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你知道吗?

 

圣诞舞会的起源可以追溯到19世纪中冶的德国Thüringen。

1867年，圣诞舞会开始大量举办; 然而，它原有的传统魅力丝毫未减。

 

13年后，美国商人伍尔沃斯(Frank Winfield Woolworth)在美国进口了薄壁玻璃圣诞球，并取得了巨大的成功。

如今，有许多漂亮的圣诞球是用微型led灯点亮的。

 

徳欧泰克公司提出了一种可调光LED驱动器的新设计理念它不仅用于圣诞舞会，而且还被用于现代LED灯条。

 

 

这个新 应用 解释了与 Diotec 的 单相和 三相的整流桥使用的时候，半导体元件中的热传递机制。

此外，它还描述还决定桥堆输出电流估算以及测量环境温度的方法。

 

This application note explains the mechanisms of heat transfer in semiconductor components along with Diotec’s datasheet parameters of 1ph and 3ph Bridge Rectifier. It further describes a way to determine whether a bridge is suitable for a given output current and ambient respectively case temperature.

The MMTL431B extends our family of Shunt Regulators and Precision Voltage References. It offers a reduced minimum regulation current I_K(min) of typically 30 µA, and maximum 300 µA. This makes it ideally suited for secondary side control of flyback converters, used in offline power supplies and battery chargers, but also replacement of low voltage Zener diodes (< 10 V). Especially in latter case it is often desired to have a temperature compensated, stabilized voltage at low current consumption. With just few external components, the MMTL431B allows for exactly such function.