作者：百年不渡分类：未来幻想点击：937211次下载：321909次大小：70M 日期：2026-08-26

七宗罪

减少铝材依赖保时捷柏林之声400W低音炮将用上氮化镓_我的网站

霸王别姬

A | 8月25日消息，近日，保时捷公布一项车载音响创新技术，将氮化镓（GaN）半导体引入柏林之声3D高端环绕音响系统，主要用于400W低音炮功放单元。 Jakarta, Oct 20 (UNI) The deaths of nearly 100 children in Indonesia has prompted the country to suspend sales of all syrup and liquid medication.
It comes just weeks after a cough syrup in The Gambia was linked to the deaths of nearly 70 children, reports BBC.
Indonesia said some syrup medicine was found to contain ingredients linked to acute kidney injuries (AKI), which have killed 99 young children this year.
It was not clear if the medicine were imported or locally produced.
On Thursday, Indonesian health officials said they had reported around 200 cases of AKI in children, most of who were aged under five, the BBC reported.
Earlier this month, the The World Health Organization (WHO) issued a global alert over four cough syrups that were linked to the deaths of almost 70 children in The Gambia.
The WHO found the syrups used there -- made by an Indian pharmaceutical company -- contained "unacceptable amounts" of diethylene glycol and ethylene glycol. The syrups have been "potentially linked with acute kidney injuries", said the organisation.
Indonesia's Health Minister on Thursday said the same chemical compounds were also found in some medicines used locally.
"Some syrups that were used by AKI child patients under five were proven to contain ethylene glycol and diethylene glycol that were not supposed to be there, or of very little amount," said Budi Gunadi Sadikin. He did not disclose how many cases involved the toxic medicines.
Indonesian authorities said the cough syrups used in The Gambia were not sold locally.
Indonesian authorities have so far not disclosed the brands or types of syrup medicines linked to sick children - instead just temporarily banning the sale and prescription of all syrup and liquid medicines.
UNI MR。

B | 这是全球首个计划量产装车的氮化镓车载高端音响方案，预计2027年随新一代保时捷车型正式落地。该项目由保时捷联合斯图加特大学共同研发，2023年年中立项，2024年春季完成原型开发，已经申请多项相关专利。据介绍，氮化镓常见于手机快充头，相比传统硅基芯片，功率转换损耗更低，工作过程发热量大幅下降，用在音响系统上会专门负责400W低音炮的电压转换，输出功率保持不变的前提下，功放散热压力显著降低。最直观的变化体现在散热硬件上：功放散热器重量可以减少约20%，电容、电感等周边元器件也能够同步小型化，整套功放变得更加紧凑轻巧。此外，传统功放散热器大量使用铝材，而铝冶炼属于高耗能工艺，应用氮化镓后，散热器减重，直接减少铝材消耗，帮助降低零部件生产环节碳排放，实现减重与可持续的双重目标，对追求轻量化的跑车平台意义突出。

C | 保时捷表示，这次升级核心是提升电源转换效率，并非单纯强化低音音量，更低的热损耗，也意味着车载电能浪费变少。目前氮化镓仅率先应用在低音炮功放模块，保时捷也正在评估，未来把该半导体技术拓展至车内更多电源转换部件。 保时捷把快充领域成熟的第三代半导体移植到车载Hi-Fi上，也给汽车电子打开新思路，也就是在有限车身空间内实现更高功率、更少材料消耗。