Method and apparatus for controlling the temperature of a multi-parameter light

  • US 6,621,239 B1
  • Filed: 03/14/2000
  • Issued: 09/16/2003
  • Est. Priority Date: 03/14/2000
  • Status: Expired due to Term
First Claim
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1. A multi-parameter theatre light comprising:

  • a housing;

    a variable power supply having an output and a control input;

    a lamp contained at least in part within the housing and coupled to the output of the variable power supply;

    a theatre light parameter actuator contained at least in part within the housing;

    a thermal sensor contained within the housing; and

    a control circuit having an input coupled to the thermal sensor and an output coupled to the input of the variable power supply for controlling power to the lamp during operation as a function of input from the thermal sensor;

    wherein the variable power supply is an IGBT power supply and the lamp is an arc lamp.

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