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
Cannot Adjust an IF Transformer’s cores
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM

[-]
Who's Online
There are currently 4102 online users. [Complete List]
» 2 Member(s) | 4100 Guest(s)
AvatarAvatar

>