Volume control

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

Linear Mode

Volume control

Bob
Member

Posts: 54
Threads: 18
Joined: Oct 2008
City: South Beloit, IL

01-22-2013, 06:00 PM

I removed the pot. It reads open, so I measured from wiper to one end with it full ccw. As I turn it cw it got up to +/- 40k. Moving the meter to the other end of the pot and it read +/- 170k for a total of +/-210k. The parts list dose not give a value for this pot, just a part # for the pot with off on switch. Do you think 210k would be right for this volume? For some reason I was thinking it should be in the 10k range. I took it apart to see how the "fixed" limit works, and all that is is a positive stop to keep the wiper from going all the way to the end. From what I could tell the "fixed " limit is about 210 ohms to hold a 3 volt bias on the suppressor grid of the I.F. tube.
I think!!! Do they still make pots like this?
Thanks for the help.
Bob

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Volume control - by Bob - 01-21-2013, 09:22 PM

RE: Volume control - by morzh - 01-22-2013, 11:30 AM

RE: Volume control - by codefox1 - 01-22-2013, 04:19 PM

RE: Volume control - by Bob - 01-22-2013, 06:00 PM

RE: Volume control - by rghines1 - 01-22-2013, 08:11 PM

RE: Volume control - by Bob - 01-22-2013, 09:48 PM

RE: Volume control - by TA Forbes - 01-24-2013, 03:20 PM

RE: Volume control - by Bob - 01-25-2013, 05:13 PM

RE: Volume control Update - by Bob - 02-10-2013, 04:46 PM

RE: Volume control - by rghines1 - 02-11-2013, 07:41 PM

RE: Volume control - by Arran - 02-11-2013, 08:14 PM

RE: Volume control - by Bob - 02-12-2013, 09:33 PM

RE: Volume control - by rghines1 - 02-13-2013, 09:02 PM

RE: Volume control - by Bob - 02-17-2013, 09:19 PM

RE: Volume control - by rghines1 - 02-18-2013, 07:15 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Yep the dim bulb test is OK but I'd definitely replace all those electrolytics before I did it. Since those #47 conden...klondike98 — 09:18 PM
Philco 42-345 Restoration/Repair
The resistor is a 2.2 Meg, it was the last one I hadn't replaced. The broadcast is coming in after replacing it.osanders0311 — 09:09 PM
Philco 42-345 Restoration/Repair
What does the resistor measure? I think it should be 3.3 Meg. If the oscillator coil has continuity and the resistanc...RodB — 09:03 PM
Philco Model 38-7: what caps & resistors do fail typically?
Good idea to check the coils... then I'll get hold of an incadescent light bulb and see what happens when the unit is sw...Musaeum — 08:49 PM
Philco 42-345 Restoration/Repair
I have that same set, ain't too much shortwave I like anyway.....it is a good AM DX set. PaulPaul Philco322 — 08:32 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum, Martin! Open a new thread in Philco Electronic Restoration when you begin working on your 38-7. ...GarySP — 08:28 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum! :wave: Here's the schematic for that radio from our digital library: Something to do bef...klondike98 — 08:05 PM
Philco Model 38-7: what caps & resistors do fail typically?
Hi all, on vacation in Montreal, a friend of mine showed me a Philco Model 38-7 console radio from the 30ies. Mechan...Musaeum — 07:21 PM
Part numbers to model cross
I looked thru the documents and did not see one. Might have missed it though.Jim Dutridge — 07:16 PM
Philco 42-345 Restoration/Repair
Please tell me this was it, I replaced resistor 27 and it's playing on the broadcast band. I am afraid to change the ban...osanders0311 — 06:12 PM

Who's Online

There are currently 1009 online users. [Complete List]
» 2 Member(s) | 1007 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me