If I disconnect the transformer from everything (it stays just by itself, no load) and turn the mains on it buzzes. I am positive that it is the transformer. I have an EI 300VA but I have not tested it yet.
That was not so good 🙁
I would replace it strait away, I ones had a transformer that gave up!( It was very old) that ended in small fire in my room!!
Luckily nothing was harmed, except my pride!!
I would replace it strait away, I ones had a transformer that gave up!( It was very old) that ended in small fire in my room!!
Luckily nothing was harmed, except my pride!!
Wow, I hope this one does not self destruct into a bunch of flames 
. Maybe I bake it under vacuum before I throw it away. Afterall it gave me some trouble adjusting the secondary voltages from it - I had to unwind a couple of turns from the secondary and then put all that plastic tape back in a nice manner.
. Maybe I bake it under vacuum before I throw it away. Afterall it gave me some trouble adjusting the secondary voltages from it - I had to unwind a couple of turns from the secondary and then put all that plastic tape back in a nice manner.
Hi!
Me again - now I'm fresh-minded ...
Hmm - about those capacitors on AC side - I guess they are polarized ones - so - how to use them - a have in mind that when 2 polarized are connected witj same polarity - than they represent non-polarized one ... Am I right or wrong??
Me again - now I'm fresh-minded ...
Hmm - about those capacitors on AC side - I guess they are polarized ones - so - how to use them - a have in mind that when 2 polarized are connected witj same polarity - than they represent non-polarized one ... Am I right or wrong??
Well - I assumed that "back to back" means something - but I disn't know the meaning ...
So - "back to back" - that means (+) to (+) or (-) to (-) - both ways we get non-polarised one ... Right?
Thanks again!
So - "back to back" - that means (+) to (+) or (-) to (-) - both ways we get non-polarised one ... Right?
Thanks again!
I used a regular polarized electrolyitc, like it is said in another thread about DC traps. I have to say that I covered the whole thing but there was no (big-) bang at all and everything is fine thank you.
The cap did not warmed up even.
The cap did not warmed up even.
Sometimes the DC is great enough to get past 2
diodes
Try it without diodes.
Just as likely you have a noisy transformer: it does happen.
diodes
Try it without diodes.
Just as likely you have a noisy transformer: it does happen.
I have a question, that has absolutely nothing to do with this thread!!(sorry)
Here it comes, why does Nelson Pass offer his projekts to us Diy's?? As fare as I can see he would sell more of his own produkts by not doing it!!
But I am very glad that he is doing it!! Thanks Nelson Pass!!
Here it comes, why does Nelson Pass offer his projekts to us Diy's?? As fare as I can see he would sell more of his own produkts by not doing it!!
But I am very glad that he is doing it!! Thanks Nelson Pass!!
I think it's the following:
1) N.P. loves amplifier design, and finds it very rewarding to see others get involved in something he takes such pleasure from.
2) He's a hell of a nice guy.
3) Some day many of us may decide that it's better not to spend hundreds of dollars to save hundreds of dollars (or we simply decide to pursue other interests with our time). Instead we may be making hundreds of dollars per hour and be happy to spend thousands of earned dollars buying from a manufacturer. Who's equipment will we favor?
4) We may be quite willing to recommend products of Pass Labs to our acquaintences who seek our advice about audio equipment.
and, 5) He's a hell of a nice guy!
I don't mean to speak for him, but this is what I've taken from several discussions here together with a short meeting with him in person.
1) N.P. loves amplifier design, and finds it very rewarding to see others get involved in something he takes such pleasure from.
2) He's a hell of a nice guy.
3) Some day many of us may decide that it's better not to spend hundreds of dollars to save hundreds of dollars (or we simply decide to pursue other interests with our time). Instead we may be making hundreds of dollars per hour and be happy to spend thousands of earned dollars buying from a manufacturer. Who's equipment will we favor?
4) We may be quite willing to recommend products of Pass Labs to our acquaintences who seek our advice about audio equipment.
and, 5) He's a hell of a nice guy!
I don't mean to speak for him, but this is what I've taken from several discussions here together with a short meeting with him in person.
This is one of those nice junctures where there is a lot of win/win. In no particular order:
1) I get to pay forward for the help others have given me.
2) It adds credibility to my commercial efforts.
3) It stimulates interest in high end audio which eventually stimulates the market for my products.
4) I'm an artist. I want my work to be appreciated.
5) I get to gauge response to ideas, giving me a better picture of what will be successful in the marketplace
6) I get to correspond with and be stimulated by people with the same interests, many of whom help me one way or another.
7) Like you said, I'm a hell of a nice guy.
1) I get to pay forward for the help others have given me.
2) It adds credibility to my commercial efforts.
3) It stimulates interest in high end audio which eventually stimulates the market for my products.
4) I'm an artist. I want my work to be appreciated.
5) I get to gauge response to ideas, giving me a better picture of what will be successful in the marketplace
6) I get to correspond with and be stimulated by people with the same interests, many of whom help me one way or another.
7) Like you said, I'm a hell of a nice guy.
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