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Mystery Cap in an early (two 45s) Model 90
#5

It's interesting to note that this cap is missing on Ron's drawing.  It looks like an rf bypass cap for the b+ voltage on the plate circuits. (the D circuit) With the poor drawing quality it's hard to be sure . It probably is not critical and was added as a precaution to keep rf off that line. I would think a value of .1 to .47uf was used.

!!!!!!!!!!!!!!!!!!!RESISTANCE IS FUTILE!!!!!!!!!!!!!!!!!!!!!!  
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                                 [Image: http://philcoradio.com/phorum/images/smi...on_eek.gif]  Chris


Messages In This Thread
RE: Mystery Cap in an early (two 45s) Model 90 - by OZ4 - 04-01-2016, 12:26 PM



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