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Old 1st June 2005, 07:03 AM   #1
thanx is offline thanx  Norway
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Question What can be created of this?

I would like to utilise some transformers I have lying around at home.. But as my electronics skills are unfortunately not close to my language skills, I am asking for advice, circuit description and suggestions..

I have 8 ring type transformers (brand new) with the following details printed on them:

5,5 A, 60 Volt (measured as well)

What I would like is some decent class A stuff,
but I am not sure what I can anticipate from the HW I've got.

I appreciate all "contributions"..

Thanks a lot..
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Old 1st June 2005, 07:12 AM   #2
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There is no DECENT Class A (power amp) 'stuff' - Class A is an indecent escape from good design. The simple and easy mistress at the back door that does no-one any good. The environment-our environment, is poorly served by Class A.

Besides it's summer in Norway, so any justification is gone.
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Old 1st June 2005, 07:25 AM   #3
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Quote:
Originally posted by amplifierguru
The environment-our environment, is poorly served by Class A.
That's ridiculous. All the Class A audio amps in the world don't amount to diddly squat when it come to squandering power.
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Old 1st June 2005, 07:30 AM   #4
Ipanema is offline Ipanema  Malaysia
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Class A is the price to pay to achieve Nirvana..........some guru said..........
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Old 1st June 2005, 07:43 AM   #5
Edgar is offline Edgar  Norway
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"That's ridiculous. All the Class A audio amps in the world don't amount to diddly squat when it come to squandering power."

- Yes, we should all think like that!

Thanx, is there any center taps on your transformers?
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Old 1st June 2005, 07:47 AM   #6
AuroraB is offline AuroraB  Norway
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Location: Norway, -north of the moral circle..
60 V is somewhat on the high side for a reasonable class A, unless your trafo's are center tapped......is there only one single secondary of 60V?? A center-tapped 60V , or 2x30V, is just about right for this one.....
Krell KSA 50 pcb
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Old 1st June 2005, 09:11 AM   #7
thanx is offline thanx  Norway
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Quote:
Originally posted by amplifierguru
Besides it's summer in Norway, so any justification is gone. [/B]
Well, it is summer season, but that does not always mean warm weather and sunny days.. It is rather cold and windy, and the real summer does not normally kick in before late july or early august..

But my eagerness is not season based..


Besides, I am happy with any sollution, as long as I can utilise the transformators.. I have a easy and by Norwegian standard, very cheap, access to equipment and parts if needed..
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Old 1st June 2005, 09:35 AM   #8
AuroraB is offline AuroraB  Norway
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well--- 60V and times 2 is rather on the high side for Class-A....more suitable for a good B amp... but you would have to use two trafo's pr channel.....
Maybe this one...
Leach Super Amp Pcb Re-Design (LSAPRD)
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Old 2nd June 2005, 01:12 AM   #9
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Hi guys.

Thanx,

You could make some really powerful ClassAB amps with 85-90V rails from a pair. On full range music they will likely use only 50W if that. Then, if your friends like them you can make three more for them. Your power bill and the environment and future generations will thank you.

Bill Fitzpatrick,

2650W of supply IS wasting power and, if we all adopted your mindset, nothing would ever be conserved. Funny weather we've been having?
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Old 2nd June 2005, 02:13 AM   #10
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Quote:
Originally posted by amplifierguru

Bill Fitzpatrick,

2650W of supply IS wasting power and, if we all adopted your mindset, nothing would ever be conserved. Funny weather we've been having?
You're just a conservation radical without much perspective. Class A amps don't amount to squat; they're a grain of sand, a fleabite, a single pimple on humankinds collective butt. Come back and talk to me of conservation when you start taking cold showers.
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