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TUBE DRIVER TRANSFORMERS |
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TUBE DRIVER TRANSFORMERS |
Key Features:
 | 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. |
| 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 Radio III-A audio transformers, check out our universal replacement unit. |
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Cat. No. |
Audio |
Primary Impedance |
Secondary Impedance |
Secondary |
Laminations |
Dimensions (Inches) | ||||
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A |
B |
C |
D |
Price: | ||||||
| 124A |
5 |
10K |
90K |
C.T. | Grain Oriented Steel |
2.37 |
1.10 |
1.36 |
2.00 |
$17.16 |
| 124B |
5 |
10K |
90K |
C.T. | 49% Nickel |
2.37 |
1.10 |
1.36 |
2.00 |
$33.26 |
| 124C |
5 |
10K |
90K |
C.T. | None |
- |
- |
- |
- |
$14.77 |
| 124D |
5 |
7K c.t. |
15.8K c.t. |
C.T. |
Grain Oriented Steel |
2.80 |
1.30 |
1.68 |
2.38 |
$24.96 |
| 124E |
5 |
15K c.t. |
33.8K/135K |
Dual |
Grain Oriented Steel |
2.87 |
1.50 |
2.35 |
2.38 |
$37.87 |
Mechanical Data:
Schematic & Hookup Data: (124E Only)
- 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.
Key Features (126 Series):
| 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. - 20 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. |
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Part No.
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Audio |
Primary |
Secondary |
Inductance
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Rated D.C.
Bias Current |
Dimensions (Inches)
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Impedance
(Ohms) |
D.C. Resistance
(Ohms) |
Impedance
(Ohms) |
D.C. Resistance
(Ohms) |
A
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B
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C
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D
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E
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G - Mtg. |
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| 126A $77.78 |
4
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5K
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178
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5K
|
178
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59 Henrys
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15 ma.
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2.50
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3.12
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3.12
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2.0
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2.25
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.203 x .38
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| 126B $77.78 |
4
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5K
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178
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5K
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178
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44 Henries
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30 ma.
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2.50
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3.12
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3.12
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2.0
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2.25
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.203 x .38
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| 126C $77.78 |
4
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10K
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375
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10K
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375
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106 Henrys
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15 ma.
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2.50
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3.12
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3.12
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2.0
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2.25
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.203 x .38
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Mechanical Data (126 Series):
Schematic & Hookup Data (126 Series):
Email us if you have any questions.
