×

Amplitude control system

  • US 4,481,462 A
  • Filed: 11/24/1982
  • Issued: 11/06/1984
  • Est. Priority Date: 12/17/1981
  • Status: Expired due to Term
First Claim
Patent Images

1. An amplitude control system comprising, a series arrangement of a resistor and an amplifier connected between an input and an output of the system, means connecting an input of the amplifier to a point of constant potential via the main current path of a transistor, means connecting a control electrode of the transistor to an integrator and to the output of the control system via a control loop, wherein the control loop comprises a current source connected to the control electrode of the transistor via a first switching element and also being connected to a point of constant potential via a second switching element, means connecting the output of the system to one input of a comparator whose other input is connected to a source of reference voltage, the output voltage of the comparator controlling the first and second switching elements such that the first switching element is closed and the second switching element is opened when the voltage on the one input of the comparator is higher than the voltage on the other input, the first switching element being opened and the second switching element being closed when the voltage on the one input of the comparator is lower than the voltage of the other input.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×