Hi, pretty much a total noob here so please bear with me.
I like learning new stuff, and get the most benefit with little hands on experience. With the encouragement of my wife I started down the diy audio path. Found I really enjoyed soldering stuff together and learned a little in the process. Attached is a circuit that operates a power relay for an audio amplifier ( and has a thermal cut-out in case it over heats ) The circuit is controlled by a NO momentary switch. This is built and operates as it should. What I really really want to do is replace the NO momentary switch in the circuit with the langir piezo switch and am looking for the simplest most reliable way to do this. If I wire the piezo switch into this circuit, the piezo can power off the circuit, but it will not turn it on. I have tried the piezo on other circuits that require momentary contact and it does work but I suspect that is because the other circuit pushes like 12 volts across the piezo. I have read about using a piezo with an FET or using an op amp to make the piezo behave like a momentary contact switch. Do you see any way to possibly change some of the resistor or capacitor values that would allow the attached circuit to function with the piezo switch? Trying to keep it simple yet at the same time reliable. Much thanks!
I like learning new stuff, and get the most benefit with little hands on experience. With the encouragement of my wife I started down the diy audio path. Found I really enjoyed soldering stuff together and learned a little in the process. Attached is a circuit that operates a power relay for an audio amplifier ( and has a thermal cut-out in case it over heats ) The circuit is controlled by a NO momentary switch. This is built and operates as it should. What I really really want to do is replace the NO momentary switch in the circuit with the langir piezo switch and am looking for the simplest most reliable way to do this. If I wire the piezo switch into this circuit, the piezo can power off the circuit, but it will not turn it on. I have tried the piezo on other circuits that require momentary contact and it does work but I suspect that is because the other circuit pushes like 12 volts across the piezo. I have read about using a piezo with an FET or using an op amp to make the piezo behave like a momentary contact switch. Do you see any way to possibly change some of the resistor or capacitor values that would allow the attached circuit to function with the piezo switch? Trying to keep it simple yet at the same time reliable. Much thanks!
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