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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Technically it's the more voltage you put in a transistor, but yeah.
I'm pretty confident on using an FET now, but now I can't seem to find one with a gate that has a maximum voltage high enough, as the sensor can produce over 70V in certain situations... Grr...
That's actually what I was thinking at first, but for some reason I was convinced it wouldn't work properly.
edit: Yeah, I'm leaning towards an FET now. If I understand this correctly, I can use one in "linear mode" to act as a variable resistor, right?
Hi,
I know the basic way the circuit should work, but I'm not very familiar with all the components out there. (So many!)
Basically, I'm trying to have an LED turn on whenever a vibration sensor (piezoelectric film) produces a voltage, however I don't just want it to be a simple on/off...
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