To prevent such an action, the diode and resistor are added to provide the following.
Vp2 - Vr2 = Ve
© pin
potential
Preset H
High
colour
temprature
R-Y
B-Y
L
M
Sen
Preset H
@ pin
High colour temprature
potential
Figure 6-2 (j}. White Balance Control Voltage Characteristics
. White balance control
40