Directionality Explained


I have read it argued against by those who think they know
Here is proof
Paul Speltz Founder of ANTICABLES shares his thoughts about wire directionality. Dear Fellow Audiophiles, As an electronic engineer, I struggled years ago with the idea of wire being directional because it did not fit into any of the electrical models I had learned. It simply did not make sense to me that an alternating music signal should favor a direction in a conductor. One of the great things about our audio hobby is that we are able to hear things well before we can explain them; and just because we can’t explain something, doesn't mean that it is not real. 

https://www.monoandstereo.com/2020/05/wire-directionality.html#more
tweak1
I have forgotten the details of what I learned, but not that the knowledge exists, and where/how it is used, and many of the other things I learned and forgot the details on provided the framework for understanding other pieces of knowledge. When presented with a problem, I can draw on the tools I know exist, and brush up on fundamentals as needed.


It all comes down to the nature of you job, and people please don't take offence. In many trades, and many "professional" jobs, a large portion of the knowledge set is expected to be readily available, whether it is the mechanic at the dealership, your electrician, construction carpenter, your accountant, your dentist, your GP, a lot of civil engineering, they are almost always working from knowledge readily at hand. Contrast that to R&D engineers, medical researchers, many software developers, custom carpentry, etc.   In one instance we expect an instant result. I bring my car in, you change the brakes. My tooth aches, you stop it. Do my taxes. Contrast that to where the outcome is less defined, and the path to get there is also less defined, not to mention the deliverable is not immediate.
geoffkait21,956 posts05-21-2020 8:43amMost people forget rather quickly whatever they were taught in school, just my observation. l mean, come on, most people don’t even use what they learned after they get out.

@elliottbnewcombjr, what can I tell you? I get around. Stereophile forum RIP. 🙏

Round round get around, I get around, yeah
(Get around round round I get around, ooh-ooh) I get around
From town to town (get around round round I get around)
I’m a real cool head (get around round round I get around)
I’m makin’ real good bread (get around round round I get around)
heaudio123,

I am intending to use about 33,000uF and up, depending on price and low frequency ripple current.  Among the 105 degree caps, there are quite a few choices.  What brand is usually the best ?  Nichicon had a great reputation, is it still the same ?

Thanks

I assume at 50-63V. You won't get 105C/10K hours in those values unless you build it from a bunch of smaller ones. You may find one, but very expensive. There are 8,000 hours at 105C and that is likely close enough.  Nichicon, UCC (United Chemicon), Kemet, TDK, Cornell all have stuff up in that size area and all reputable.  The high temp, long life are typically high ripple/low ESR as well. Most caps in audio I have found are 85C/2000 hours.  Keep in mind even though they are 105C/10K hours, pretty much all bets are off once you get to about 15-20 years.

I would even trust many of the Asian brands if I knew I was getting the real thing, but unless you are buying from an authorized distributor (Arrow, Mouser, Digikey, Future, Avnet, Mouser ... etc.) you are taking your chances.
Grades are based on how well the student memorizes whatever is in the book, right, or wrong

what ????
I guess maybe only when you are studying some brain washing courses  filled with leftist dogmas and worn out slogans that you have to memorize in order to become some kind of commisar or a SJW blogger or some other non contributing to society moron...
Not in engineering...that is why you don't see many engineers in politics...they can think and solve problems...