3. If a photodiode were to be used as a sensor, at what point should the anode be? +Vcc R1 SR2 1MO 1k2 Opamp VOUT A R4. R3 1kn Ov b point a point b 9. Why is R4 variable? O to vary the voltage equivalent of light detected Oto vary the output of the op amp to vary the possible reference voltage equivalent of light detected to vary the bias of the op amp

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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8. If a photodiode were to be used as a sensor, at what point should the
anode be?
+Vcc
1MO
R1
R2
1k2
Opamp
a
VOUT
R4
R3
1kn
Ov
b
point a
O point b
9. Why is R4 variable?
to vary the voltage equivalent of light detected
to vary the output of the op amp
to vary the possible reference voltage equivalent of light detected
to vary the bias of the op amp
Transcribed Image Text:8. If a photodiode were to be used as a sensor, at what point should the anode be? +Vcc 1MO R1 R2 1k2 Opamp a VOUT R4 R3 1kn Ov b point a O point b 9. Why is R4 variable? to vary the voltage equivalent of light detected to vary the output of the op amp to vary the possible reference voltage equivalent of light detected to vary the bias of the op amp
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