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    Picture of 12-0-12V Toroidal Transformer, 50VA/70VA
    Picture of 12-0-12V Toroidal Transformer, 50VA/70VA
    Picture of 12-0-12V Toroidal Transformer, 50VA/70VA
    Picture of 12-0-12V Toroidal Transformer, 50VA/70VA
    Picture of 12-0-12V Toroidal Transformer, 50VA/70VA

    12-0-12V Toroidal Transformer, 50VA/70VA

    2 review(s) | Add your review
    SKU: PH-TT-50
    $89.99
    ● 50VA/70VA single-phase toroidal transformer with selectable primary voltage. ● Multiple secondary voltage options are available, with custom configurations supported. ● Dual 4-wire outputs are standard; a single-output version is optional. ● Copper winding, 90%–96% efficiency, and 50/60Hz operation.
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    Overview

    Toroidal Transformer is a single phase AC power transformer for efficient and stable voltage conversion. It features 50Hz/60Hz frequency, and a toroidal coil structure. Built with insulated copper wire, PET polyester film insulation, and a high magnetic flux core, it provides 90%-96% efficiency, low no-load loss, low noise, low electromagnetic radiation, and low temperature rise. Applications include small audio amplifiers, preamplifiers, DAC power supplies.

    Specification

    Phase Single phase
    Power 50VA/70VA (50W/70W)
    Primary Voltage 120V AC (Optional: 110V, 120V, 220V, 230V, 240V)
    Secondary Voltage 2x24V (24-0-24) AC (Optional: 12V, 24V, 48V, 110V, 220V, 2x6V, 2x12V, 2x15V, 2x24V, 2x30V, 2x35V, 2x40V, 2x50V, can be customized)
    Secondary Current 4.17A(50VA)/5.83A(70VA) each winding
    No. of Inputs 1 input
    No. of Outputs 2 outputs, 4-wire (1 output is available)
    Note: For the transformer with 2 outputs 4-wire, each output provides the same voltage and current level, the sum of 2 output power capacities is equal to the total capacity.
    Frequency 50Hz/60Hz
    Winding Material Copper Wire
    Coil Structure Toroidal
    Efficiency 90%-96%
    No-load Loss <1.08W(50VA), <1.26W(70VA)
    Input Wire UL1015-18#Red
    Output Wire UL1015-16#Blue, Black
    Voltage Strength DC2500V
    Insulation Impedance ā‰„500MĪ©
    Cooling Method Natural air cooling
    Temperature +40ā„ƒ
    Certification CE, RoHS, ISO
    Warranty 12 months
    External Diameter 90mm(50VA), 100mm(70VA)
    Height 41mm(50VA), 45mm(70VA)
    Pedestal 90*90mm(50VA), 100*100mm(70VA)
    Mounting Hole Distance 78*78mm(50VA), 90*90mm(70VA)
    Weight 1.2kg
    Package Included 1*Toroidal transformer + 1*Accesorries sets (Nut, Shim, Metal disk, Rubber gasket, Pedestal, Screw)
    Details
    50 VA toroidal transformer feature

    Feature

    • High Efficiency: The winding is precisely matched to the core for improved energy efficiency and reliable power conversion.
    • Long Service Life: Built with quality materials and advanced manufacturing technology for a service life of up to 30 years.
    • Low Noise Operation: The seamless rolled core and evenly distributed winding help reduce operating noise.
    • Low Electromagnetic Radiation: The toroidal design and optimized winding structure help minimize electromagnetic radiation.
    • Low Temperature Rise: Even under 120% overload, the temperature rise remains below 70ā„ƒ.
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    1. PET Polyester Film Insulation: Uses PET polyester film for reliable insulation and stable electrical performance.
    2. Protective Design: Built with a protective structure for safer and more stable operation.
    3. Enameled Copper Wire: Uses double-insulated industrial copper wire for high strength, efficiency, and stability.
    4. High Magnetic Flux Core: Features a smooth low-gap core for low noise, low interference, and high efficiency.
    50 VA toroidal transformer detail

    Toroidal Transformer Accessories

    Toroidal transformer accessories

    Toroidal Transformer Internal Structure

    Toroidal transformer internal structure

    Wiring Instructions

    Toroidal transformer without baseplate installation

    Without Baseplate Installation

    Toroidal transformer a pedestal installation

    A Pedestal Installation

    Application

    Audio amplifiers

    Audio Amplifiers

    Power supply units

    Power Supply Units

    Control circuits

    Control Circuits

    LED lighting systems

    LED Lighting Systems

    FAQ

    Q1: Is a 70VA toroidal transformer suitable for continuous low-power operation?

    A 70VA toroidal transformer can be suitable for continuous low-power operation when the load remains within the rated range and the equipment is designed with proper ventilation and protection. It is often used in devices that operate for long periods under stable load conditions.

    Q2: Can a 70VA toroidal transformer work with dual-voltage secondary designs?

    Yes. A 70VA toroidal transformer can be supplied with dual secondary windings for applications that need flexible output arrangements. This is useful in small power modules, balanced supply circuits, or designs where different wiring methods are needed during integration.

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    2 review(s)
    4.5 2
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    Greg | 9/30/2026 1:54 AM
    Clean power, clean sound
    Built a small headphone amp and needed a quiet supply. This toroid replaced a cheap transformer ā€” hum disappeared completely, background is dead silent now. Wired up the dual secondaries without issue, and it runs cool even after hours.
    Only knock: it's heavier than I expected for the size, and mounting takes some care. But for the money, it's hard to beat.
    Robert | 5/8/2026 1:03 AM
    Quiet and efficient for audio project
    Picked up the 70VA version for a small power amp build. Runs cool and quiet, no hum issues like some other toroids I've tried. The secondary voltages were spot on. Good for audio gear or anything needing clean power.
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