| 摘要 |
<p>PHN. 8969. 18-4-1978. : A television camera comprising a control and setting stage for the beam current control of an electron beam in a pick-up tube. Via an substantially video frequency picture signal amplifier suitable for supplying the picture signal over substantially the entire amplitude range over which the pick-up tube generates the picture signal, via a coupling capacitor the picture signal generated by the pick-up tube is superimposed as a control voltage on the setting voltage for the control electrode of the pick-up tube. A stable beam current control without oscillations is the result.</p> |
