Hey AAC,
I am stuck with a non inverted operational amp as included below. V1 and V2 are constant voltages and the photo resistor above is from a OSRAM FSH optical sensor. The question is: What will the output voltage be for a given collector current I_c? The collector current is the current trough the photo resistor.
When I leave out this sensor the scheme left is just a non inverted operational amplifier where V_f = ( V_plus  V_min )* (1 + R2/R1) and V_min = V_1 * (R2 / R1 + R2) and V_plus = V_2.
But how can I calculate V_f when the sensor is present?
Regards Max
I am stuck with a non inverted operational amp as included below. V1 and V2 are constant voltages and the photo resistor above is from a OSRAM FSH optical sensor. The question is: What will the output voltage be for a given collector current I_c? The collector current is the current trough the photo resistor.
When I leave out this sensor the scheme left is just a non inverted operational amplifier where V_f = ( V_plus  V_min )* (1 + R2/R1) and V_min = V_1 * (R2 / R1 + R2) and V_plus = V_2.
But how can I calculate V_f when the sensor is present?
Regards Max
Attachments

5.5 KB Views: 49
Last edited: