1948 Westinghouse Model 1821 (182) audio problems
Posts: 303
Threads: 31
Joined: Dec 2019
City: Elkhart
State, Province, Country: Indiana
Quote:You don't want to replace the two 50uF's with a single 100uF. They and the 1K resistor (plus transformer inductance) make up a PI filter (https://circuitdigest.com/tutorial/pi-fi...esign-tips, https://electronicscoach.com/pi-filter.html).
As far as the values new capacitors you get probably have a 20% tolerance (50uF => 40uF-60uF). I have to think the originals weren't any better...
No, I wasn't talking about replacing the 2 50 MFDs with a single 100 MFD, I was talking about replacing each 50 MFD with a 100 MFD for each 50 MFD, but I was told that wouldn't be a good idea.
So I'm just going to replace them with a 47 MFD at 250 WVDC which the Voltage rating is higher than the originals so that there is more surge voltage to work with than the originals.
Now as for the output transformer (which apparently I had forgotten that I had figured out it was bad until I had revisited this thread the other day) I ended up ordering a Hammond P-T125J Output Transformer, because its primary and Secondary winding specs were much closer to the original output transformer's specs than the one that was suggested here (the P-T125ASE), plus it has the extra tap like the original did.
Here's the link to the transformer in question:
Hammond P-T125J Output Transformer
Messages In This Thread
RE: 1948 Westinghouse Model 1821 (182) audio problems - by captainclock1988 - 09-11-2020, 11:25 AM
Users browsing this thread: 9 Guest(s)
|
Recent Posts
|
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 |
trying to identify this wire type
|
The red wire is rubber covered wire.
The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM |
trying to identify this wire type
|
Greetings Phorum members,
Hope you can help me identify this type of wire in the photo I have attached. I am not sure ...georgetownjohn — 01:53 PM |
Philco 60 Squealing
|
All correct shields must be in place, all tubes correct no subs of any kind.
Check any soldered, riveted ground conne...Chas — 01:24 PM |
Philco 60 Squealing
|
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM |
Philco 46-420 Code 121 Reception issues
|
Welcome Eric,
I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM |
Philco 46-420 Code 121 Reception issues
|
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM |
Philco 42-1008 conversion kit
|
Interesting. I haven't seen that before.klondike98 — 07:02 PM |
12' Philco
|
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM |
Who's Online
|
There are currently no members online. |
|
|