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Ballast with anti-striation circuit

  • US 8,937,437 B2
  • Filed: 06/13/2013
  • Issued: 01/20/2015
  • Est. Priority Date: 06/13/2013
  • Status: Expired due to Fees
First Claim
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1. A ballast comprising:

  • an inverter circuit to provide an oscillating current signal to energize at least one lamp, wherein the inverter circuit comprises;

    a first switching component having a collector terminal, a base terminal, and an emitter terminal, wherein the first switching component is configured to alternately operate between a conductive state and a non-conductive state;

    a first collector-emitter circuit connected between the collector terminal and the emitter terminal of the first switching component, wherein the first collector-emitter circuit has a first resistance of zero or more Ohms;

    a second switching component having a collector terminal, a base terminal, and an emitter terminal, wherein the second switching component is configured to alternately operate between a conductive state and a non-conductive state; and

    a second collector-emitter circuit connected between the collector terminal and the emitter terminal of the second switching component, wherein the second collector-emitter circuit has a second resistance of zero or more Ohms;

    wherein the first resistance and the second resistance are unequal, and wherein the first collector-emitter circuit comprises a first diode and a first resistive component connected together in series, and wherein the second collector-emitter circuit comprises a second diode and a second resistive component connected together in series, wherein the resistance of the first resistive component is greater than the resistance of the second resistive component.

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