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power inverter

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dstich

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i need to know if there is a way to invert a curent so if there is power coming through the triger it wont open and if there is not the triger is open
 
hi,

ususaly to do that you have to use an op-amp (operational amplifier)
or if there is some mechanical motion in your device, there are special switches that will close the circuit(let the current pass in a certain direction) if pressed or released.

i did something kind of similar (if i understand what you mean), listen:
i made a device that when a light beam is cutten from a photo-cell (light sensor) a LED will glow. i made this using an op-amp that will invert the current pathing through the LED. (switching the inverting and non-inverting positions so i get the results needed).

if you need more help on op-amps, tell me.
 
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