Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco Model 86 Capacitor Can Clarification
#1

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
#2

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

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#3

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.
#4

Sounds great!  Thank you both for the advice.

George.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM

[-]
Who's Online
There are currently no members online.

>