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Make a Differential Light Meter With an Op Amp

Make a Differential Light Meter With an Op Amp

MAKE - By John Baichtal

Instructables user SarahandDillon made a differential light meter with a TL082 op amp; it compares the readings of two photo sensors. This works in the exact same way as the improved transimpedance amplifier, except that the current flowing out of Vout, through the resistor/capacitor barrier, to V- …

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