香港别墅里的超级视听者－香港单身贵族Ben by《数码家居》（已更新第1页，全文刊登）

josephhb

[s:18] [s:18] [s:18]

杭州三潭印月

交易区新帖推荐

神秘的ＲＩＡＤ．特牺牲点解剖个中置与大家分享

http://www.jd-bbs.com/viewthread ... D%CC%B6%D3%A1%D4%C2[s:21] [s:21]

[ 本帖最后由 杭州三潭印月 于 2009-2-22 18:00 编辑 ]

GTO

原帖由 jimbim 于 2009-1-28 01:57 发表
这哥们简直sb一个， 纯粹器材发烧， 根本不懂基本电子原理， 什么配电房胡扯淡。
他奉行的宗旨价高为王， 不过一套100万， 不算太贵。

可悲啊！

人家不懂电子原理，你又懂得多少？
那个电源是扯谈？
你有去了解过平衡式电源的原理么？
http://www.equitech.com/faq/whatis.html

What is balanced power? When 120-volt AC power is balanced, one side of the circuit has +60 Volts to ground while the other has -60 Volts to ground. (Across the circuit, the usual 120 Volts is still present. Fig. 1) A European 230 Volt balanced power system has +115 Volts and -115 Volts to ground on the conductors. Standard unbalanced AC power systems have a "hot" conductor and a "neutral" conductor. In the US, the "hot" conductor nominally has 120 Volts to ground and the "neutral" conductor has 0 Volts to ground. (Fig. 2) Europe has a similar system but with 230 volts on the "hot" and 0 Volts on the "neutral." In a balanced power system, the voltages on the system's two output terminals are 180 degrees out of phase to each other with respect to ground. The system reference (ground) originates at the output center tap of an AC isolation transformer. In other words, the system's grounding reference (zero position) is located at the system's mean voltage differential or zero crossing point of the AC sinewave. This is a far more effective way to establish a reference potential for an AC system. The center tap is then grounded to Earth for electrical safety and for referencing shields. There is never any voltage or current present on the ground reference in a balanced power system. Transient voltages and reactive currents which normally would appear on the neutral and ground wires are also out of phase and likewise, sum to zero at the ground reference thereby canceling out AC hum and noise. A balanced AC Power system works the same way as a balanced audio circuit but with a higher amplitude. Both balanced audio and balanced AC incorporate phase cancellation or common mode rejection to eliminate noise.

双音道

晕菜！
无语问苍天！[s:33]