|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
24.126.111.247
In Reply to: RE: Electronic Transformer heating for the gm70 test posted by used-hifi on January 28, 2017 at 17:50:25
I suppose that is why we use this acronym a lot in our hobby.
Clearly your hearing abilities are different from mine. I just checked and at age 69 I can hear up to 13 khz and that is it. Back when I was aged 35 I could hear 20 khz. Your hearing is well beyond what most people hear, so obviously AC heating at 37 khz is not a solution for you.
However, it may still be a solution for others with less phenomenal hearing. My original reason for trying the method was reduced weight. For others, reduced size. For some, reduced cost. Some may prefer AC to DC. If those factors are not important to you then the RC regulators are a highly regarded safe option.
That is the beauty of our hobby. We can make decisions that suit our own particular needs, restrictions, experiences and biases.
ray
Follow Ups:
Sorry Ray there is no way this should be acceptable, you cannot rational away the simple "FACT" that there is crap load of 37kc hum on the output, if you really think this is acceptable I feel for ya.... that is I feel sorry for you.
if your hearing is so low in quality why bother with this at all? might as well just get a nice clean small digital amplifier and be done with it? these have all kinds of stuff on the output that you cannot hear anyways right?
I also feel like i just flushed 20 dollars down the toilet that i will never get back, no biggie just money :)
Lawrence
love trumps hate love trumps hate love trumps hate
you sound like a product of the american university system lol
If I ever bought a SE opt I would be even more certain that you that I have flushed some large amount of money.
My PP DH stuff is all 60 cps AC, and it is quite quiet, thanks to a hum pot and filament winding for each tube.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
"if your hearing is so low in quality why bother with this at all? "
I think it's pretty clear you don't know how to use this technique. People might be more willing to guide you through it if you didn't find it necessary to insult everyone who responds. And on this subject of hearing 37kHz ripple - I didn't find anyone with that capability in the Guinness book. Maybe you should apply.
--------------------------
Buy Chinese. Bury freedom.
It took me to post some neg thoughts about you guys idea to finally get someone to post, you all must love dramma
I feel insulted by this really great idea that you guys posted but neglected to leave out that you will have half a watt of hi freq on its output!!! even if i null out the fundamental there will still be harmonics and all the the nice harmonics on the line itself.
its somewhat my fault as I just took it as THIS IS THE WAY TO DO IT and not think for myself, never again!
you guys here are not up to speed, I think DIYaudio forum will suit me much better, as these guys HAVE A CLUE
no need to rant anymore good luck with all your HI freq heating LOL
I will stick to THE CORRECT WAY to heat hi mu tube
Lawrence
Good luck to you Lawrence. Don't forget to tell the little Stalins running that forum how awful we are.
--------------------------
Buy Chinese. Bury freedom.
Another know-it-all who after 5posts reveals they don't understand some of the fundamentals....:*). JH
An electronic scale. Likely generates significant audible amounts of 37 kHz...
It is a well accepted, scientifically proven fact that the range of hearing for humans is limited to 20 Hz to 20kHz. I just turned 60 and consider myself fortunate that I can hear out to 12kHz. I will not take your advice and listen to a small digital amp since I get a lot of pleasure from building my own non-digital tube amps. Assuming you are fortunate enough to live into old age you too will suffer impairment to your hearing that will make this ridiculous discussion of being able to hear 37 kHz signals rather pointless.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: