20A Toroidal Power Transformer for Audio Amplifiers 220V 24V 110V 70V Coil Shape

Name: 20A Toroidal Power Transformer for Audio Amplifiers 220V 24V 110V 70V Coil Shape
Brand: Hangzhou Udwells Technology Co., Ltd.
SKU: 2234740855

Zhejiang, ChinaHangzhou Udwells Technology Co., Ltd.

US$2.00-20.00

500 Pieces

Product profile

Customization

Available

Application

Power, Electronic, Instrument, Lighting, Rectifier, Audio

Phase

Single

Model NO.

20W

Core

Core-type Transformer

Cooling Method

Dry-type Transformer

Winding Type

Multi-winding Transformer

Certification

ISO9001

Usage

Single-phase Transformer

Frequency Characteristics

Low Frequency

Shape of Core

Ring

Operating Temperature

-40ºCTO +125ºC

Storage Temperature

-25ºCTO+85ºC

Customize

Yes

Type

Ei/Toroidal

Installation Method

Vertical/Horizontal/with a Base/with a Cover

Transport Package

Export Standard Carton and Strong Pallet

Specification

Toroidal Low Frequency Transformer

Origin

Zhejiang

Production Capacity

200000 PCS/Month

Key features

Wide Power Range: Available from 0.3VA to 2000VA to meet diverse audio and industrial needs.

High Efficiency Design: Toroidal structure ensures low leakage magnetism and minimal electromagnetic interference.

Flexible Customization: Supports custom voltage, current, shape, and installation methods based on samples or designs.

Multi-Application Versatility: Suitable for audio amplifiers, instruments, lighting, rectifiers, and general power supplies.

Compact and Lightweight: Smaller volume and lighter weight compared to traditional EI transformers of same power.

Quality Certified: Manufactured under ISO9001 certification with 100% finished product inspection.

Multiple Installation Options: Supports vertical, horizontal, base-mounted, or covered installation methods.

Company profile

High Repeat Buyers ChoiceFast DeliveryPrivate MoldQuality Assurance

Hangzhou Udwells Technology Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤4.30h

AI-Powered supplier vetting

SummaryHANGZHOU UDWELLS TECHNOLOGY CO. Ltd. was founded in 2008 and reports a self-built plant exceeding 15,000 square meters, more than 10 production lines, Europe as a primary export market, and peak-season order fulfillment within 15 working days. It provides multiple customization options, ODM services, and has launched new products within the past year. The supplier also reports OEM service for well-known brands and quality assurance in its quality-control processes. However, no R&D audit documentation, SDK, approved-supplier list, written service procedures, corrective/preventive-action procedures, or complaint-handling procedures were available. Overseas warehouses, showrooms, agents or branches, and offline trade-show participation were not reported. Financial information is insufficient for a credibility judgment, and sustainability-related fire-drill and environmental-assessment status is unknown.

After-Sales capabilityTechnology engineers are responsible for technical support during production and after-sales service, but the supplier has no written procedures or records for effective service assessment, corrective and preventive actions, or customer complaint handling. It also has no overseas warehouse, showroom, agent, or branch, limiting evidence of structured or localized after-sales support.

R&D capabilityThe supplier reports new products within the past year, ODM capability, customization-related R&D services, and use of PS and CAD. It also reports OEM service for well-known brands. Countervailing evidence includes only one year of total R&D engineer experience, no available SDK, and no R&D design-input, output, review, verification, or validation documents for audit.

Production capacityThe supplier reports a self-built plant exceeding 15,000 square meters, more than 10 production lines, complete testing facilities, and peak-season order fulfillment within 15 working days. These explicit operating-scale and delivery statements support a production-capability advantage, although the number of quality-control staff is listed as unavailable.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, flexible customization, and minor customization. It also provides ODM services, demonstrating broad stated customization coverage.

Client casesThe supplier states that it provides OEM services for well-known brands and identifies Europe as a primary export market. These statements indicate some brand and export experience, but no customer names, project details, order references, or verifiable case documentation are provided.

Product Q&A

Q:What parameters are needed to produce a custom transformer?

Please provide Input Voltage (with fluctuation range), Output Voltage and Current (for each group), Rated Power (VA/W), Frequency (50Hz/60Hz), Construction type (Toroidal/EI/R-type), Installation method, and Insulation Grade.

Q:How does a Toroidal transformer compare to an EI transformer?

Toroidal transformers offer higher efficiency, very little leakage magnetism/interference, and are smaller/lighter, but are more complex to produce and costlier. EI transformers are larger/heavier, have higher interference, but are lower cost and easier to maintain.

Q:Is customization available for this product?

Yes, customization is available. Options include customization from samples, designs, full customization, flexible customization, and minor customization.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 2000 pieces.

Q:What are the payment terms and lead times?

Payment terms are T/T. Lead time is within 15 workdays during off-season, and within one month during peak season.