Servo amplifier for television camera lens

Details Servo amplifier for television camera lens Servo amplifier for television camera lens

1982-02-26

1983-11-22

Murray, Richard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358228, H04N 526

Patent

active

044172800

ABSTRACT:
A servo amplifier for a television camera lens for driving a servomotor to control a zooming, focusing and/or iris control is connected with a power source by way of a current limiter to prevent a voltage drop caused by a rush current. The servo amplifier is composed of a pre-amplifier and a power amplifier, in which the power amplifier is supplied with a power by way of the current limiter. The current limiter is composed of a transistor, a zener diode and resistors, and operates to limit the level of the electric current flowing therethrough.

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