[GreenKeys] Repurposiong an RA-87 Rectifier

[Paul Birkel]

Example: https://radionerds.com/index.php/RA-87 

 

It's documented in:
https://radionerds.com/images/6/69/TM_11-5815-270-15_Operator_Organizational
_Field_and_Depot(
<https://radionerds.com/images/6/69/TM_11-5815-270-15_Operator_Organizationa
l_Field_and_Depot(%0d1).pdf> 

1).pdf
<https://radionerds.com/images/6/69/TM_11-5815-270-15_Operator_Organizationa
l_Field_and_Depot(%0d1).pdf>   (see Figure 7 - page 42 of 70 - for the
schematic, and Figure 8 for the wiring diagram)

 

My REC-11 serves its design-intent as my main loop-supply just fine!

 

Given that my RA-87 is in not-great condition I've been thinking of
repurposing as (1) a line isolation transformer, and (2) an "up converter"
with fixed voltage taps at 95, 105, 115, 125, 190, 210, 230 and 250 VAC.  I
have a modest Variac (autotransformer) for continuous fiddling, but only
down-voltage and non-isolated (of course).  Several decades ago I had a nice
line-isolation transformer for TV servicing work but somehow I lost it along
the way :-<.

 

This repurposing is a bit sacrilegious, I know.  I'd be flipping the primary
and secondary windings and removing the DC circuitry.  All components could
be left-in-place; just completely rewired.  At 600 watts (AC+DC; it's
actually fused 15A 230V input but only 0.5A time-delay DC output) it's a
boat-anchor beast that could get a new lease on life under my electrical /
electronic workbench.  It's not clear to me whether the 0.5A limitation is
intrinsic to the gauge of the secondary winding or some other factor
(rectifiers or choke).  Before I explore further .

 

Would I be worthy of a barrage of rotten fruit should I go down this path?
Other comments?

 

paul

 

 

 

 

 

 

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