hey folks. hopefully you can help me out. i want a semiconductor that will only switch on at a given voltage. i want to charge a cap and only have it discharge to the load when it has charged to a particular voltage. i've looked into transistors but they seem to start conducting at a much lower voltage than their rated voltage. what product will only switch on at a specific voltage, be it 12v/24v or a 100v? im not a sparky so laymans terminoligy would be great. maybe i need a particular circuit to acheive this? thanks.
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