HP-23A vs HP-23B

[Sorsby, Patti]

Bill, the main difference is that the HP-23A has an adjustable bias supply,
whereas the HP-23B has only fixed bias.

The only other difference I'm aware of is that the HP-23A has somewhat
beefier filament windings than the HP-23B.  As long as you're running Heath
gear this shouldn't be of any concern, and the HP-23, HP-23A, HP-23B and
HP-23C can be considered interchangeable.  However, using an HP-23B to
power a Collins KWM-2 has been disastrous for a few folks who burned up the
power transformer.

I'm working from memory here.  My info is still buried from moving a year
ago, otherwise I'd give you the specifics which I researched two or three
years ago.


Regards,
Bill Sorsby, N5BU
Cedar Rapids, IA

At 11:01 AM 9/7/98 -0400, William Lockwood wrote:
>Hi Gang! Could one of you "Green" experts enlighten me as to the difference
>between the 23A and 23B power supplies (other than the next letter of the
>alphabet) and which one is the more desirable one.
>
>Thanks in advance, Bill
>
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