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Power Transformers

Power Transformers

Power transformers are essential components in electrical circuits, providing the necessary voltage transformation for various applications. Here are some key offerings in this category.

Heavy Duty Industrial-Grade Transformer

GB5226 GB5226

Heavy industrial-grade Transformer, designed for operation on 220V, 50-60 Hz. Because of the the 50 Hz rating, operation on 240 VAC 60 Hz will yield 20% increase in VA rating (450 VA), and 9% increase in terminal voltage. Using Transformer in Voltage Doubler circuit will yield 600 VDC @ 0.5A on 120 VAC, and 1200 VDC @ 0.4A on 240 VAC (ICAS). Ideal for sweep tube, or three 811A amplifier. Quality construction includes barrier block and cover.

Size: 4 3/4”W x 4 1/4”D x 4 3/4” H

Shipping Weight: 12.5 lbs.

Part Number: GB5226

Power / Filament Transformer

Excellent Quality.
Mfg. by MagneTek Triad

F-271U Power Transformer

• Primary 115V 50/60 Hz

• Secondary 40 VCT @ 2A

Size: 2 3/4” x 2 1/2” x 3 3/8”

Shipping Weight: 4 lbs.

Part Number: F-271U

Power / Filament Transformer

Excellent Quality.
Mfg. by MagneTek Triad

F-41X Power Transformer

• Primary 115V 60 Hz

• Secondary 25.2 VCT @ 2A

Size: 4” x 2 1/4” x 2 5/8”

Shipping Weight: 3 lbs.

Part Number: F-41X

Power / Filament Transformer

Excellent Quality.
Mfg. by MagneTek Triad

F-255X Transformer

• Primary 115V 60 Hz

• Secondary 20 VCT @ 2A

Size: 4” x 2 1/4” x 2 5/8”

Shipping Weight: 3 lbs.

Part Number: F-255X

Isolation Transformer

Mfg. by Triad-Ultrad

N73A Power Transformer

Size: 3 7/8 ” x 3 1/4” x 3 3/4 ”

Shipping Weight: 6.2 lbs.

Part Number: N-73A

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F-91X Triad Magnetics Power Transformer 115VAC 60Hz (NOS)
F-91X Triad Magnetics Power Transformer 115VAC 60Hz (NOS)

In Stock

$25.91


  • Primary: 115V 60 Hz

  • Secondary: 10-10V, 20VCT, 40VCT  @ 0.3ADC2

  • Temperature Rise: 35C TYP (45C MAX allowed)


New Old Stock * No longer available for export
MFR: Triad Magnetics
SKU: F-91X


Data Sheet

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A-8101 Stancor 5 Watt Line to Voice Coil Audio Transformer (NOS)
A-8101 Stancor 5 Watt Line to Voice Coil Audio Transformer (NOS)
Made in the USA

In Stock

$34.91


  • Primary Impedance in Ohms: 500

  • Secondary Impedance in Ohms: 6-8/3.2

  • Audio Watts: 5


New Old Stock * No longer available for export
MFR: Stancor
SKU: A-8101

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A-8105 Stancor 70.7 Volt Line to Voice Coil Audio Transformer (NOS)
A-8105 Stancor 70.7 Volt Line to Voice Coil Audio Transformer (NOS)
Made in the USA

In Stock

$38.91


  • Termination: Solder Lug

  • Primary DC Resistance: 950 Ohms

  • Secondary DC Resistance: .6 Ohms

  • Frequency Response ± 3dB: 50-20000dB


New Old Stock * No longer available for export
MFR: Stancor
SKU: A-8105

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PCA-3 Stancor Power Transformer 120V 30A (NOS)
PCA-3 Stancor Power Transformer 120V 30A (NOS)
Made in the USA

In Stock

$74.91


  • Primary Configuration: Single

  • Primary Side Voltage: 120 V

  • Power Rating: 30 VA

  • Termination: Solder Lug

  • Dimension: 2.5" wide x 2.62" deep x 3.129" high


New Old Stock * No longer available for export
MFR: Stancor
SKU: PCA-3

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120P28CT Abbott 115v 60Hz Power Transformer
120P28CT Abbott 115v 60Hz Power Transformer
Made in the USA

In Stock

$79.90


  • Input Primary: 115 VAC, 60Hz, 1 phase

  • Output Current: 4.29 Amps

  • Secondary DCR Ohms: 0.205

  • Dielectric Withstanding Voltage: 1750VAC


MFR: Abbott Technologies
SKU: 120P28CT


Data Sheet

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F-251X Triad Magnetics Transformer 115VAC 14.0VCT @ 2.00 Amps (NOS)
F-251X Triad Magnetics Transformer 115VAC 14.0VCT @ 2.00 Amps (NOS)

In Stock

$20.91

Electrical Specifications (@25C)



  • Maximum Power: 28.0 VA

  • Primary: 115V 50/60 Hz

  • Secondary: 14.0VCT @ 2.00 Amps

  • Voltage Regulation: 10 % TYP @ full load to no load

  • Temperature Rise: 35C TYP (45C MAX allowed)


New Old Stock * No longer available for export
MFR: Triad Magnetics (Magnatek)
SKU: F-251X

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10B-2 Superior Electric Powerstat Variable Transformer 1.75 Amps (Variac) (Pull)
10B-2 Superior Electric Powerstat Variable Transformer 1.75 Amps (Variac) (Pull)
Made in the USA

In Stock

$109.91

Powerstat Variable Transformers are auto-transformers of toroidal core design, with a movable brush-tap which rotates to deliver a continuoously-adjustable output voltage from AC power lines.


Type: 10B-2
Line Voltage: 240
Frequency: 60Hz
Output Voltage: 0 - 264
Maximum Amps: 1.75
Maximum KVA: .46


Used * No longer available for export
MFR: Superior Electric
SKU: 10B-2-P

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4300009 Power Transformer, 120/240vac, 7.5vac@120vac
4300009 Power Transformer, 120/240vac, 7.5vac@120vac
Made in the USA

In Stock

$99.95

Power Transformer, 120/240vac, 7.5vac @120vac; 15vac@240vac


7.5vac @120vac; 15vac@240vac


Use CL101 surge limiter


Size: 3.75" Wide x 4.5" Deep x 4.5" High


SKU: 4300009


EIA 549-9204 CLASS H PF


When operated on 240 VAC, 15 VAC available.  Ideal for 12 VDC power supplies. 


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