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

RCA 61-8 Output Transformer
#1

I have a RCA 61-8 that I'm doing for a friend and the output transformer is open, the thing is it has three leads on the primary in stead of two. The print shows a tap and 9 ohms. I usually use a PT-291 from AES as a replacement, Will this work? What do I do about the third lead how can it be connected or can it?

http://www.nostalgiaair.org/pagesbymodel...015046.pdf

Eric
#2

You don’t need a transformer with the tap if one is not readily available. Any AA5 OP transformer will do. Take a look the the schematic I attached. It is a simple radio with only the 1.5K resistor between the two filter caps and no tap. The transformer input would connect to the rectifier cathode and output to the OP tube plate on your set.

http://www.nostalgiaair.org/pagesbymodel...007666.pdf

Tony

“People may not remember how fast you did a job, but they will remember how well you did it”
#3

Yup, I found a old output and hooked it up and and it does work now I have to find a smaller one that I can fit in not a lot of room. Thanks
Eric




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
Thanks, will do.R3Sons — 01:25 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM
Just got a 49-1613 need to know...everything!
I just found your post. I have this exact same model, and have had it since 1985 when I was 15 years old! I performed a ...MuzzcoVW — 09:11 AM
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM
B&K 1077B no video
Hello Tim, I have that exact unit in my shop too plus a Sencore unit there are times I like one or other !!. Sincerely...radiorich — 11:07 PM
RCA 15X
Everthing goes at once, maybe it's the cold weather, I have had 2 dial strings break and no my little RCA is having dial...Paul Philco322 — 10:26 PM
Philco 91 Schematic
Hi Dan, I can't explain this specific resistor but I have seen the use of a switch to apply B+ voltage to screen gri...RodB — 09:36 PM

[-]
Who's Online
There are currently 11387 online users. [Complete List]
» 2 Member(s) | 11385 Guest(s)
AvatarAvatar

>