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Tube Driver-Interstage-Open Frame (124 Series)

 

  •  

 

  • Designed for general purpose or replacement use in push-pull or phase inverter tube driver circuits.
  • Should not be used for single ended applications. They have no gap for DC bias current present in SE mode.
  • Open style with minimum 5" long primary leads.
  • Minimum frequency response 150 Hz. - 15 Khz (+/- 1db max. ref. 1 Khz.) at full rated power.
  • Our part number 124B is the same as our 124A except for 49% Nickel laminations for greater fidelity.
  • Our part number 124C (below) is the COIL ONLY (for those experimenters who want to use their own "iron").
  • If you are looking to replace Radiola III-A audio transformers, check out our Radiola replacement unit- Click here.
  • All rated at 5 watts audio
  • See mechanical data below  

Part Number

(click for price or to order)

Data Sheet

 

Primary

Secondary

Laminations

Impedance

(Ohms)

D.C.

Resistance

(Ohms)

Impedance

(Ohms)

D.C.

Resistance

(Ohms)

Winding

124A

10K

403

90K C.T.

1524

C.T.

Grain Oriented Steel

124B

10K

403

90K C.T.

1500

C.T.

49%

Nickel

124C

10K

403

90K C.T.

1524

C.T.

None-

Coil Only

124D

7K C.T.

454

15.8K C.T.

681

C.T.

Grain Oriented Steel

124E

15K C.T.

728

33.8K/135K

3880

Dual

Grain Oriented Steel

124F

15K C.T.

900

3.75K / 15K

899.6

Dual

Grain Oriented Steel

  

 Mechanical Data

 

Part Number

 

Dimensions (inches)

A

B

C

D

G

Mtg Hole

124A

124mechsize.jpg

2.38

1.35

1.43

2.00

0.19

124B

2.38

1.35

1.43

2.00

0.19

124C

-

-

-

-

-

124D

2.81

1.46

1.68

2.38

0.19

124E

2.88

1.74

2.37

2.38

0.19

124F

2.88

1.75

2.37

2.38

0.19

 

  

 

 

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