×

Automatic level control

  • US 8,004,354 B1
  • Filed: 02/12/2010
  • Issued: 08/23/2011
  • Est. Priority Date: 02/12/2010
  • Status: Active Grant
First Claim
Patent Images

1. A circuit comprising:

  • a high voltage transistor providing a resistance;

    an amplifier configured to receive a current and to convert the current to a first voltage that is used in a loop creating the current; and

    an automatic level control circuit that, based on an AC amplitude of the first voltage, adjusts a second voltage at a gate of the high voltage transistor and thereby adjusts the resistance and the first voltage;

    wherein the automatic level control circuit is configured to adjust the first voltage toward the first reference voltage if the first voltage differs from a first reference voltage.

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