Transformers & Chokes

Features:

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Inductances measured at rated D.C. current.
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• Units are vacuum impregnated with polyurethane varnish for quiet and long life operation.

• 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.

Replacement for Fender Champ, VibroChamp, and Bronco amps, 4 ohms.
Equivalent to #125A35A & #022905.

Fender Original Blues Junior output transformer.
Equivalent to #049969.
15 watts.

Use as a standoff, coil/choke form, or antenna coil.

An Isolation Power Transformer for isolating equipment from direct connection to the power line. The transformer is constructed with non-concentrically wound coils. The primary and secondary are wound on separate arbors, then assembled on a laminate core side-by-side separated by insulation. This prevents electrical connection, under normal or overload conditions, between the primary and secondary windings.

Replacement for Fender Deluxe, Deluxe Reverb, Vibrolux, Vibrolux Reverb Equivalent to Manufacturer part number 125C3A & 022707 Specifications: Inductance ± 15% 4 H D.C. Current 50 mA Features:

• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Inductances measured at rated D.C. current.
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".
• Units are vacuum impregnated with polyurethane varnish for quiet and long life operation.

• Primary 115 VAC, 60 Hz.
• Secondary 2.5 C.T.
• Center tapped secondary.
• Open style, channel bracket, two hole chassis mount.
• Minimum 6" long leads.
• Dual bobbin design - no electrostatic shield required.
• Class B insulation (130 degrees, C).
• Hi-Pot test of 2,000 V RMS.
• UL listed (# E50394) & CSA certified (# LR3902).

Replacement for Fender Vibrolux and Tremolux Blackface AA763 (1963-1966).
Equivalent to #125P26A & # 036483. 35 Watts.

Replacement filter choke for Marshall JCM800s.

• 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.
• Core material is Grain Oriented Silicon Steel.

Fender Original Blues Junior Power Transformer. Equivalent to #049967.

Developed in response to requests from the Collins Collectors Association"this is a matching audio transformer for older equipment with 600 ohm audio outputdriving modern speakers. Or for "classic" high impedance speakers used with newer equipmentsimply swap primary for secondary (ie...4 or 8 ohm input and 600 ohms out). Key Features Isolation unit: (i.e.

Coil assembly for P-T156. Use your own iron to preserve mechanical fit. Coil window is 1/2 x ½".

• Enclosed, 4-hole mount chokes
• Tolerance of 15% on both inductance & resistance.
• Inductances measured at rated D.C. current.
• Minimum 8" long leads.
• Units will exhibit less inductance at slightly higher currents or more at lower currents.
• Perfect for high voltage power supply filtering, case matches power transformers & tube audio output transformers.
• Units are vacuum impregnated with polyurethane varnish for quiet and long life operation.
• For more sizes and voltages (open - bracket mount type) - see P-T154-P-T156-X
• Operating temperature range is -40C to 85C

• Primary: Universal - 100, 110, 120, 200, 220,230, 240 VAC 50/60 Hz.
  
  • NOTE: units are designed to operate with BOTH primary windings engaged.
  • See primary wiring information under resources.
• Bias Tap: 50 VAC tap from high voltage secondary C.T. (except part number P-T379WX - uses a separate 60VAC 0.2 Amp winding).
• Highpot tested: 2,000 VAC
• Faraday Copper Primary Shield: Our electrostatic shield reduces the capacitive coupling from the primary - greatly attenuating higher frequency current coupling to the secondaries (shield is internally grounded to the end bell).
• Windings: Concentric wound for low stray field and low noise.
• Models: This series is an upgrade from our P-T263-X range of units PLUS 2 models designed specifically for 300B tubes (Part Number P-T300BX) and 2A3 tubes (Part Number P-T302AX).
• Finish: Black powder paint to match our P-T1650X series of output transformers Units can be run full wave bridge or full wave C.T.
• Conservative designs - CSA certified (209651).

A good upgrade for later issue Marshall amplifiers. Good replacement for JMP and JCM 800s for EL34!

Great for upgrading later issue Marshall™ amps. Gives great classic sound.
Good replacement for JMP and JCM 800s. for EL34!

100 watt replacement power transformer for Marshall. Good replacement for JMP and JCM800s for EL34! Built to vintage specs with exact interleave ratios and materials. Gives great classic sound. Great for upgrading later issue Marshall amps.

• Primary 115 VAC, 60 Hz.
• Secondary 5 C.T.
• Center tapped secondary.
• Open style, channel bracket, two hole chassis mount.
• Minimum 6" long leads.
• Dual bobbin design - no electrostatic shield required.
• Class B insulation (130 degrees, C).
• Hi-Pot test of 2,000 V RMS.
• UL listed (# E50394) & CSA certified (# LR3902).

• Horizontal mount. For Vertical Mount, see P-T263-X
• Primary 117 VAC, 50/60 Hz. - except as noted
• Enclosed, 4 hole, chassis mount.
• Minimum 6" long leads.
• Units can be run full wave bridge or full wave C.T.
• Class A insulation (105 degrees C).
• Hi-Pot test of 2,000V RMS.
• Conservative designs - CSA certified (209651).
• For Vertical Mount, see P-T263-X

Includes: 3 pole, 3 position rotary switch, ¼" output jack and black chicken head knob. Hammond 1600A series transformers provide 'easy wire secondary' impedances of 4, 8, or 16 ohms. We now offer a selector switch, pre-wired and complete with ¼" output jack. Follow simple instructions provided to wire transformer secondary to switch, mount switch and ¼" jack in separate 3/8" diameter holes in chassis and you'll easily be able to select output impedance as necessary. (Not recommended for 1645A or 1650G) (See P-H1600 for a selector switch to work with Hammond 1600 series transformers.)

• Replacement for Vox amplifiers
• Designed for drop in replacement of original units.
• Physically, parts were designed to look similar to original factory units (where possible).
• Material used & design specs. were kept as close as possible to the original part to preserve the stock "tone".

The UBT-3 from One Electron is the same size and power (15 watts) as the UBT-1, but has a primary impedance suitable for single or paralleled tubes running at B+ voltages of 300 to 400 volts, such as: 2A3, WE 300B, 50, etc.