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Old 05-13-2008, 06:54 PM   #1
efmd3
Scooby Specialist
 
Member#: 120985
Join Date: Jul 2006
Chapter/Region: South East
Location: Greensboro, NC
Vehicle:
2002 Impreza WRX
Midnight Black Pearl

Default Circuit Design help.

I'm trying to build a controller that can take a 0-5V signal and use it to control a 12V motor.

Ideally, I'd like there to be a gain curve where
0V=0V
>~3V=12

but the easiest way to do this would be a simple on off switch controlled by the Input voltage.

with my limited electrical knowledge, I think I am looking for a transistor.

if I wired a variable resistor to the transistor, I should be able to adjust the threshold at which the 12V circuit is opened...right?
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