About Toroidal Transformer

Greater Efficiency

l      The toroidal form of transformer offers excellent efficiency for a given size and weight. 

l      The overall efficiency of toroids is t*ically 85 to 95%, and with customer design can be even higher. Due to the high quality, tightly wound, grain-oriented silicon steel core, very low core losses and off-load magnetizing currents can be achieved, adding to the overall efficiency. 

Smaller Size and Weight

The toroidal core provides a virtually perfect magnetic circuit, eliminating the inherent air gaps of conventional EI (laminated-bobbin) transformers. Higher flux densities, along with full utilization of the core area, result in a *aller component-t*ically 50~60% of the size and weight of laminated components.

Low Noise and Low Stray Flux Field

l      Because the magnetic circuit is so complete and the uniform distribution of the windings over the core, a toroidal transformer is very quiet in operation-with low or even zero mechanical hum caused by magnetostriction.

l      Toroidal transformers also exhibit very low levels of noise-inducing stray magnetic fields (t*ically 8 times lower than laminated stack t*e transformers). This makes the toroid the perfect choice for sensitive electronic systems such as high-gain preamplifiers , lighting and instrumentation.

Good Regulation

l      The winding configuration of toroidal transformers results in very low leakage inductance. This inductance is produced when a percentage of the magnetic flux produced by the primary is not utilized by the secondary, therefore not generating any voltage-a common characteristic of laminated stack transformers.

l      Because toroidal winding results in tight coupling, virtually all the flux is utilized (and not left to radiate and interfere with circuitry). This enables tight regulation, with off-load secondary voltages lower than laminates. In addition, lower copper loss results in less power being wasted as heat.

Ease of Mounting

The majority of toroidal transformers are mounted with one central screw, speeding production time and lowering the parts count of mounting hardware. For special applications, custom mounting methods can easily be provided for greater production efficiency.

Packaging Versatility

A toroidal transformer with specific characteristics can be varied in height and diameter to meet product-design requirements. This enables the transformer to meet enclosure space constraints. Tall cylinder or flat disc styles can be produced to meet retrofit space requirements or low-profile applications.

Markings

Aazon’s Toroidal Transformers comply with most of the world s major safety standards and are built under CE and UL marked.

Lifetime of Toroidal Transformer

Aazon’s Toroidal Transformers provide lifetime warranty. This is much longer than LEDs’ lifetime or other t*es of power supply embedded in LED lights.

*率

在既定的尺寸和重量要求下，环型变压器可设计至*高的效率。其整体效率通常是85％ 至95％，客制化之设计甚至于可以更高。由于高质量硅钢之晶粒排列整齐，铁芯并紧密缠绕，可**低的磁芯损耗和空载磁电流，增加了整体效率。

较小的尺寸和重量

环型变压器提供了相较于传统堆栈式EI变压器，一个几乎*的磁电路。其通量密度较高，同时充分利用环型之*，故其大小和重量约*为EI的50~60%。

低噪声和低杂散磁场

l由于环型变压器的磁路*完整，铜线缠绕又均匀分布，故其能*安静的运作，产生*

        低、甚至于*”磁力控制”(magnetostriction)所引起的机械嗡嗡声。

l环型变压器产生*低的噪声，包括”杂散磁场”（stray magnetic fields），通常*为堆栈

        式EI变压器的1/8。故环型变压器为运用于敏感的电子系统，如高增益前置放大器，照明和仪

        表之*佳选择。

良好的变动率

l由于环型变压器具良好的绕线结构，故产生*低的漏电感。反之，当一次电压之部份的磁场

        未被二次电压所运用，所造成的电感*电压，此为堆栈式EI变压器共同的缺点。

l由于环型线圈紧密耦合，几乎*的磁通量皆被*利用，不迼成辐射和干扰电路。这使得空

        载二次电压低于堆栈式EI变压器。此外，其铜损会亦较低，故产生较低的热能。

易于安装

大多数的环型变压器均采一支中心螺丝的安装方式，以加快组装时间。对于*应用，事先设计的安装方式亦可以很容易地为*生产效率。

包装的多功能性

环型变压器可制作成不同的高度和直径，以满足产品设计要求。这使得变压器的尺寸，可依机箱及产品的空间限制有不同的变化。例如，高大的圆柱式或低圆盘式皆可。

安规标志

Aazon的环型变压器已取得CE和UL之安规验证，并*合*主要的*标准，各式灯具亦全系列使用此变压器，并申请安规中。

保固服务

Aazon的”线性电源设计”可提供终身保固服务，可确认此比一般厂家所采用电子式电源的寿命更为*。