期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于PSR的反激式开关电源的设计 被引量:2
1
作者 赵文群 李翠华 丁涛 《通信电源技术》 2017年第4期119-120,共2页
文中通过对原边反馈技术(PSR)原理的介绍,以及其优缺点的讨论,设计了一款基于UCC28710D的原边反馈反激式开关电源。此电源输入电压范围为85~265 V,具有成本低、体积小的优点。电源电路可实现在无需使用光耦合器的情况下提供恒定电压和... 文中通过对原边反馈技术(PSR)原理的介绍,以及其优缺点的讨论,设计了一款基于UCC28710D的原边反馈反激式开关电源。此电源输入电压范围为85~265 V,具有成本低、体积小的优点。电源电路可实现在无需使用光耦合器的情况下提供恒定电压和恒定电流输出调节,确保反馈精度,减小反馈误差。 展开更多
关键词 原边反馈技术 反激式电源 UCC28710D psr-cc PSR-CV
下载PDF
From Poincaré’s Electro-Gravific Ether (1905) to Cosmological Background Radiation (3°K, 1965)
2
作者 Yves Pierseaux 《Journal of Modern Physics》 2020年第9期1410-1427,共18页
<p align="justify"> <span style="font-family:Verdana;"></span><span style="font-family:Verdana;"></span>It is well known that Einstein published in June 1905... <p align="justify"> <span style="font-family:Verdana;"></span><span style="font-family:Verdana;"></span>It is well known that Einstein published in June 1905 his theory of Special Relativity (SR) without entirely based on space-time Lorentz Transformation (LT) with invariance of Light Velocity. It is much less known that Poincaré published, practically at the same time, a SR also based entirely on LT with also an invariant velocity. However, according to Poincaré, the invariant is not only that of light wave but also that of Gravific Wave in Ether. Poincaré’s Gravific ether exerts also a Gravific pressure, in the same paper, on <i>charged </i>(e) Electron (a “Hole in Ether” according to Poincaré). There are thus two SR: That of Einstein (ESR), without ether and without gravitation, and that of Poincaré (PSR), with Electro-Gravific-Ether. The crucial question arises then: Does “SPECIAL” Poincaré’s (e)-G field fall in the framework of Einstein’s GENERAL Relativity? Our answer is positive. On the basis of Einstein’s equation of gravitation (1917) with Minkowskian Metric (MM) and Zero Constant Cosmological (CC) we rediscover usual Static Vacuum (without <i>charge e </i>of electron). On the other hand with MM and <i>Non-Zero </i>CC, we discover the gravific field of a Cosmological Black Hole (CBH) with density of dark energy compatible with expanding vacuum. Hawking’s Stellar Black Hole (SBH) emits outgoing Black Radiation, whilst Poincaré’s CBH emits (at time zero) incoming Black Radiation. We show that Poincaré’s G-electron involves a (quantum) GRAVITON (on the model of Einstein’s quantum photon) underlying a de Broglie’s G-Wave. There is therefore a Gackground Cosmological model in Poincaré’s basic paper which predicts a density and a temperature of CBR very close to the observed (COBE) values. </p> 展开更多
关键词 Poincaré’s Special Relativity (PSR) with Gravitation PSR in Einstein’s GR with CC Poincaré’s Cosmological Black Hole Poincaré’s Incoming Cosmological Black Radiation versus Hawking’ s Outgoing Stellar Black Radiation Poincaré’s Gravitational Pressure on Electron (“Ge”) Vacuum without Charge e (ESR) Vacuum with Charge e (PSR) Lightlike Quantum Graviton
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部