Philco model 18 (code 121) - HELP!
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I think Arran means #40, the triple electrolytics 1uf / 1uF / 2uF.
One 1uF is in parallel with the wirewound resistor 6.5K, which is in series with the speaker's field coil.
Another 1uF is T-filtering plate load for tube 75 (second detector).
And the 2uF is T-filtering with R61/R62 (right from the Filter choke rectifier's output).
All these can be plain non-electrolytic caps. With proper voltages of course.
Then you do not care about the polarity.
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RE: Philco model 18 (code 121) - HELP! - by morzh - 02-09-2013, 02:21 PM
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