Toroidal Transformers

Toroidal Transformers

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Supplier Details

Develop(HK) International Holding Group Co., Ltd.

Free Member  (2011)

[ Shiji, GU, China ]

Business Type:  Manufacturer

Supplier has 20 products

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Product Description

1300VA toroidal transformers for professional amplifier
Primary: 0-----220V
Secondary: 0-----16V 1A
0-----23V 1A
0-----23V 1A
75V--0V---75V 4A
75V--0V---75V 4A
Power: 1260VA
Weight: 8.7kg
Size: OD?160mm, H?90mm
Rated no load current?80mA (220V 50Hz)
Primary lead wire with 40mm white fibre tube
Black epoxy resin: primary lead wire to top side, 11mm hole in center.
Use dia. 100mm metal plate and rubber plate in bottom side.
Toroidal transformers frequency: All of our transformers are designed for 50/60Hz.
Toroidal transformer voltage regulation: this is the power lost (heat) in the normal operation of the transformer.
Voltage regulation=(no load voltage-load volatge)/no load voltage*100%
Example: no load voltage 18v, load voltage 17v. voltage regulation=(18-17)/18*100%=6%
A regulation of 6% means the transformer is 94% efficient
Manufactured to Class B 130oC
Class Max Temperature Max Temp Rise
A 105oC 65oC
E 120oC 80oC
B 130oC 90oC
F 155oC 115oC
Toroidal transformers losses do not exceed 2.5watts per kilo (core weight X 2.4) / input voltage

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About Us

The headquarter of Develop (HK) International Holding Group Co., Ltd. is located in the most prosperous city of Asia-Hong Kong. Our company is one of the largest professional transformer, adapter, switching power supply, led power supply, electronic ballast manufacturers.
We have our own production base which named Guangzhou Huayun Electrical Co., Ltd. located in Guangzhou, China which made up of three factories.
The first factory is specializing in transformer such as toroidal transformer, EI transformer, single phase transformer, three phase transformer, control transformer and audio transformer.
The second factory is specializing in lighting power supply such as electronic transformer, electronic ballast, led driver and led power supply.
The third factory is specializing in linear adapter, switching adapter, laptop adapter, car adapter and switching power supply.
With many years effort, we have had rich experience in development of electronic products. In order to meet market demand and provide quality products, we have established a set of scientific and feasible cost control system from purchasing to production and a set of strict quality control system from raw materials to products .Our products have got CB,UL,FCC,CE,KC,PSE,TUV/GS,BS,SAA,C-Tick, RoHs, LVD and EMC approval.
Our products are widely used for many products such as machinery equipment ,audiovisual Equipment, security monitoring, network, multi media digital, electric tools, medical equipment, vehicle mounted electrical appliance, LED lighting , LCD display etc.
Because of our good quality, favorable price and good service, our products and our company enjoy a very high reputation in Europe, U.S.A, Australia and Asia Market.

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