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Old 11-28-2013, 12:37 AM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
  
Join Date: Jan 2011
Location: WI
Posts: 3,976
This Zenith patent description is an interesting read on the common problem and the circuit designed to cure it.

http://www.google.com/patents/US3855496
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