Western Electric 197a Output Transformer

working on this, so far, >

any help greatly appreciated, pics, dcr, etc,

From my copy of WE Transformers from 1964.

197B
Freq Range:             0.017 - 6000
Impedance Ratio:      75:110
Low Winding:           (1-2)
High Winding:          (3-4-5)* (CT)

Max DCR
Low Winding:           0.135
High Winding:          0.110

Inductance            
Min:                        450 millihenries
Test Freq:               0.1kc
For Winding:           (3-5)

Shield:                    Electrostatic

Type:                     Repeater

Impedance Ratio (Ohms)
From:                    75
To:                        110

Frequency Range (cps)
From:                    17
To:                        6000

There's more info, but perhaps it would be better to send you the pdf.

Mark

24K:600
DCR 1600:370
column for minimum inductance states 72, but says (high side) next to the number(?). 

thanks for that!

here is the latest incarnation of the lam, still a WIP at this point, but gettin there,



exciting discovery made on peerless transformer late last night, news at 11,,,

  Pictures :





Info :

" Ohm readings are:
  350 ohms (low)
  1.45Kohms (high)
  1.45Kohms (high) "

Schematic WE 121A :