VT33N3 PERKINELMER [PerkinElmer Optoelectronics], VT33N3 Datasheet - Page 63

• Manufacturer Part Number: VT33N3
• Description: Photoconductive Cells and Analog Optoisolators (Vactrols)
• Manufacturer: PERKINELMER [PerkinElmer Optoelectronics]

Application Notes—Analog Optical Isolators
Basic Circuit Configuration
Figure 1c. Feedback Resistor Control
Figure 1b. Series Input Control
Figure 1a. Shunt Input Control
58
Resistance
Fixed, Low
Variable
Variable
Input
------------------------------------------- -
1
R
R
3
Gain
-------------------------- -
R
-------------------------- -
R
LDR
R
1
1
R
LDR
+
+
+
R
LDR
R
R
1
R
e
---------- -
+
e
o ut
LDR
LDR
in
2
R
+
2
R
3