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

Philco Bakelite block condensers?
#1

Sorry for the dumb question, but I've always wondered. Why did Philco use the Bakelite blocks in their designs? It seems like it would have cost more than the components themselves.

Thanks, Pat
#2

It was, I believe, a combination of factors. One was sealing the components in high temperature wax which was thought at the time to make the condensers (and the occasional resistor) inside impervious to moisture. Time has proven this to have been false, as the old paper capacitors go bad whether they are sealed in a Bakelite block or in a cardboard tube. Another, the bakelite blocks provided convenient tie points for wiring. Another thought - early on (mid 1930), their use helped keep their circuit designs somewhat of a mystery unless one had access to schematic diagrams. Of course, thanks largely to the work of John F. Rider who published his Perpetual Trouble Shooting Manuals, schematic diagrams for many radios became more widely available to the servicemen of the day around 1931.

Oh, and that is not a dumb question. The only dumb question is the one which goes unasked. Icon_smile

--
Ron Ramirez
Ferdinand IN




Users browsing this thread:
[-]
Recent Posts
Philco 60 Squealing
I have taken out the 2nd IF and found a problem or not. I believe the coils are litz wire. There is a very small strand ...dconant — 02:13 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A5...MrFixr55 — 06:48 AM
American Bosch Model 802 auto radio
I think it would come under either American Bosch or United American Bosch. American Bosch made sets for the American We...Arran — 05:53 AM
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM
Gilfillan Brothers Car Radio?
Hi everyone,  Special thanks to Joe Rossi for tracking down this obscure radio and thanks to others who took up the hun...Antipodal — 08:15 PM
trying to identify this wire type
Here's one source for your wire of many. Take care and BE HEALTHY! Gary P.S. Can't get the right color you need? I ...GarySP — 06:40 PM
trying to identify this wire type
...and modern wire of the appropriate gauges and insulation V-rating (300V minimum, usually shown right on the wire) is ...morzh — 05:47 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
I have a question about this radio, is there anyone that has access to this radio that has an intact unmolested speaker ...captainclock1988 — 04:28 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Well what makes me confuse all of those companies is that all three of those companies (Setchell-Carlson, Stromberg-Carl...captainclock1988 — 04:21 PM

[-]
Who's Online
There are currently 4921 online users. [Complete List]
» 3 Member(s) | 4918 Guest(s)
AvatarAvatarAvatar

>