Transformers & Chokes

Open style, chassis mount transformers with a 115V 60Hz primary and a 12V center tapped secondary.

• 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".
• See P-T290-FENDER-120-UP for upgraded 120 V transformers, P-T290-FENDER-240 for 240 V transformers

Warning: Not all amplifier models of the same name use the same transformer model.

Features:

• Small, economical, open, two hole horizontal bracket mount.
• Insulated, color coded flexible leads, 4" long minimum
• Frequency response 150 Hz. to 15 Khz. (+/- 1 db, reference 1000 Hz.)
• When operating at impedances below nominal, power capability and the frequency spectrum are proportionately lower, conversely, at higher impedances power capability and frequency spectrum will be proportionately higher.

Secondary VAC: 10V C.T.
Current: 5 A
VA Rating: 50
Features:

• Single Primary 115VAC
• Operates on 50/60 Hz.
• Combination solder or quick connect terminals.
• Split bobbin construction eliminates the need for an electrostatic shield.
• Hi-pot tested to 2 KV RMS.
• Economical open style, channel frame - chassis mount design
• UL recognized & CSA certified.

Features

• Economical "open bracket" - channel mount.
• Tolerance of 15% on both inductance & resistance.
• Inductances measured at rated D.C.

• Vertical mount, split bobbin design.
• Non-concentric wound.
• Low primary to secondary coupling - no electrostatic shield required.
• High insulation - Hipot of 2,000V RMS.
• Class B insulation - 130 degrees C.
• CSA certified (File # LR3902) and UL recognized (File #E207860).

• 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

Open style, chassis mount transformers with a 115V 60Hz primary and a 44V center tapped secondary.

Open style, chassis mount transformers with a 115V 60Hz primary and a 9V center tapped secondary.

• 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).

Features:

• Small, economical, open, two hole horizontal bracket mount.
• Insulated, color coded flexible leads, 3" long minimum
• Frequency response 150 Hz. to 15 Khz. (+/- 1 db, reference 1000 Hz.)
• When operating at impedances below nominal, power capability and the frequency spectrum are proportionately lower, conversely, at higher impedances power capability and frequency spectrum will be proportionately higher.

Secondary VAC: 12.6V C.T.
Current: 4 A
VA Rating: 50.4
Features:

• Dual Primary 115/230VAC
• Operates on 50/60 Hz.
• Combination solder or quick connect terminals.
• Split bobbin construction eliminates the need for an electrostatic shield.
• Hi-pot tested to 2 KV RMS.
• Economical open style, channel frame - chassis mount design
• UL recognized & CSA certified.

• 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.

Low Voltage, Filament High Current, Chassis Mount. 115 V primary.

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.

Open style, chassis mount transformers with a 117V 50/60Hz primary and a 72V center tapped secondary.

• Universal primary with taps for 100, 120, 220 or 240 VAC, 50 / 60 Hz. (Except the 260A6 which is 117V, 50/60 Hz only)
• Designed for preamps, low power amps, general replacement, test equipment, etc.
• Economical, open frame, chassis mount - two hole (.187 dia. = G) channel bracket (figure #1) or four hole mounting (figure #2).
• Units include a Faraday shield between the primary and secondary windings. Our electrostatic shield reduces the capacitive coupling from the primary - greatly attenuating higher frequency current coupling to the secondaries.
• Minimum 5" long leads.
• For more selection check out our P-T300-X series of universal plate & filament transformers.

Open style, chassis mount transformers with a 115V 60Hz primary and a 7V or 7.5V secondary.

Developed in response to requests from RCA Radiola III-A collectors. The original transformers are usually found with open" windings due to the fine wire and high turns usedcoupled with age. This is a universal replacement type - it will replace any of the three audio transformers used (1st audio driver2nd audio-phase splitter stage or output transformer)by correctly connectiong the 5 lugs. A pin out and connection diagram is included. The cases from the old transformer will fit this new unit. The terminal board is a duplicate of the original.
Key Features

• Primary: 4000 turns, #41 wire (lugs 4 & 2)
• Secondary: 12000 turns C.T., #41 wire (lugs 5 & 1lug 3 is C.T. connection)
• Termination: Solder lugs on a 1 3/4" x 1" terminal board with 4-5" connecting leads
• Size: 1-7/8" long x 1-11/16" wide x 1-3/8" deep
• Lamination Core Size: 5/8" x 1/2"
• Weight: 7 oz.

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

• Open style, chassis mount transformers with a 115V 60Hz or 117 50/60Hz primary and a 12.6V center tapped secondary

Low profile mounting, dual - split bobbin design. 12VA.

• Open style, chassis mount transformers with a 115V 60Hz primary and a 50V center tapped secondary.

Open style, chassis mount transformers with a 115V 60Hz primary and a 100V center tapped secondary.