| 摘要 |
PURPOSE: To prevent drifts, permissible errors, and deterioration of a constituent element related to temperature from exerting influence op an output signal OUT. CONSTITUTION: An analog multiplier 110 which operates as a modulator multiplies a saw-tooth wave signal HSAW of horizontal frequency by the parabola signal VPAL1 of a vertical frequency and generates a saw-tool wave output signal OUT, which varies according to the product of momentary values of signals V23 and V15. The output signal OUT is passed through a potentiometer 121, an amplifier 120, and a power amplifier 123 to generate a convergence current iCV. The output signal OUT is coupled with a means 100, including differential amplifiers Q19 and Q20 and a means 100 generates an adjustment signal VCAL coupled with a pin 2 of the multiplier 110. |
