国外网友科学论：电源线的重要性，2米的那段如何改变你的音乐世界。

AV风暴

killerfish 发表于 2020-8-3 09:48
我在我每个论坛都说我听得出区别。
且以上说法本人不负任何法律责任

还不如XX大师，至少人家还有托梦依据。

killerfish

交易区新帖推荐

AV风暴 发表于 2020-8-3 09:55
还不如XX大师，至少人家还有托梦依据。

我没，，，我一直都是我要我以为，不要你以为

青岛子弹

看下同样的问题，歪果仁是如何聊天的。

https://forum.psaudio.com/t/the-importance-of-power-cable/17420

The importance of power cable（电源线的重要性）虽然也分为两派，交流的方式值得借鉴。

青岛子弹

PS Audio CEO 保罗的回答。

Think of it this way. The regenerator needs an adequate supply of current without restriction. The incoming power cable is always going to restrict the regenerator’s ability to receive that to some extent. Further, when the regenerator is doing its work, it’s putting a lot of strain on the incoming AC in the form of big current draws and noisy power supply activity. The incoming power cable thus has a big role to lay in keeping things quiet and providing a big enough “fire hose” to feed the hungry regenerator.

青岛子弹

"Not everything that can be counted counts, and not everything that counts can be counted."
- Albert Einstein.

青岛子弹

交易区新帖推荐

Introduction: “There are a lot of misconceptions about power transmission and power quality that make it difficult for some people to understand why a power cord makes a sonic difference. The first question is – do power cords make any difference at all? There is no sense in talking about theories of operation if we can't agree that there is an audible effect. Most of the thousands of people that use our power cords started out as skeptics and have answered that question for themselves and have found that power cables and power conditioners can have a profound impact on performance. And no - I do not care to debate with people that have not done the simplest of tests about whether power cords work or not. The only cases where a high quality cord does not have significant effects is when it is used with a poor quality power conditioner that acts as a high impedance to instantaneous current flow. “

Misconception #1: AC Power is like water coming from a large power tank, flowing through several 10s of feet of power hose into a component. This implies that the component is at the end of this system.

Answer: “Actually, the component sits between two power conductors: the hot and the neutral. AC power oscillates (alternates) back and forth at a 50-60 Hz rate. So power does not pour into the component at all. The component's power supply is within a complex network of wires and connectors. ALL of the wire and connectors can and do affect the performance of the component's power supply.”

Misconception #2: AC power can be contaminated just like water in a hose. This implies that once the water is contaminated at some point up stream, that is must be cleansed before it arrives at the audio component.

Answer: “As stated in #1, the component is not at the end of the power hose. It is between two power hoses and the current is oscillating back and forth. Further, current is not like water at all. Electrons cannot be contaminated. There are two aspects to power transmission: the electromagnetic wave and the current flow. The current itself cannot be contaminated but the electromagnetic wave can be modulated with other frequencies. We usually call these other frequencies noise or Electromagnetic Interference (EMI). Within the various parts of a power circuit there may be EMI in certain parts that is not present in others. Electromagnetic energy can be transformed or redirected to lessen their effects.

"Some power cords use capacitors, inductors, or ferrites in an attempt to control the electromagnetic fields around the audio component. The success of such an approach is completely dependent upon the specific design and the reactance of the power supply of the component to which the power cable is attached.”

Misconception #3: There is up to a hundred feet of wire in the walls, so the last 6 feet of power cord can't possibly make any difference.

Answer: “The power cord is not the last 6 feet, it is the first 6 feet from the perspective of the component. As stated in #1 the local current and electromagnetic effects directly affect the sonic performance of the component.”

Misconception #4: There is a tremendous amount of electrical interference and EMI coming from outside the home that we need to protect our equipment from. This implies that we need some sort of power conditioner or filter to protect the equipment.

Answer: “Most of the EMI that affects the audio quality of a system is generated by the audio components themselves. Electromagnetic waves that traveling through space dissipate in power at the square of the distance from the source. Further, very high frequencies that propagate through the power circuit do not survive for long. Power lines present a high impedance to MHz and GHz signals due to the relatively high inductance of power lines.

"A primary source of audible sonic degradation is caused by the power supplies in our audio/video components. Most components use FWBR (full wave bridge rectifier) power supplies that generate an incredible amount of transient noise when the rectifiers switch off. The design of a power cable can significantly affect the reactance of these signals within the power supply. The power cable is effectively part of the primary winding of the power transformer. The transition between the various metals used in a power cable and its connectors can cause electromagnetic reflections and diode-like rectification of the noise impulses as they propagate away from the power supply. If the power cable presents a high impedance to these signals they will be reflected back into the power supply where they will intermodulate, thus increasing the high frequency noise levels of the component. Most power supply filters are ineffective at blocking very high frequency noise components and much of it is passed through to the DC rails. The sonic effects of this include: high background noise levels, blurred or slurred transients and a general lack of clarity and purity of the sound or visual image.”

Misconception #5: There is some sort of conspiracy among audio designers that keeps them from producing a "proper" power supply that is not affect by power cable quality.

Answer: “This concept is like saying that if a speaker where properly designed, you wouldn't need to use a good quality speaker cable. PowerSnakes have been tested with the most modest of mid-fi equipment and the most exotic state of the art components. We have yet to find a component that cannot be improved by replacing the power cord.

"As long as power supply design is based upon FWBRs or switching supplies, the power cord will always be significant.”

Misconception #6: High-end power cords just increase the circuit capacitance acting as a high-frequency shunt

Answer: “There are some power cords that ARE designed this way. Some even insert capacitors within the cable to further increase capacitance. This approach has some positives and many negatives including the reactive interference with the way many power supplies are designed.

"Capacitance alone cannot account for the differences in a power cord's performance. There are some high-end power cords that are very effective that have virtually immeasurable levels of capacitance. These cables are usually designed around hollow tubes with the conductors inside. The conductors are several inches apart and cannot significantly affect the capacitance of the power circuit.”

Misconception #7: Power cords are just like speaker cables; always the shorter the cable the better.

Answer: “Some speaker cable designers would argue that a speaker cable below a certain length is not better. We will let them address the issue if they desire.

"A speaker cable conducts an audio signal from the power amplifier to the speaker. The distance is quite small, on the order of a couple of feet to several feet. The quality of a speaker cable is determined by how well it can transmit the signal from the amplifier to the speaker without alteration.

"A power cable on the other hand is not transmitting a signal. It is conducting A.C. power and its sonic superiority will be determined by its ability to deliver current (steady-state and instantaneous) and its ability to deal with the EMI effects of the components to which it is attached.

"Since a power cord is composed of a hot and neutral wire that the component sits between, a change in the length of the cord will increase the size of the "buffer" around the component. In general, I would not recommend a power cord that is shorter than 3 feet or 1 meter in length. But subtle degrees of audio performance are not the only consideration when putting together an audio system. Esthetics is also important especially when the system is located in a beautiful home. I just point out the performance differences so that people can make an informed decision when determining the optimum length for their cables.

"There is much more that can be discussed about power delivery but for the sake of brevity I'll cut it short at this point. On a personal note I would like to say that I was an audiophile long before I was a manufacturer of audio products. Before Shunyata Research I designed high speed networking devices and can tell you that there is a lot more money to be made in the computer industry. Like many of the manufacturers of high-end audio components, I design my products for myself and for the love of music. If other people like what I have created - great. If after trying our product you prefer another - great. There is a wide diversity of preference and subjective perception among individuals. Thank goodness there is also a wide diversity of manufacturers that create products to serve a variety of tastes.”



Author：Caelin Gabriel

青岛子弹

Introduction to the Caelin Gabriel Patent

Source file：United States Patent and Trademark Office (USPTO). 文件来源：美国商标专利局（USPTO）

Drift current coulombic storage apparatus
Patent number: 10031536
Abstract: A circuit for improving instantaneous current flow in an AC-to-DC power supply for an electronic device, said circuit positioned immediately prior to an AC input for the AC-to-DC power supply and providing a reserve of electrical charge independent of the inductive impedance of the AC power line.
Type: Grant
Filed: January 4, 2017
Date of Patent: July 24, 2018
Assignee: Gabriel Patent Technologies, LLC
Inventor: Caelin Gabriel

DEVICE THAT USES ELECTROMAGNETIC POLARIZATION TO IMPROVE AUDIO CABLE SOUND QUALITY
Publication number: 20180183227
Abstract: Method and apparatus for improving sound quality in audio cables, including a plurality of equally spaced conductive discs separated by a gap and configured in a generally linear array, each of the discs having an annular shape with planar sides, an outer diameter, a center hole having a diameter, and a thickness. The disc array is placed around an audio signal cable such that the planar sides of the discs are oriented parallel to one another and perpendicular to signal cable axis. The spacing between discs is approximately four to ten times the thickness of said discs, and the disc diameter is between 2 and 4 times the diameter of the center hole.
Type: Application
Filed: December 4, 2017
Publication date: June 28, 2018
Applicant: GABRIEL PATENT TECHNOLOGIES, LLC
Inventor: Caelin Gabriel

DEVICE THAT IMPROVES INSTANTANEOUS CURRENT FLOW INTO AN AC TO DC POWER SUPPLY
Publication number: 20170194874
Abstract: A circuit for improving instantaneous current flow in an AC-to-DC power supply for an electronic device, said circuit positioned immediately prior to an AC input for the AC-to-DC power supply and providing a reserve of electrical charge independent of the inductive impedance of the AC power line.
Type: Application
Filed: January 4, 2017
Publication date: July 6, 2017
Inventor: Caelin Gabriel

Method to reduce signal distortion caused by dielectric materials in transmission wires and cables
Patent number: 8912436
Abstract: A method and apparatus for reducing dielectric polarization and dielectric relaxation within a signal wire by partially neutralizing the electric charge differential within the dielectric material between the signal conductor and the surrounding insulating dielectric material.
Type: Grant
Filed: September 30, 2011
Date of Patent: December 16, 2014
Assignee: Gabriel Patent Technologies, LLC
Inventor: Caelin Gabriel

Ferroelectric field coupling device for improved noise reduction in AC power lines
Patent number: 8658892
Abstract: A method to increase the coupling effectiveness of an AC electric field to a ferroelectric substance, thereby improving noise reduction. The method employs an electric field chamber, preferably a hollow conductive tube, to distribute the radiated electric field over a larger effective area without affecting the inductance or transmission qualities of the AC power conductor.
Type: Grant
Filed: January 6, 2012
Date of Patent: February 25, 2014
Assignee: Gabriel Patent Technologies, LLC
Inventor: Caelin Gabriel

FERROELECTRIC FIELD COUPLING DEVICE FOR IMPROVED NOISE REDUCTION IN AC POWER LINES
Publication number: 20120175163
Abstract: A method to increase the coupling effectiveness of an AC electric field to a ferroelectric substance, thereby improving noise reduction. The method employs an electric field chamber, preferably a hollow conductive tube, to distribute the radiated electric field over a larger effective area without affecting the inductance or transmission qualities of the AC power conductor.
Type: Application
Filed: January 6, 2012
Publication date: July 12, 2012
Inventor: Caelin Gabriel

METHOD TO REDUCE SIGNAL DISTORTION CAUSED BY DIELECTRIC MATERIALS IN TRANSMISSION WIRES AND CABLES
Publication number: 20120080212
Abstract: A method and apparatus for reducing dielectric polarization and dielectric relaxation within a signal wire by partially neutralizing the electric charge differential within the dielectric material between the signal conductor and the surrounding insulating dielectric material.
Type: Application
Filed: September 30, 2011
Publication date: April 5, 2012
Inventor: Caelin Gabriel

Cable elevator
Patent number: 7694917
Abstract: A cable support apparatus for suspending audio and/or video system cables above the floor. The device is configured as a sandwich of at least three layers of electrically conductive foam, including first and second outer layers fabricated from a low density electrically conductive foam, and an inner layer disposed between said first and second outer layers and fabricated from a foam having a higher density and greater rigidity than the foam of said first and second layers. The inner layer includes a V-shaped crotch for supporting a cable with minimal surface contact. The cable support minimizes floor vibrations transmitted to the cable, breaks up resonant vibration modes within the cable support itself, and neutralizes static-electrical charge differentials between the cable and the floor.
Type: Grant
Filed: August 22, 2008
Date of Patent: April 13, 2010
Inventor: Caelin Gabriel

CABLE ELEVATOR
Publication number: 20090050753
Abstract: A cable support apparatus for suspending audio and/or video system cables above the floor. The device is configured as a sandwich of at least three layers of electrically conductive foam, including first and second outer layers fabricated from a low density electrically conductive foam, and an inner layer disposed between said first and second outer layers and fabricated from a foam having a higher density and greater rigidity than the foam of said first and second layers. The inner layer includes a V-shaped crotch for supporting a cable with minimal surface contact. The cable support minimizes floor vibrations transmitted to the cable, breaks up resonant vibration modes within the cable support itself, and neutralizes static-electrical charge differentials between the cable and the floor.
Type: Application
Filed: August 22, 2008
Publication date: February 26, 2009
Inventor: Caelin GABRIEL

Method and apparatus for isolating RFI, EMI, and noise transients in power supply circuits
Patent number: 7196892
Abstract: A method and apparatus for isolating and/or eliminating RFI, EMI, and noise transients in power supply circuits. The circuit isolates DC to DC and AC to DC power coupling by use of dual, parallel current paths that are alternately gated. The gating of the switches is controlled by a control module, which ensures that the input and output of the circuit is electromagnetically blocked during any instant in time, while simultaneously ensuring proper and continuous delivery of current to the circuit output load.
Type: Grant
Filed: April 10, 2003
Date of Patent: March 27, 2007
Inventor: Caelin Gabriel

Method and apparatus for isolating RFI, EMI, and noise transients in power supply circuits
Publication number: 20030234581
Abstract: A method and apparatus for isolating and/or eliminating RFI, EMI, and noise transients in power supply circuits. The circuit isolates DC to DC and AC to DC power coupling by use of dual, parallel current paths that are alternately gated. The gating of the switches is controlled by a control module, which ensures that the input and output of the circuit is electromagnetically blocked during any instant in time, while simultaneously ensuring proper and continuous delivery of current to the circuit output load.
Type: Application
Filed: April 10, 2003
Publication date: December 25, 2003
Inventor: Caelin Gabriel

Method and product for reducing distortion in an audio or home theater cable
Patent number: 6545213
Abstract: A method and product for reducing distortion in an audio cable includes a flexible outer conduit and at least one electrical conductor (i.e. wire) disposed in the conduit along its longitudinal length. A granular or beaded ferro-electric substance is disposed in the conduit along its longitudinal length. The electrical conductor is surrounded by (i.e., immersed in) the ferro-electric substance along its length and extends from each end of the cable and may include whatever termination is desired to connect the electrical conductor to a component part of an audio or home theater system. A seal is provided at each end of the audio cable to retain the ferro-electric substance. Preferred ferro-electric substances include generally spherically shaped beads of silica gel or rochelle salts of combinations thereof.
Type: Grant
Filed: December 2, 1999
Date of Patent: April 8, 2003
Inventor: Caelin Gabriel

masterworks

suisheng 发表于 2020-8-1 17:09
发烧友和非发烧友的耳朵在生理层面并没有多大差异。人的耳朵可以听到的声音信息非常之多，多到远远超出听觉 ...

说得很对！！
我总结一下就是：意愿先于能力。你想听到，用心听，才可能听到。

BOM标志

子弹兄对电方面了解，这用电可以啊，离变压器不到100米，街线是150MM#的，申请了380V电表，16MM#下线，再专线到音响房，其他家用电用另外两线，互不干扰

青岛子弹

BOM标志 发表于 2020-8-11 14:34
子弹兄对电方面了解，这用电可以啊，离变压器不到150米，

因为我不了解，所以才要多学习，多辩证。

BOM标志

家用电16MM#完全可以了，用到25MM#的家庭用电也不多的

青岛子弹

tiesanjiao

线材这事真的是费劲，我倒是觉得大家都不讨论了更好
盲听万岁！！！盲听无敌！！！

青岛子弹

tiesanjiao 发表于 2020-8-12 17:54
线材这事真的是费劲，我倒是觉得大家都不讨论了更好
盲听万岁！！！盲听无敌！！！ ...

青岛子弹

军事科学家用手持式电力测试仪，演示机线和发烧电源线的差异。





https://www.bilibili.com/video/BV12A411J7ju/