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6TPZ and 5TPO Radio Help
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| On K2, pins 1&2 are shorted. On K4, Pins 1&3 are shorted. Others are OK.
The voltages are the same except #4....R3Sons — 09:29 PM |
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Philco 40-120C Filament Wiring
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| Let's try to sort it out. So we are working with the same info here's the schematic I have:
...and here's the pin o...klondike98 — 09:03 PM |
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Philco 630csx power cord
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| I posted this on FB but knowing that not all of us use social media, it seemed sensible to ask my question here.
I r...Tynwald — 08:07 PM |
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Philco 40-155
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| At last, got this working well. Impressed has really nice reception and tone. Had a bad connection on one of the capaci...rogerh — 07:44 PM |
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Philco 91 Restore Code ??
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| Or you could just square the current :lol:
As for the values, they are dependent on the 1 or 2-speaker system.
The...morzh — 05:46 PM |
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Philco 91 Restore Code ??
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| If you know the fc resistance you can use 120 ma nominal current through the resistor to get the voltage drop then calcu...RodB — 05:21 PM |
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Philco 91 Restore Code ??
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| Thanks Mike. I at least know why it is there if I don't fully understand it. I see where you talk about a cap and resist...dconant — 04:49 PM |
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Philco 91 Restore Code ??
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| Well, this cap you showed cannot possibly, due to the way it is constructed, be 1000pF (0.001).
It can be in tens of pF....morzh — 03:13 PM |
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Philco 91 Restore Code ??
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| I have two schematics for this radio one shows the 47 block (126-226) and the other (121-221) does not. My radio does no...dconant — 02:32 PM |
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Philco 91 Restore Code ??
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| No, that cannot be the 47.
The 47 is a regular backelite block cap. Look at the chassis picture, it is shown there. Rig...morzh — 01:45 PM |
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