Philco Model 86 Capacitor Can Clarification - Printable Version
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+--- Thread: Philco Model 86 Capacitor Can Clarification (/showthread.php?tid=21227)
Philco Model 86 Capacitor Can Clarification - gbreisdorf - 04-25-2020
Greetings!
I downloaded a schematic from Riders that did not indicate electrolytics in the capacitor can. I later found another schematic on the Phorum site that indicated that they were indeed electrolytics. What has me perplexed is that a famous you tuber (Buzz1151) did a extensive restoration on the Philco 86 and decided to use some monster 630V film capacitors and his radio worked fine! I want to do things properly, but am curious about the discrepancy of the two schematics. The capacitors in question are 2 and 4 uf and if i understand basic theory, generally any value of 1 or higher would be electrolytic. I am as adventurous as the next guy, and sparks and fire don't scare me, but I already have a push pull xfmr with an open primary, so I do not want to destroy anything else. Any advice would be much appreciated.
George
RE: Philco Model 86 Capacitor Can Clarification - Radioroslyn - 04-25-2020
Hi George and welcome,
For this application use mylars as the ecaps won't survive the ripple current for long. The original caps were foil/paper.
GL
RE: Philco Model 86 Capacitor Can Clarification - rfeenstra - 04-25-2020
Indeed! I and many others are using Solen brand film caps. The have up to 47 mfd at 630 volts. They are made in France and available from many suppliers. The bigger ones get a bit pricey! A 2.2 at 630 volts is $3.15 and a 4.7 is $5.20 at Antique Electronic Supply. They will probably never need to be replaced again. A tiny bit cheaper at the Tube Depot.
RE: Philco Model 86 Capacitor Can Clarification - gbreisdorf - 04-25-2020
Sounds great! Thank you both for the advice.
George.