Description
The CA3224E is an automatic picture tube bias control circuit used in color TV receiver CRT drive circuits. It is used to provide dynamic bias control of the grey scale both initially and over the CRT operating life, compensating for CRT cutoff changes.

FEATUREs
• Automatic Picture Tube Bias Cutoff Control
• Automatic Background Color Balance
• Eliminates Grey Scale Adjustments
• Compensates for Cathode-to-Heater Leakage
• Electrostatic Protection on All Pins
• Servo Loop Design
• Wide Dynamic Range
• Three-Gun Control
• Minimal External Components