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Palomar 900HD w/4 2879's new 2010. Now it runs on 28v; Bias circuit reworked: Fused regulator LM7815 takes 28 to 15v then LT1003 (TO-3 case) regulator drops it to 1.8 where V divider sets 3v Bias. Current demands appreciably less than original 4x 2879
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