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E Meter/GSR Meter/Lie Detector

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Tronikid

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Does anyone have circuit diagrams/schematics for E Meters/GSR Meters/Lie Detectors?

The devices I'm interested in use something like a wien bridge circuit that nulls itself after a few seconds to compensate for changes in measured resistance, driving a centre zero meter.
 
this is the best ive got. try going to google and then type in 7000 circuits. it will pull up a website that i think is called discover circuits or somethin like that. if u dont like mine, im sure that theyll have 1 there.
 

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