Customized 300W pure copper wire toroidal transformer low frequency
transformer for audio amplifiers
1.Audio Equipment
Among the toroidal transformer products of this factory, there are
first and foremost products that are well-known in audio
equipment,such as high-performance products that can be used as
power transformers in Class 3 high-power hi-fi amplifiers and power
transformers for medium and small power audio equipment. Toroidal
transformers can be used for power ranges from 6VA to 1000VA.
2.Product Advantages
The core of the toroidal transformer is made of high-quality
cold-rolled silicon steel sheets (generally below 0.35mm in
thickness), which are seamlessly rolled, which makes its core
performance better than the traditional laminated core. The coil of
the toroidal transformer is evenly wound on the iron core, and the
direction of the magnetic field lines generated by the coil almost
completely coincides with the magnetic circuit of the iron core.
Compared with the laminated type, the excitation energy and core
loss will be reduced by 25%, which brings the following series of
the advantages:
1) The iron core with high electrical efficiency has no air gap,
the stacking coefficient can be as high as 95% or more, the
magnetic permeability of the core can be 1.5~1.8T (the laminated
core can only be 1.2~1.4T), the electrical efficiency can be as
high as 95% or more, no-load .The current is only 10% of the
laminated type.
2) Small size and light weight :Toroidal transformers can reduce
the weight by half compared to laminated transformers. As long as
the cross-sectional area of the core is kept equal, the toroidal
transformer can easily change the ratio of the length, width and
height of the core, and can be designed to meet the requirements.
3) Less vibration and noise, the iron core has no air gap, which
can reduce the iron loss.
3.Shape parameters
| Full Loading Power | Product volume | Mounting plate | Hole distance | Pore size | Weight |
| 20W(MAX) | 70*25*35mm | 70*70mm | 60*60mm | 5*8mm | 0.53Kg |
| 40W(MAX) | 90*41*45mm | 90*90mm | 80*80mm | 5*8mm | 0.53Kg |
| 50W(MAX) | 95*41*45mm | 90*90mm | 80*80mm | 5*8mm | 1.1Kg |
| 70W(MAX) | 100*40*45mm | 90*90mm | 80*80mm | 5*8mm | 1.3Kg |
| 90W(MAX) | 103*40*43mm | 100*100mm | 90*90mm | 5*8mm | 1.47Kg |
| 120W(MAX) | 100*41*45mm | 90*90mm | 80*80mm | 5*8mm | 1.50Kg |
| 150W(MAX) | 98*38*51mm | 90*90mm | 80*80mm | 5*8mm | 2.05Kg |
| 200W(MAX) | 110*45*53mm | 100*100mm | 90*90mm | 5*8mm | 2.23Kg |
| 240W(MAX) | 113*47*54mm | 120*120mm | 110*110mm | 5*8mm | 2.5Kg |
| 300W(MAX) | 122*45*56mm | 120*120mm | 110*110mm | 5*8mm | 2.9Kg |
| 400W(MAX) | 134*46*66mm | 120*120mm | 110*110mm | 5*8mm | 4.1Kg |
| 500W(MAX) | 133*51*63mm | 140*140mm | 130*130mm | 5*8mm | 4.6Kg |
| 1000W(MAX) | 165*52*79mm | 160*160mm | 150*150mm | 5*8mm | 8.2Kg |
| 1200W(MAX) | 180*54*78mm | 180*180mm | 170*170mm | 5*8mm | 10.6Kg |
| 1500W(MAX) | 180*54*78mm | 180*180mm | 170*170mm | 5*8mm | 11.5Kg |
4. Electrical Characteristics
| Full Loading Power | Input Voltage | Frequency | No Load Voltage | Full Loading Current | No Load Iron Loss | Hi-Pot Test | Insulation Resistance |
| 20W(MAX) | AC220V±10% | 50Hz/60Hz | AC12.0V±2% | 1.66A(MAX) | ＜0.9W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 40W(MAX) | AC220V±10% | 50Hz/60Hz | AC12.5V±2% | 3.3A(MAX) | ＜2.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 50W(MAX) | AC230V±10% | 50Hz/60Hz | AC5-0-5V±2% | 5.0A(MAX) | ＜2.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 70W(MAX) | AC230V±10% | 50Hz/60Hz | AC14.5V±2% | 5.0A(MAX) | ＜3.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 90W(MAX) | AC220V±10% | 50Hz/60Hz | AC28+9+16V±2% | 2.1+1.7+1A(MAX) | ＜3.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 120W(MAX) | AC220V±10% | 50Hz/60Hz | AC0-20-80-100V+1V±2% | 6A(MAX) | ＜3.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 150W(MAX) | AC220V±10% | 50Hz/60Hz | AC22V±2% | 6.8A(MAX) | ＜3.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 200W(MAX) | AC220V±10% | 50Hz/60Hz | AC12V*2±2% | 8.4A(MAX) | ＜4.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 240W(MAX) | AC220V±10% | 50Hz/60Hz | AC24±2% | 10A(MAX) | ＜4.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 300W(MAX) | AC220V±10% | 50Hz/60Hz | AC24.5±2% | 12.5A(MAX) | ＜5.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 400W(MAX) | AC220V±10% | 50Hz/60Hz | AC70.5±2% | 5.7A(MAX) | ＜6.0W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 500W(MAX) | AC220V±10% | 50Hz/60Hz | AC36±2% | 13.9A(MAX) | ＜4.5W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 1000W(MAX) | AC240V±10% | 50Hz/60Hz | AC36.5±2% | 27.5A(MAX) | ＜10W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 1200W(MAX) | AC220V±10% | 50Hz/60Hz | AC45+36V±2% | 13.3+16.6A(MAX) | ＜12W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
| 1500W(MAX) | AC415V±10% | 50Hz/60Hz | AC48V±2% | 31.2A(MAX) | ＜20W | Pri-Sec:DC2500V | Pri-Sec:≥500MΩ |
FAQ
1. Who are we?
We are based in Guangdong, China, start from 2011,sell to North
America(40.00%),Southeast Asia(30.00%),South America(10.00%),
Western Europe(10.00%),Mid East(10.00%). There are total about
51-100 people in our office.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Toroidal Transformers, Audio Transformers, High/Low Frequency
Transformers, Power Inductors, Wireless Charging Coils.
4. Why should you buy from us not from other suppliers?
TEAM:Independent engineer team ,to check drawings, provide
quotation, write machining process,guide production.
OEM:Advanced production technology,accept oem customization.
DELIVERY: Independent PMC department to make production plan and
manage delivery.
