| 摘要 |
Vertical deflection circuit for television receivers which includes a circuit arrangement for generating a saw-tooth control signal and an audio amplifier for driving the deflection coils. The input stage of the audio amplifier includes an inverting input a non-inverting input, with the saw-tooth control signal being applied to the non-inverting input. A negative feedback signal proportional to the current through the deflection coils is applied to the inverting input of the amplifier thereby effecting a significant increase in the internal resistance of the amplifier. Consequently, the internal resistance of the amplifier presents virtually no damping resistance across the deflection coils during the vertical flyback period, so that the maximum amplitude of the deflection signal can closely approach the value of the available supply voltage to the amplifier.
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