Transformers & Chokes

Dual 117/234 VAC primary, 50/60 Hz. operation. 44 V series, 22 V parallel secondary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 240V secondary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 48 V series, 24 V parallel secondary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 60 V series, 30 V parallel secondary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 80 V series, 40 V parallel secondary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 120 V series, 60 V parallel secondary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 12 V series, 6 V parallel secondary.mary, 50/60 Hz. operation.

Dual 117/234 VAC primary, 50/60 Hz. operation. 180 V series, 90 V parallel secondary.dary.

Dual 117/234 VAC primary, 50/60 Hz. operation. 18 V series, 9 V parallel secondary.

Audio watts: 4
Impedance: 5k ohms
D.C. Resistance: 178 ohms
Inductance: 44 henries
Rated D.C. Bias Current: 30 mA
Features:

• 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.

• Designed for push-pull tube output circuits.
• Enclosed (shielded), 4 slot, above chassis Type 'X' mounting.
• Frequency response 30 Hz. to 30 Khz. at full rated power (± 1 db max. - ref.

• Designed for push-pull tube output circuits.
• Enclosed (shielded), 4 slot, above chassis Type 'X' mounting.
• Frequency response 30 Hz. to 30 Khz. at full rated power (± 1 db max. - ref.

• Designed for general purpose or replacement use in push-pull tube output circuits. (For single ended use, see our 125 SE series - optimized for single ended tube output circuits).
• Frequency response: 150 Hz. - 15 Khz (± 1db max. ref. 1 Khz).
• Open style with minimum 5" long primary leads, secondary solder lugs for convenient secondary connections.
• Tables provided with transformer listing 90 pre-calculated impedance ratios.

• Designed for general purpose or replacement use (not Hi-Fi), in single ended, tube output circuits.
• Frequency response: 100 Hz. - 15 Khz (± 1db max. - ref. 1 Khz). (For full frequency response (20 Hz. to 20 Khz.) - see P-T1627SE).
• For push-pull output use, see P-T125A - optimized for push-pull tube output circuits.
• Open style with minimum 12" long primary & secondary leads leads.
• All sizes use butt stacked cores (using 29M6 steel) with an air gap, to reduce D.C. core saturation.
• Primary impedance range from 2,500 to 10,000 Ohms.
• Secondary impedance range from 4 to 32 Ohms.

Part No.
Audio Power
Max D.C. Bias
Dimensions (Inches)


A
B
C
D
E
G Mtg.