Berlant transformers?

[Quayhog]

Does anyone here know who the manufacturer of Berlant's input and output transformers was?        T3344 (input), and T2560 (output).

 

[mjrippe]

Not sure about those part numbers.  The 50007x series were made by Langevin.

 

[Quayhog]

Thanks for the reply.  Those 5000xx had 11 pins and seem to be used post 1958 or so.  I'm curious about the octal ones.  I suspect Langevin too because the were only  forty miles apart,

 

[mjrippe]

Quite possible, note that on the 500077 only 8 pins are used!

 

[Quayhog]

I'm sure not all eleven pins were used, the schematic of the circuit showing the octal T3344 transformer shows two pins unused.

I'm trying to restore a series thirty recorder to full functionality and I didn't want to change out sockets unless absolutely necessary.

The hunt continues.

Jonathan