[GreenKeys] 28 loop supply transformer

Roy Morgan k1lky68 at gmail.com
Sun Dec 28 18:00:19 EST 2014


On Dec 28, 2014, at 2:34 PM, Jim Haynes <jhhaynes at earthlink.net> wrote:

> On Sun, 28 Dec 2014, WA5CAB--- via GreenKeys wrote:
> 
>> footprint area in the design but it's my guess that that's what happened
>> here.  The magnetic flux density in the core doesn't much care what the
> 
> Yes, there was plenty of headroom in the M28 electrical service unit,
> but width was at a premium.  So the 500ma supply was made to fit in the
> same size space as the original 120ma supply.

I wonder which supply I have here at hand - I suspect the smaller one:

Marked: 

152950 ASSEM.

Transformer is marked:
176495
549-6620
Lamantations 2-1/4 by 2-5/8 by 15/16 tall.

Capacitor: 220 MFD 200 V.D.C.W.

It has two top-hat diodes in a full wave bridge circuit.

Is this the 120 ma supply?

Roy

Roy Morgan
RoyMorgan at alum.mit.edu
K1LKY Since 1958



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