Product specifications

Instrumentation Laboratory Exercise 41
Laboratory Exercise #4 Test Report NAME:______________________________
Measure the static dark voltage of the CdS cell circuit: V
dark
= __________
Measure the static light voltage of the circuit: V
light
= __________
Calculate the expected peak-to-peak voltage for low frequencies: V
p-p
= __________
At what frequency does Vp-p drop to less than 50% of the static value: Freq. = __________
What frequency do the fluorescent lamps flicker at? Flicker = __________ Hz
Call the technician and have him verify your setup:
Technician Check
Questions
What is the cut-off frequency of this CdS cell (the frequency at which the output drops by 3 dB)?
What is the frequency of the AC voltage (line frequency) driving the fluorescent lamps?
Why is the flicker frequency different from the AC line frequency?