Transformers & Chokes

Capacity: 500 VA
Dimensions: 9" long by 6" wide by 4" height
Features:

• Primary 120VAC, 50/60 Hz., Secondary 240VAC.
• Provides circuit isolation.
• Toroidal transformer for high isolation, low noise, light weight cool operation and low profile.
• 50 or 60 Hz.

The BFT-1B from One Electron was designed to power a stereo amplifier using UBT-1's in each channel but will also power an 80 watt push-pull tube amplifier. The BFT-1B is slightly larger than earlier versions of the BFT-1, allowing lower flux density and cooler operation. The tapped high-voltage windings and three filament windings provide flexibility in design. An electrostatic shield between the primaries and secondaries reduces power-line noise coupling. The primary arrangements allows use on virtually any power grid in the world.

• Over designed for single ended tube output circuits (triode, tetrode or pentode tubes).
• Enclosed (shielded), 4 slot, above chassis Type 'X' mounting.
• Frequency response at least 20 Hz. to 20 Khz. at full rated power (± 1 db max. ref.

Fender® Original Tone Master Power Transformer. Equivalent to #026477.

• Replacements for Yorkville/Traynor Amps
• 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".

Capacity: 500VA Features:

• Single winding does not provide isolation, for use where equipment is already isolated and only voltage change is required.
• World wide applications, 50 or 60 Hz.

Output to Line, Matching or Bridging

• Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with mounting hardware.
• Sealed case and wax potted core internally for stable characteristics and long life.
• Wide frequency response ± 0.5 db max. from 20 Hz. to 20 Khz. (except units over 5K ohms impedance, may be down 1 db @ 20 Khz.)
• Insertion loss of apx. 1 db.
• Maximum power level +15 dbm. with specified characteristics, or higher levels with reduced low frequency performance.
• Distortion is apx. 1.5% @ 20 Hz.

• 150/600 Ohm Primary Impedance
• 300/1200 Ohm Secondary Impedance
• Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with mounting hardware.
• Sealed case and wax potted core internally for stable characteristics and long life.
• Wide frequency response ± 0.5 db max. from 20 Hz. to 20 Khz. (except units over 5K ohms impedance, may be down 1 db @ 20 Khz.)
• Insertion loss of apx. 1 db.
• Maximum power level +15 dbm. with specified characteristics, or higher levels with reduced low frequency performance.
• Distortion is apx. 1.5% @ 20 Hz. under full power.
• Electrostatic shield between pri. & sec. connected to the green lead.
• Humbucking construction
• Balanced split windings on pri. & sec. for circuit versatility. Primary may be used as a secondary and vice versa for impedance matching.
• Lead length: Min. 4"

Genuine Marshall™ 100 watt output transformer for JCM900 and JCM2000.

Genuine Marshall™ output transformer for JTM45.

The UBT-2 from One Electron is the same size and power (15 watts) as the UBT-1, but has a higher primary impedance suitable for single tubes running at B+ voltages of 400 to 500 volts, such as: 50, WE 300B,etc.

The UBT-1 from One Electron is a low-impedance single-ended output transformer intended for parallel combinations of tubes running a B+ voltages of 250 to 325 volts, such as: two or three EL34s (triode connected), three 2A3s, two 300Bs, two 6AS7s, etc., as well as single sweep tubes run in 'enhanced-triode' mode, resulting in 10 to 15 watts of output power.

• Universal Primary - 100, 110, 120, 200, 220, 240 VAC 50/60 Hz.
• High voltage secondary designed for full wave center tapped use.
• 50 VAC bias tap from high voltage secondary C.T.
• Black epoxy painted to match our P-T1650 series of output transformers .
• Class A insulation (105 degrees C).
• Hi-Pot tested to 2,500 VAC.
• Windings are concentric wound for low stray field and low noise.

Secondary: 325-0-325 V, 46 mA Filament winding 1 : 5 VCT, 2 A Filament winding 2 : 6.3 VCT, 2 A Mounting centers: horizontal mount Weight: 2.5 lbs.

Genuine Marshall™ output transformer for JCM900 and JCM2000.

Genuine Marshall™ 50 watt power transformer for JCM900.

• 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.

Replacement power transformer for Marshall JTM45.

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.

• Primary 115VAC, 50 / 60 Hz., Secondary 115VAC
• Provides complete circuit isolation.
• Electrostatic shield between primary & secondary to greatly attenuate surges and noise.
• Hi-pot tested to 2 KV RMS.
• Circuit breaker in primary.
• Standard 3-wire, grounded plug & receptacle.
• Input (primary) connected to 5 foot long cord & standard North American plug (NEMA 5-15P).
• Output (secondary) connected to 1 foot long "pig tail" cord, 3-wire, standard North American grounded receptacle (NEMA 5-15R).
• North American Mark of Safety - C UL & UL listed (File #E211544)
• Indoor use only
• Remember - These units do NOT convert line frequency

Custom manufactured to replace most 6 and 7 tube sets of the early 1930s. Supplied with vertical mounting shells. Provides a seperate filament winding for audio output stages.
Specifications
Rating: 350-0-350 V, 70 or 90 mA (if 5 V winding is used with 2 A rectifier)
Windings: 5 V, 3 A; 2.5 V, 7.5 A; 2.5 VCT, 3.5 A
Mounting Centers:2 x 2.625"
Weight: 4.2 lbs.
Overall Height: 3.12"

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.

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.

• 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".

• Replacements for Marshall amps
• 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".