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Philco 20A - Electronic Restoration Questions
Steve Davis
Phorum Expert
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Posts: 1,400
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Joined: Oct 2007
City: Linn Creek, MO
#8

08-10-2017, 10:05 AM
Since your radio is a 20A rather than a 20, the values of your original filter capacitors are a little different. The 20A was designed to work on 25 to 40 cycle AC so the filter capacitors were a little higher value. My recommendation would be to use a 1.0 uf for the first filter (terminals 1 and 2), a 4.7 uf for the second filter (terminals 1 and 4) and omit the capacitor that parallels the choke (terminals 2 and 6).

Steve
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Messages In This Thread
RE: Philco 20A - Old cap can caps - by morzh - 08-09-2017, 07:03 PM
Capacitors for Philco Model 20 - by MrGrnEgz - 08-09-2017, 10:12 PM
RE: Capacitors for Philco Model 20 - by MrGrnEgz - 08-10-2017, 08:50 AM
RE: Capacitors for Philco Model 20 - by Steve Davis - 08-10-2017, 10:05 AM
RE: Capacitors for Philco Model 20 - by MrGrnEgz - 08-10-2017, 01:46 PM
RE: Capacitors for Philco Model 20 - by MrGrnEgz - 08-10-2017, 02:27 PM
RE: Capacitors for Philco Model 20 - by MrGrnEgz - 08-11-2017, 04:26 AM
Model 20A Frequency Indicator - by MrGrnEgz - 08-11-2017, 04:38 AM
Model 20A Power Cord - by MrGrnEgz - 08-12-2017, 12:18 PM
RE: Model 20A Power Cord - by Radioroslyn - 08-12-2017, 12:28 PM
Model 20A Speaker Cone Repair - by MrGrnEgz - 08-13-2017, 08:41 PM
AUX audio input for model 20A - by MrGrnEgz - 08-13-2017, 09:54 PM
RE: Model 20A Speaker Cone Repair - by MrGrnEgz - 08-14-2017, 07:50 AM
RE: Model 20A Speaker Cone Repair - by morzh - 08-14-2017, 03:48 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration