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

SKU: PH-TT-50

$89.99

● 12-0-12V toroidal transformer, 90%–96% efficiency with <1.08W no-load loss for efficient power conversion. ● Toroidal structure and copper winding help reduce noise and electromagnetic radiation. ● DC2500V voltage strength and ≥500MΩ insulation resistance support reliable operation. ● 120V AC input, 2x24V AC output, 50Hz/60Hz, with <70°C rise at 120% overload.

Power *
Primary Voltage (AC) *
Secondary Voltage (AC) *

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Overview
Specs
Application
FAQ
Reviews

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.

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 70℃

Details

PET Polyester Film Insulation: Uses PET polyester film for reliable insulation and stable electrical performance.
Protective Design: Built with a protective structure for safer and more stable operation.
Enameled Copper Wire: Uses double-insulated industrial copper wire for high strength, efficiency, and stability.
High Magnetic Flux Core: Features a smooth low-gap core for low noise, low interference, and high efficiency.

Toroidal Transformer Accessories

Toroidal transformer accessories

Toroidal Transformer Internal Structure

Toroidal transformer internal structure

Wiring Instructions

Without Baseplate Installation

A Pedestal Installation

Specs

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)
No. of Outputs	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	≥500MΩ
Cooling Method	Natural air cooling
Temperature	+40℃
Certification	CE, RoHS, ISO
Warranty	12 months
External Diameter	90mm(50VA), 100mm(70VA)
Height	41mm(50VA), 45mm(70VA)
Pedestal	9090mm(50VA), 100100mm(70VA)
Mounting Hole Distance	7878mm(50VA), 9090mm(70VA)
Weight	1.2kg
Package Included	1Toroidal transformer + 1Accesorries sets (Nut, Shim, Metal disk, Rubber gasket, Pedestal, Screw)

Application

Audio Amplifiers

Power Supply Units

Control Circuits

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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