Fuses fuses fuses


Ok, this is about fuses

1- a standard Bussman fuse is UL approved. Are any "high end" fuses UL approved?

2- do any component manufacturers supply their gear with any of the usual suspects of high end fuses as opposed to a standard Bussman?

3- let's say fuses do make a difference. Given incoming power is AC, why could fuses be directional? 

Not meaning to light any fires here- 

thanks in advance 
128x128zavato
Well said, nonoise.
BTW-How do you get those hammers and other icons to show? I don't have any when I post.
Bob
gdnrbob,
I discovered that by going to "edit" on my iMac, the menu pull down has emojis and other symbols at the bottom. Clicking on that brings up the emojis available and all you have to do is scroll down the one you like and click on it and it should appear right next to your text.

All the best,
Nonoise

It is a fact that jumping out of an airplane at 10,000 feet without a parachute is unlikely to have a happy ending, at least assuming that a very large net is not set up on the ground. To most of those having an extensive background in electronic design the idea that a fuse would be inherently directional seems about as probable as the likelihood of such a jumper being in condition to celebrate with a beer following the experience. Especially when a person having extensive background in electronic design (Ralph) has in this and other threads provided specific experimental evidence supporting an alternative explanation. And especially when another such person (me) has pointed out that a half dozen or so variables that are unrelated to the internal characteristics of a fuse are also being changed when its direction is reversed. And especially when the phenomenon is alleged to consistently occur regardless of the design and the function of the component that is involved, and regardless of whether the component has well regulated internal DC voltages or internal voltages that are completely unregulated.

The point to citing these things is not to deny anyone any pleasure. It is to dispel the promulgation of what appear to many of us to be myths and misconceptions, and to foster what appears to many of us, rightly or wrongly, to be a better understanding of the reported phenomena.

Regards,
-- Al

Geez, AL, you still trying to snow us with that, "we’re electronics and digital designers so we must be right" argument? You guys are too much. That’s the most obvious illogical argument there is - ye olde Appeal to Authority. Besides, if anyone has the credentials to win such an appeal to authority for fuse directionality it’s me! I have a lot more engineering science under my belt than you two guys put together. It’s not really an electronics or digital design issue. It's a metal crystal me physical science issue. What did I take?  Thermodynamics, statistical thermodynamics, strength of materials, nuclear physics, indeterminate structures. You know, things of that nature. So please don’t try to snow us with your credentials. In fact, my undergraduate thesis involved the atomic physics of highly magnetized metal crystal. OK, you can guys can retire to your Barco Loungers. 

I have a lot more engineering science under my belt than you two guys put together.

You directed this statement at Almarg and Ralph!!!!! you really are certifiable.
You've also been laughed off many other technical forums by even higher technical authorities than them, for your unexplained findings, you really do think you are the new "Audio Messiah"?? We can only live in hope the same happens here. 

Cheers George