What is the lead time for production?

Lead time is within 15 workdays or one month, regardless of peak or off-peak season.

Do you offer OEM and ODM services?

Yes, we provide OEM, ODM, and full customization services including from samples and designs.

Toroidal Audio AC Single Phase 220V to 24V Transformer Dry Low Frequency 400W Isolation

Name: Toroidal Audio AC Single Phase 220V to 24V Transformer Dry Low Frequency 400W Isolation
Brand: Hangzhou Udwells Technology Co., Ltd.
SKU: 2242365765

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 covering various application needs.

Customization Options: Full customization available including voltage, power, and installation methods.

Multiple Installation Types: Supports vertical, horizontal, with base, or with cover installation.

High Efficiency Design: Toroidal core design offers high efficiency with low leakage magnetism.

ISO9001 Certified: Manufacturing process meets international quality management standards.

Low Frequency Performance: Optimized for low frequency applications in audio and power systems.

Dry Type Cooling: Dry-type transformer design ensures safe and reliable operation.

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: ≤4.65h

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 specifications are needed for a 220V to 12V transformer?

Please provide input voltage with fluctuation range, output voltage and current, rated power (VA/W), frequency (50Hz/60Hz), construction type (toroidal/EI/R), installation method, and insulation grade.

Q:What is the difference between VA and W?

For resistive loads, VA equals W. For inductive loads like motors, W is less than VA. Select based on apparent power (VA) with a 20%-30% safety margin.

Q:Which should I choose: Toroidal or EI transformer?

Choose Toroidal for high efficiency, low interference, and high-end audio. Choose EI for general industrial use, lower cost, and easier maintenance.

Q:What is the minimum order quantity?

The minimum order quantity is 2000 pieces.

Q:What are the payment terms?

We accept T/T (Telegraphic Transfer) as the payment term.