20VA 230V to 24V EI Transformer for Automation Systems

Designed for Reliable Audio Transformer

1. Stable Voltage Output

The transformer is designed to provide stable secondary voltage under the specified operating conditions. The winding design can be optimized according to the required input range, output voltage and load characteristics.

2. opper Windings

Copper windings provide reliable electrical conductivity and support consistent long-term performance. Wire diameter and winding construction are selected according to the rated power, current and allowable temperature rise.

3. Low-Noise Design

The EI core assembly, winding arrangement and mechanical clamping can be optimized to reduce vibration and operating hum. This makes the transformer suitable for audio amplifiers and other noise-sensitive electronic equipment.

4. Secure Clamp-Mounted Construction

The metal mounting clamp holds the laminated core firmly and provides a convenient installation method. Clamp dimensions and mounting-hole positions can be adapted to the customer’s enclosure.

5. Application-Specific Engineering

The transformer can be designed around the customer’s actual operating voltage, load current, duty cycle, installation space and temperature-rise requirements—not only nominal voltage and power.

6. Flexible Protection Options

Thermal fuses, electrostatic shields, insulation systems and other protection options can be incorporated according to the application and applicable safety requirements.

Customization Options

Custom-Built to Match Your Equipment

Primary and Secondary Voltage

Single or multiple primary and secondary windings can be designed for different input and output voltage requirements.

Rated Power

Rated power can be adjusted according to the equipment load, operating time, installation conditions and allowable temperature rise.

Transformer Dimensions

Core size, overall height and installation dimensions can be customized to fit the available space inside your equipment.

Lead Wire Length and Color

Lead wire length, wire gauge, insulation type and color coding can be produced according to your wiring diagram.

Terminals and Connectors

Available connection options include flying leads, solder terminals, terminal blocks and customer-specified connectors.

Mounting Hardware

Metal clamps, mounting plates, screws, insulating pads and other installation accessories can be supplied where required.

Application Scenarios

Power Conditioning Equipment

These transformers support voltage conversion, electrical isolation and power distribution in selected power-conditioning equipment. Thermal protection and customized insulation systems are available when required.

Industrial Electronic Equipment

EI transformers are suitable for industrial controllers, test instruments, control cabinets and electronic machinery. Their robust laminated-core structure supports reliable operation in demanding environments.

Automation and Control Systems

They can supply low-voltage AC power to relays, contactors, sensors and control circuits. Multiple secondary windings can be designed for equipment requiring different operating voltages.

Test and Measurement Equipment

EI transformers provide isolated power for laboratory instruments, testing devices and measurement systems. Voltage regulation, no-load current and insulation requirements can be optimized for the application.

Why Choose ECKO?

Engineering and Manufacturing Support from Prototype to Production.

Transformer Manufacturing Experience Since 2000

ECKO has manufactured customized transformer and wound components for industrial and commercial applications since 2000.

Engineering Design Support

Our engineering team evaluates electrical specifications, installation restrictions, insulation requirements and operating conditions before production.

Prototype Production

Prototype transformers can be produced for electrical, mechanical and application testing before mass production.

100% Electrical Testing

Production units undergo specified electrical tests before shipment to verify conformity with approved requirements.

Custom Low-Volume Production

We support customized transformer projects with flexible production quantities, subject to product design and material requirements.

Material Traceability

Key production materials can be managed through documented purchasing, incoming inspection and production records.

Drawing and Sample Approval

Mechanical drawings, electrical specifications and prototype samples can be submitted for approval before mass production.

Production and Test Documentation

Inspection records, test reports and other technical documents can be provided according to the project requirements.

Quality Testing

Electrical and Mechanical Verification

Each transformer is inspected according to its approved technical specification and quality-control requirements.

Test voltage, duration, acceptance limits and test conditions are determined by the approved specification and applicable project requirements.

Customization Process

From Your Requirements to Mass Production

1. Submit Requirements

Provide the input voltage, output voltage, rated current or power, frequency, dimensions, application and required approvals.

2. Engineering Evaluation

Our engineers evaluate electrical feasibility, core selection, winding structure, insulation system, temperature rise and mounting requirements.

3. Quotation and Drawing

We provide a commercial quotation and, where applicable, a technical drawing or specification sheet for confirmation.

4. Prototype Production

Prototype units are manufactured according to the confirmed electrical and mechanical requirements.

5. Sample Approval

The customer tests the samples and confirms the electrical performance, dimensions and installation compatibility.

6. Mass Production

Production begins according to the approved sample, drawing, bill of materials and quality requirements.

7. Final Inspection

Finished transformers undergo the required inspections and electrical tests before packing and shipment.

Product FAQ

Frequently Asked Questions

1. What information should I provide for a custom EI transformer quotation?

Please provide the input voltage, output voltage and current, rated power, frequency, maximum dimensions, mounting method, lead-wire or terminal requirements, insulation class and application. A drawing, wiring diagram or existing sample will help us evaluate the project more accurately.

2. Can you customize the input and output voltages?

We can customize single or dual primary inputs, including 110V, 115V, 120V, 220V, 230V, 240V and 380V. Single, centre-tapped or multiple secondary windings can also be designed according to your equipment requirements.

3. Can I order prototype samples before mass production?

We support prototype production for electrical, mechanical and installation verification. Mass production will begin after the customer approves the sample, drawing and final technical specifications.

4. What electrical tests are performed before shipment?

Each production transformer undergoes the specified electrical inspections. Typical tests include turns ratio, no-load voltage, no-load current, full-load voltage, Hi-Pot and insulation resistance. Temperature-rise and other application-specific tests can be performed when required.

5. Can you manufacture EI transformers that meet UL or CE requirements?

We can evaluate the transformer construction, insulation system and materials according to the required safety standard. Certification status and marking authorization must be confirmed for the specific transformer model and customer project before ordering.

6. What are your MOQ and production lead time?

The MOQ and lead time depend on the transformer design, material availability, certification requirements and order quantity. Please send us your specifications and estimated annual demand so that we can provide an accurate quotation and delivery schedule.

Need a Custom EI Transformer for Your Audio Equipment?

Send us your input voltage, output voltage, rated power, available dimensions and mounting requirements. ECKO’s engineering team will evaluate your application and recommend a suitable transformer design.