[Kenwood] TS-930: 2N5885 Power Supply Transistors

Dr. Gerald N. Johnson, electrical engineer [email protected]
Mon, 08 Sep 2003 09:12:25 -0500


Any reputable paralleled regulator design should have emitter resistors,
probably fraction of an ohm, to push the transistors to share the load
current including temperature effects. Matched pairs do make the sharing
better but the resistors should take care of that sharing. Matched pair
transistors generally aren't sold, but wouldn't cause current sharing
nearly as well as adequate emitter resistors. There ought to be between
1/2 and 1 volt of drop in those resistors at full load.

73, Jerry, K0CQ

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