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bridge type photoelectric detector formed by photosensitive
2016-05-19 02:02
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In the industrial photoelectric measuring device, the photosensitive resistor can form the bridge type photoelectric detector, which is shown in the picture. Two same model (darkness resistance equivalent)photosensitive resistors are used as the bridge arms, one for photoelectric detection, and the other sealed with black tape to avoid light for temperature compensation.This bridge type photoelectric detector can adopt the DC or AC. When using AC modulation, it outputs AC signals to reduced null drift of the amplifier.
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