Busbars for electrically powered cells

  • US 6,449,082 B1
  • Filed: 09/20/2001
  • Issued: 09/10/2002
  • Est. Priority Date: 07/02/1998
  • Status: Expired due to Fees
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First Claim
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1. A method to control an electrochromic device having a light transmission property that responds to a physical or chemical effect, wherein the light transmission property changes in response to an electrical signal, wherein said method comprises the step of:

  • intermittently applying the electrical signal by controlling the on duration t1 and the off duration t2 of the electrical signal individually, in response to the physical or chemical effect, effective to maintain the light transmission property within a range of about 1% to about 10% of a predetermined value of said light transmission property.

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