commercially built current sensing detectors output, which is (-) negative 12 VDC. The output configuration is a push-pull and can sink and source current and has a maximum output of 400 ma.
So what I'm hoping for is if someone can tell me what kind and size of device I could use to trigger the time delay circuit and what leads would get wired to what on my two circuits to accomplish this.
Thanks again, for any help and advice.
Circuit Breaker
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