Interstage/driver
     
 
   

 

 

INTERSTAGE TRANSFORMER

 
  • Designed for driver use ONLY in single ended tube output amplifiers.
  • These units replace coupling capacitor circuits for improved sound.
  • Closed style with minimum 8" long leads.
  • All models use bifilar wound windings for exceptional coupling and bandwidth.
  • Minimum frequency response 20 Hz. - 30 Khz (+/- 1db max. ref. 1 Khz.).
  • The core is gapped to support the specified D.C. bias current.
  • Core uses Hi grade silicon laminations (29M6).
  • Units weight - 3 lbs. 2 oz.
 

 

Part No
Primary Impedance
(Ohms)
Secondary Impedance
(Ohms)
Ratio
Inductance
Rated D.C.
Bias Current
Dimensions (Inches)
Price
A
B
C
D
E
G
126A
5K
5K
1 : 1
59 Henrys
15 ma.
2.50
3.12
3.12
2.00
2.25
.203 x .38
30.20
126B
5K
5K
1 : 1
44 Henrys
30 ma.
2.50
3.12
3.12
2.00
2.25
.203 x .38
30.20
126C
10K
10K
1 : 1
106 Henrys
15 ma.
2.50
3.12
3.12
2.00
2.25
.203 x .38
30.20

 

Mechanical Data:

 

 

TUBE DRIVER TRANSFORMER

Tube driver transformer

 
  • Designed for general purpose or replacement use in single ended or phase inverter tube driver circuits.
  • Open style with minimum 5" long primary leads.
  • Minimum frequency response 150 Hz. - 15 Khz (+/- 1db max. ref. 1 Khz.) at full rated power.
  • Part number 124B is the same as our 124A except for 49% Nickel laminations for greater fidelity.
  • Part number 124C (below) is the COIL ONLY (for those experimenters who want to use their own "iron").
 

 

Part No Audio
Watts
Primary Impedance
(Ohms)
Secondary Impedance
(Ohms)
Secondary
Winding
Laminations
Dimensions (Inches)
Price
A
B
C
D
G
Mtg Hole
124A
5
10K
90K
C.T.
Steel
2.37 1.10 1.36 2.00
0.187
11.75
124B
5
10K
90K
C.T.
49% Nickel
2.37 1.10 1.36 2.00
0.187
28.26
124C
5
10K
90K
C.T.
None
-
-
-
-
-
10.22
124D
5
7K c.t.
15.8K c.t.
C.T.
Steel
2.80 1.30 1.68 2.38
0.187
16.46
124E
5
15K c.t.
33.8K/135K
Dual
Steel
2.87 1.50 2.35 2.38
0.187
20.81

 

Mechanical Data: Schematic & Hookup Data: (124E Only)
Transformer ref` diagram
Transformer connection diagram

 

 

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