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Highest amplifier supply rails?
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infamousj View Drop Down
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Points: 82 		Post Options Post Options   Thanks (0) Thanks(0)   Quote infamousj Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2012 at 2:01am
The biggest rails in an amp that I have my hands on is a whole +/- 80vdc. It's a mid 80s Traynor beta800 I'm fixing for a friend, claims 400w per channel at full tilt. After that I'm going to attempt to build my own 100w per channel before moving into big boy power levels, lol.

Have come across Some of Leco's posts Over on diyaudio and his stuff seems to be some very nice designs, keep up the good work... You helpto inspire people like me :)
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Points: 817 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DjLeco Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2012 at 11:37pm
Originally posted by GAZ. GAZ. wrote:

DJ Leco's amps certainly seem robust! flat out into 2 ohm, and shorting it out at full power and it doesn't go bang!
A lot of amps out there would not take that sort of abuse and still work afterwards.
 
Watch here:
 
 
 
I'm A Stupid SMART Romanian...
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Walkalone View Drop Down
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Originally posted by M4trix M4trix wrote:

Originally posted by teslaman teslaman wrote:

If you mean class-AB with no rail switching (i.e. not class G/H) then i've seen up to +/- 90/100V split rails but there are probably more extreme examples out there (Maplin 1kW amp kit or OMP 1kW MOSFET amp perhaps?). Above these rail voltages it's harder to find decent transistors and more effeciency from class-G/H helps keep dissipation down anyway whilst lowering the maximum voltage the devices see.
Class-D is a different matter of course...


Ecler's PAM 6100 is a class AB amplifier with two 3,6kVA toroidal transformers, cca. 150V DC per rail and delivers 1750W per channel on 4 ohms load. That's the highest power supply voltage I've seen in a AB class design. It has 24 switching fets in the output, IRFP360.

 150VDC rail for class AB??? OMG!!!Shocked
Do you have Ecler PAM6100 schematic? I want to see it!


Edited by Walkalone - 12 March 2012 at 4:52pm
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M4trix View Drop Down
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Points: 445 		Post Options Post Options   Thanks (0) Thanks(0)   Quote M4trix Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2012 at 10:59pm
Here you go. Actually there is no info about the power supply voltage in the service manual but fortunately I had an opportunity and opened one amplifier on my desk. Wink

His majesty.... the PAM 6100! ---> http://www.2shared.com/document/zdWGt0Ue/ECLER_PAM_4100-6100.html Big smile
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Walkalone View Drop Down
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Walkalone Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2012 at 11:18am
Originally posted by M4trix M4trix wrote:

Here you go. Actually there is no info about the power supply voltage in the service manual but fortunately I had an opportunity and opened one amplifier on my desk. Wink

His majesty.... the PAM 6100! --->  http://www.2shared.com//zdWGt0Ue/ECLER_PAM_4100-6100. - http://www.2shared.com/document/zdWGt0Ue/ECLER_PAM_4100-6100.html Big smile

Sorry, i can't download from your link. It's say '' The file link that you requested is not valid. Please contact link pulisher or try to make a search''.
Please upload to other host, i.e mediafire or 4shared... Thanks!!!Smile
I have a DIY amp, 95VDC per rail. Bridge topo, used 16 pairs per channel and 2KVA IE transformer per channel. Fully complementary input, based from Crest Audio CA 12. I'm used it on my DIY 15' subwoofer.
 
 
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M4trix View Drop Down
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Points: 445 		Post Options Post Options   Thanks (0) Thanks(0)   Quote M4trix Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2012 at 3:19pm
Strange, 2shared always worked. Try this link. http://www.mediafire.com/?xqcx770jv7yr4jm

Originally posted by Walkalone Walkalone wrote:

I have a DIY amp, 95VDC per rail. Bridge topo, used 16 pairs per channel and 2KVA IE transformer per channel. Fully complementary input, based from Crest Audio CA 12. I'm used it on my DIY 15' subwoofer.


You made it by yourself? Some pics would be nice. Smile
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Walkalone View Drop Down
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Walkalone Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2012 at 1:43am
Thanks M4trix!!!
Yep! I build it by myself. Sorry, i sold it last week for a friend.
I'm building another one, similar. 100VDC for each rail, used 16 pairs per channel, bridge topo with 2500 ~ 3000VA toroidal transformer. 2000W/8ohms, 0.1%THD@ full power is my destination, he he.
Now, the PCB design is nearly complete.
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nev23 View Drop Down
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Points: 99 		Post Options Post Options   Thanks (0) Thanks(0)   Quote nev23 Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2012 at 10:33pm
I saw a 5kW amp that had just 2 output valves. Don't know what they were (sorry) but they were anode modulating a 10kW short wave transmitter. The modulation transformer was quite large...

But then the BBC radio 4 long wave transmitter uses a single output valve to deliver 400kW. And It's class B, because it has to be linear for amplitude modulation.
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Walkalone View Drop Down
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Walkalone Quote  Post ReplyReply Direct Link To This Post Posted: 26 March 2012 at 6:00am
RAM Audio MB1900. Class AB amp with 5 pairs MJL21193/21194 per channel.
2.2KVA EI transformer, 108VDC per rail.
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