Tube Driver - Interstage 124 Series

Features

  • 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 universal radiola replacement unit.

Hookup Data

  • For Parallel connected operation (33.8K Ohm Secondary):
    • Connect the GRN/YEL wire to the GRN wire AND the BLK/YEL wire to the BLK wire.
       
  • For Series connected operation (135K Ohm Secondary):
    • Connect the BLK/YEL wire to the GRN (this becomes the center tap) - GRN/YEL and BLK wires are the output.
Part No. Audio Primary Secondary Laminations Dimensions
Impedance D.C. Impedance D.C. Winding
Resistance Resistance A B C D G
Watts (Ohms) (Ohms) (Ohms) (Ohms) Mtg Hole
124A 5 10K 403 90K C.T. 1524 C.T. Grain Oriented Steel 2.38 1.35 1.43 2.00 0.19
124B 5 10K 403 90K C.T. 1500 C.T. 49% Nickel 2.38 1.35 1.43 2.00 0.19
124C 5 10K 403 90K C.T. 1524 C.T. None-Coil Only - - - - -
124D 5 7K C.T. 454 15.8K C.T. 681 C.T. Grain Oriented Steel 2.81 1.46 1.68 2.38 0.19
124E 5 15K C.T. 728 33.8K/135K 3880 Dual Grain Oriented Steel 2.88 1.74 2.37 2.38 0.19
124F 5 15K C.T. 900 3.75K / 15K 899.6 Dual Grain Oriented Steel 2.88 1.75 2.37 2.38 0.19

Admin: Edit on Google Docs

Need Assistance? Contact Us.

Data subject to change without notice.