Altec 436C Transformers

[CJ]

here is a print on the innerstage and OPT for the Altec 436C,

some info is missing as the OPT had a cooked primary,

21 EI lams are similar to 50 EI in case you want to build a 4651,

do not know what is going on with the center tap as i did not see one on the 4651 i took apart, 

 

[emrr]

4651's don't have CT as on 436A.  From 436B on, they do. 

 

[jackies]

Awesome sauce!
Keep 'em coming, CJ!

 

[CJ]

no problem Jackies!, thanks Emmr!, i think you straightened me out on that before back when i took that thing apart,

 

[rafafredd]

Now you are talking, CJ!

 

[CJ]

ok, i fixed an error on a wire color and made the coil structure easier to figure out,

so delete the first version if you downloaded it and replace it with the new and improved version,

what else re we interested in?

 

[emrr]

Someone needs to send you an open RCA 86 limiter interstage.  They seem to be one that's more commonly in need of replacement, and I've heard varying reports about the Sowter replacement.
Wait!  Maybe Niels sent me one.  Digging through boxes....

 

[zebra50]

Hi CJ,

Nice info. Can you share how you're measuring the leakage L and C? Is it done at a particular frequency, and so on?

Cheers!
Stewart

 

[CJ]

leakage inductance- just short the sec and measure the pri inductance,

capacitance- hook C meter across 1 pri lead and 1sec lead,

i used a BK handheld meter or this test,