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Old 28th May 2007, 09:05 AM   #1
Pocoyo is offline Pocoyo  Indonesia
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Lightbulb Encapsulated Torodial for solid state

I want to use encapsulated torodial for my amp
but if i order from the manufacture the answer is

Minimum quantity order is 100 pcs

And for the best industries, the price is 4 X the original price


Let we look from Jacco Vermullen Posting
Availability Of Toroid Xformer Cans??/

Why not fold a metal plate and cover the toroid with it ?

Saves looking for expensive pans, easy to fasten to the chassis, and you could have them done in SS.

My guess would be that you experience hum despite the same layout because the orientation of toroid magnetic fields is not constant.
The wiring around the core may not be exactly the same, the tension of the cable wire may differ, or the core differentiates.

I suppose the hum is not caused by toroid vibration ?
The look of resin molded toroids i like a lot, epoxy resin has excellent qualities for toroid molding ;
no mechanical vibration and vibration induced hum, better heat transfer from the transformer than through air, and a steady groundplate for fixing the toroid to the amplifier chassis.
I have used alloy outdoor cooking pots to mold toroids in.

A shame that MU metal has become so filthy expensive, i still have a bunch of cinch plugs with MU metal outer tubing.
As far as i have gathered MU metal is the only material able to shield magnetic fields highly effectively, MU metal foil worked wonders on the moving coil phono stages i built.




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Old 28th May 2007, 09:10 AM   #2
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Default The encapsulated picture

This is encapsulated picture

is this encapsulated work better comparising with
the original ? Im sure it must be better

sorry dont have photoshop to camuflase
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Old 28th May 2007, 09:15 AM   #3
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Maybe you can look what is different
between the original

http://www.plitron.com/ssa.asp

What is happen if we use "the best" in our amp
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Old 28th May 2007, 09:23 AM   #4
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Why we just use the standar only ?

- Were we always look for the cheaper

or

- when we want to buy it the answer always
sorry, we can make it if you order for 100 pcs

were we thingking about this before


This is the picture of standar torodial picture
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Old 28th May 2007, 09:25 AM   #5
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Default maybe this too

the other torodial from different manufacture
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Old 28th May 2007, 09:31 AM   #6
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Default Is ready if you build tube amplifier

It is different faith if you build solid state amplifier
they make it for the tube

http://www.plitron.com/audio.asp
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Old 28th May 2007, 09:42 AM   #7
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Default Simple encapsulated

For this encapsulated we must order 100 pcs

This is letter reply from one torodial manufacture

--------------

Dear Jeffry,

unfortunately we cannot supply this transformer:

We cannot meet your size constraints: an un-encapsulated 625VA transformer will have a finished diameter of around 140mm & an 800VA transformer will have a finished diameter around 160mm
We only encapsulate up to 625VA (encapsulated size 147 x 90mm) & the minimum order quantity is 100 pieces
We do not supply with plugs
The addition of a screen & low noise will mean an increase in dimensions
We are not interested in supplying with blue cable

Please try Plitron in Canada

-------------

so what for they give this
http://www.antrimtransformers.com/req_quote.php
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Old 28th May 2007, 09:50 AM   #8
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Default My Reply

Why they not stock and sell to us ?

----------

Hi ... ( Edit )

I have space in my amplifier, when i look your choice in diameter so i think
why i dont order with smaller diameter. For blue cable and plugs because i
look that so cool in your website. This is just fashion, no need so urgent

I need 2pcs X 625va with Primary Voltage 230 VAC and output 45V secondary
winding, and its ok with encapsulated size 147 mm x 90 mm.

Terry i have a few question
- If i buy torodial from you, do you sell this encapsulated casing for me ?
- What is type of encapsulated alumunium or plastic ?
- If somebody make encapsulated casing, can you make encapsulated
process join with my torodial and casing ? Im in no hurry, i can wait
I will pay you first and wait untill all process finish

For the payment are you receive paypal, credit card or just transfer ?

Thank you for your response ( Edit )

Best regards
Jeffry Widjaja

----------

Until this day they not reply this letter
ahhh ... you just buy 2 pcs is very meaningless
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Old 28th May 2007, 09:59 AM   #9
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Default Simple question to all my friend

So i have a little question to all member of diy audio

1. Is this encapsulated better or all the same quality with
the standart torodial transformer

2. Are you satisfied with your standart transformer
wont you change it if you have more money tommorrow

3. Are we faith just to use standar torodial forever ?

4. Can someone help me, i just want to buy like
this picture below but only 2 pcs, wheres i can find it
my torodial 625va, 230vac primary, 2 X 45 secondary

i really dont have better idea right now
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Old 28th May 2007, 10:06 AM   #10
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Jeffry,

on request, a couple of the toroid manufacturers will sell you a steel toroid transformer pan.
Plitron in Canada does, Amplimo overhere does, the cost is moderate.
The epoxy resin market has matured, there are plenty of manufacturers and suppliers.
It's easy to obtain a thermal resin from a specialised epoxy resin supplier and pot the toroids yourself.
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