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Old 3rd November 2004, 04:37 PM   #1
jmateus is offline jmateus  United States
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Default Amplifier from the 80's

I didn't realize that the size of the ziped file was too long, so
I'll publish only the schematic on this 30W JLH amplifier.
Sorry guys!
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Old 3rd November 2004, 05:25 PM   #2
Mark25 is offline Mark25  United Kingdom
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i can't see that either!
Mark
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Old 3rd November 2004, 06:15 PM   #3
audioPT is offline audioPT  Portugal
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Greetings from Portugal!

Hi Mateus,

Don't forget to atach the file!!

Um abraço deste seu amigo da terra de Camões.
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Old 4th November 2004, 11:12 AM   #4
boholm is offline boholm  Denmark
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You may email me the whole zip-file. I have been looking for it for so long. I hope that the resolution is better 200dpi so it will be easier to read.

And I could put it on the net, so others could get it too?
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Old 4th November 2004, 02:13 PM   #5
jmateus is offline jmateus  United States
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Default Amplifier from the eighties

I really tried to attach the file with the schematic only, actually
twice....But it didn't work for some reason.
And it is a relatively small file (95Kb) whereas the maximum
allowed by the forum is about 110Kb. It transcends my comprehension, because it took quite some time to upload...
and NADA, it didn't go!
If anyone is interested in the whole shmear feel free to e-mail
me directly, I'll be happy to send it.
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Old 4th November 2004, 02:30 PM   #6
Mark25 is offline Mark25  United Kingdom
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you may find it's already on Geoff Moss's excellent JLH site, if not, he's the man to forward the info to for the most efficient distribution IMO.
Mark
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Old 4th November 2004, 03:14 PM   #7
audioPT is offline audioPT  Portugal
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Default Re: Amplifier from the eighties

Hi again!

Quote:
Originally posted by jmateus
If anyone is interested in the whole shmear feel free to e-mail
me directly, I'll be happy to send it.
I can't email you...


Mateus, please send the file to my email and I'll put it here.

Here is my email: audiopt@sapo.pt

Regards
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Old 4th November 2004, 07:55 PM   #8
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Default My dear friend Mateus sent me the schematic last week

And more detailed informations i could not prepare to publish....first is copyrigth, i do not know if i can or cannot...really, i have no good knowledge about that....here, down in South America we copy freely..... have problems only if you copying, make the amplifier worst, or the text worst.

We have, here. real free competition, not only conversation about freedom..... (indignation related US elections results...against all the world!).

It is rare when i loose my mood.... this election turned me "red"...i cannot believe the results!

The magazine, where the schematic was found had year 2000 printed.

Of course, this is the publish date, the amplifier could be design before that.

The supply is 55 volts, i could not discover the current, and i am suspecting not a class A, as normally the 0.47ohms resistors are not adequated to hi current, as reduce the VCE voltage when not needed.

Hi Mat.... what about your stomach disease, result of elections?... i am furious.

regards all friends, even the ones that made terrible mistake, your brother, your cousin, or your son, will go to war!

Carlos:redhot: :redhot: :redhot: :redhot: :redhot: :redhot: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :headbash: :mad: :mad: :confused: :confused: :confused: :confused: :confused: :hot: :hot: :hot: :cannotbe: :cannotbe: :cannotbe: :scratch: :scratch: :scratch: :scratch:
Attached Images
File Type: jpg jlh 2000.jpg (81.4 KB, 515 views)
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Old 4th November 2004, 07:59 PM   #9
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Default Schematic again.

Here they are.... tried to remove all smilies...but they still there in text only i suppose.

We will see if only text or not.

Schematic again.

Carlos
Attached Images
File Type: jpg jlh 2000.jpg (81.4 KB, 430 views)
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Old 5th November 2004, 07:21 PM   #10
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Default Mateus sent me another one, a little bit better

Here is the scratch John Mateus scanned to us.

regards,

Carlos
Attached Images
File Type: jpg jlh 30w corrected.jpg (92.8 KB, 389 views)
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