[R-390] Question to post

[Sheldon Daitch]

A few non-electronic guesses, 

1 - two 1 mfd caps were cheaper than a 2 mfd?

2 - a shelf full of 1 mfd caps on hand?

3 - the two parallel caps had a lower impedance?
   (oops, that was an electronics answer!)

73
Sheldon
WA4MZZ



Jack Sullivan wrote:
> 
> My Collins R390 (not "A" version), on I.F. deck, has
> two top chassis mounted OIL FILLED condensors, side by
> side, 1 mf-400 volts each, hooked in parallel, giving
> 2 mf 400 volts.  They are a coupling to AGC circuit.
> Why in the world did Collins design two such
> condensors to be wired in parallel, rather than just
> installing one 2 mf-400 v. condensor, was it, perhaps
> because a larger 2 mf. wouldn't fit in spot on chassis
> top, or could it have been that they just didn't have
> available to them at time 2 mf cond. needed?  Best,  Jack
> 

>