01-19-2026, 11:18 AM
Hello All, I am a newby here, and looking for help on a Philco Model 65 that I am working on. I have found the wonderful restoration project that has already been posted, and have read it from end to end, and gotten a lot of help as a result. On the chassis that I am working on. the power supply choke #21 is burnt out, and despite noble efforts, is beyond repair. I have found the reason that this happened, and rectified that, but I have two questions that I would like direction on, those being (a) what would the likely inductance value of the choke be, and (b) what is the purpose of the capacitor in parallel with the choke? I understand the filter effect of the ones that go to ground before and after the choke coil (Pi type filter) but not sure of the purpose/theory of the one across the coil. Is it intended to form some sort of resonant circuit?
Thanks in advance to anyone who can give me a steer on this.
Ken
Thanks in advance to anyone who can give me a steer on this.
Ken




