hangtime21
Newbie level 1
We need to make a switching circuit. It involves a piezoelectric material charging a series of capacitors. When the capacitors reach 12v or more the switch would turn on to the charge controller. The charge controller needs 12v to work. We've tried some fets with voltage divider from the charged capacitors going to the drain and gate but couldn't get it right. What happens is the output voltage goes up as the input voltage to the gate goes up rather than a surge of voltage at a certain Vin.
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