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Old 12th October 2003, 04:02 AM   #1
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Question Good price on a Toroidal?

Hi,

I asked a bloke for aa quote on a custom transformer job with the stats as follows:

400VA
Dual 22v secondaries
lowest noise possible

And he quote me AUS$320

What are your views on this price? too steep or good deal?

Thanks for your time
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Old 12th October 2003, 04:21 AM   #2
DSummer is offline DSummer  United States
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Default Re: Good price on a Toroidal?

Quote:
Originally posted by Scribble
Hi,

I asked a bloke for aa quote on a custom transformer job with the stats as follows:

400VA
Dual 22v secondaries
lowest noise possible

And he quote me AUS$320

What are your views on this price? too steep or good deal?

Thanks for your time

Hehe... no comment, but I won't place the order........
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Old 12th October 2003, 04:58 AM   #3
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STEEP!

I'd make sure you get one with:

* Oversized Core
* Electrostatic Shield
* Bifilar or Quadfilar Windings

But you should be able to get away for under $250

Try www.tortech.com.au and http://www.users.bigpond.com/harbuch...ch/default.htm
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Old 12th October 2003, 09:18 AM   #4
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You can get an Avel Lindberg 500va 25v+25v on Partsexpress from the US for (USD60 = AUD87) + (USD67 = AUD97) S/H = (USD 127 = AUD184) total. You should be able to get a cheap one there, for around half that price. Dual primaries, so they will work off 220-240v in addition to our 120v.

Alternately, Jaycar in australia has 12-0-12(24VCT I believe) toroids in both 160va and 300va. Buy two, ignore the centertap, hook them onto one PS, and you're good to go, for approximately the same amount of money for two 300va's as you would get the avel for one 500va.
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Old 12th October 2003, 10:32 AM   #5
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Quote:
Originally posted by Squalish
You can get an Avel Lindberg 500va 25v+25v on Partsexpress from the US for (USD60 = AUD87) + (USD67 = AUD97) S/H = (USD 127 = AUD184) total. You should be able to get a cheap one there, for around half that price. Dual primaries, so they will work off 220-240v in addition to our 120v.

Alternately, Jaycar in australia has 12-0-12(24VCT I believe) toroids in both 160va and 300va. Buy two, ignore the centertap, hook them onto one PS, and you're good to go, for approximately the same amount of money for two 300va's as you would get the avel for one 500va.

So by that you mean ignore the 0 (centertap?) and treat the
4 12's from the 2 transformers as dual secondries?

so would the secondaries on the transformer be 24v or 12v?

Also how could i use a center tapped transformer in conjunction with peter daniels gainclone schematic? the one with the dual secondaries and 2 bridges?


Sorry for all the questions but im kinda new to this type of power distribution, always used batteries in past projects =/
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Old 12th October 2003, 10:52 AM   #6
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Yes, I was suggesting a two-secondary/two bridge design and treating each toroid as a single secondary, but on reflection, that may not work.
Meh.
Get a 500va 25v+25v unit from Alltronics for AUD120, or go with a 300va 25+25 for AUD76.
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Old 12th October 2003, 11:04 AM   #7
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Thanks for all the help!

One last question, can someone with a bit of time on their hands help me out with a few fields in the http://www.tortech.com.au/ custome enquiry form? i know its a big ask but im not sure on a few of the fields

Thanks if anyone can
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Old 8th November 2003, 05:14 AM   #8
shyfx is offline shyfx  Australia
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http://www1.jaycar.com.au/productVie...Max=&SUBCATID=

http://www1.jaycar.com.au/productVie...Max=&SUBCATID=

two of either one of these should be fine shouldn't they?

Stock codes are MT2113 and MT2114 if the links don't work. Visit http://www.jaycar.com.au
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