Expressions of interest for buying transformers for diy amp ref Linuxguru's thread

Audiolab 9000N
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

captrajesh said:
OK guys, I'm back in Chennai. Whosoever wants to source the trafo from SV Tronicks can PM me. Alternatively, you can call the vendor and talk to him directly. His mob No. is +91-93810 24803.
Click to expand...

I ordered a 300VA R-Core from HYD Little above 2.5k. It will come next week.

cheers
 
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

Who is your supplier in Hyderabad? What is his lead time? Does he have C/E or U/L certification?
 
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

Hi GeorgeO,

It seems that you are very familiar with all Chennai stuff.

N.Murali
 
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

GeorgeO said:
Who is your supplier in Hyderabad? What is his lead time? Does he have C/E or U/L certification?
Click to expand...

Designers & Manufacturers Of:LF & HF Power magnetics,Transformers,Inductors,Coils for Industrial,Power & Medical Applications

This vendor was presented by Quad in another post I think.

lead time is 7 to 8 days. Beginning of this week, I just woke up to the fact that buying a trafo is overdue by a month now so made a few frantic calls and settle it within a few hours on Monday. My lack of trust in Miracle was I feel justified, after I asked about quality of iron in the core. Until then Miracle was responding within 15 to 30 mins via email, then suddenly .... pin-drop silence!! No reply to multiple emails. Going by this behavior - the EMAG core is bound to be of better quality than Miracles - the original poster who spoke bad about Miracle cores could be right (diyaudio was it?).

EMAG uses M4 grade This post explains a bit Physics Forums - View Single Post - Questions about transformer

Besides they supply BEL BHEL (who make some of the worlds most advanced radars) and I think their QC is going to be stringent, therefore the general standards of EMAG. So I dropped the CE/UL requirement. :) Also there is 18 months warranty.

I also asked him to put electrostatic shield between primary and 2ndary which he obliged. an R-Core is almost as good as an isolation transformer without its supposed drawbacks - killing the dynamics in music.

300VA Trafo is 3.8 kgs 200VA is 3.1kgs. I went for 0-25, 0-25 5A secondaries to account for voltage sag under peak load. But this was a novice making a decision, I hope it is justified logically.

HTH
 
Last edited:
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

GeorgeO said:
Ahh, back to the land of Saravana Bhavan and Ponnuchamy( er, sorry Ponnuswamy!)
Click to expand...

Hehehe GeorgeO, there are a quite a few more now. Both the above hotels are not patronised by swish and well heeled any more.
 
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

Gobble:

Did you get your tranny from the Hyderabad vendor yet? How does it look?
 
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

GeorgeO said:
Gobble:

Did you get your tranny from the Hyderabad vendor yet? How does it look?
Click to expand...

No word form the supplier. I will mail him today and check. I guess the dusshera holiday means his workers are on leave.

Cheers
 
Re: Expressions of interest for buying transformers for diy amp ref Linuxguru's threa

Folks who got their toroidals,
How are the secondaries wired ? Are there 2 sets of 24-0-24
or are there 2 sets of 24-0 ?
 
Wharfedale Linton Heritage Speakers (Walnut Finish) at a Special Offer Price
Wharfedale Linton Heritage Speakers in Walnut finish at a Special Offer Price. BUY now before the price increase.
Back
Top