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Old 7th April 2010, 12:06 PM   #41
diyAudio Member
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Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default This is the last time..the last complaining text i will publish

I have to say i feel good, i am feeling great! ... as i am
sure i am doing my best .... evaluating by the
weigthing results .. i found i have made something
positive, hundreds of happy folks building my amplifiers,
having fun, enjoying their lives .... they were received
in mine threads in a friendly way, have received help when they have
asked..when they have needed...all was explained in details

What have some others done? ..the minority that use to amuse me?.
years passed, they have promoted
themselves with the cost of others reduced to a minor part of the substract
or farth gazes evaporated...the owners of a great and very selfish know
how .. something that belongs to them and they do not want
to share ... or, in other way, want to trow in your face
the correct things from the mistakes you do ... alike a slap in
your face ...these ones do for themselves only, to feed their sick egoes.

They want a place below the sun, to be under the spot ligth, to be respected as skilled researchers...but without having to
work hard for it ... they want a place under the sun, but
do not want to move to the beach, also not feeling the heat of sunligth, the
sun burning their skins..they want the easy way producing hard time to others..
The bad and lazy way to achieve popularity.

I planted the seed of group, clan, tribe and crew
... a corporation staff ... a friendly group .... the idea
to belong to something .. to be a part of the
communitty .. what they have planted?

Criticisms, proving they are good and others are not so
good .... technocrats, defenders of the status quo ... rule
keepers, enemies from creativity, their ammunition is
jellows and envy .... they have offered to us, one or two
amplifiers along several years, doing almost nothing these last
five years passed.. orbiting other threads, having
few crumbs of fame at the expense of pulling the rug on others

One of the technologists did not even that ... nothing offered, nothing
mounted, no products, amplifiers, schematics, no picture .. nothing is DIY ...
just pretend that he is a consultant, an imposing one.... no consultancies contracted,
answering questions that were never have made and never
answering the questions we do directly to them .. so... do things only
for themselves .... spew things when is convenient to show off, showing off and self
promote ..... will never responds your questions...never doing thing for you or for the
forum.... they do not help because they want you to continue having doubts, so,
they will have the chance to give one on you ... to continue to have an advantage
related you.. absurdly selfish, very sick and abnormal behavior in my vision.

I use to explain all the few things i have leaned, and i do that in details, focused in the
ones have not too much knowledge, the beginners, the young guys that may need the same
help we have received from our friends in the past.....i use to burst some myths, and use
to try to show things are much more simple than some folks wants you to believe they are.

Some folks tries to make things looks much more difficult, this is to increase their own value, their own importance, when the ohms law is the best tool we have to understand,
some of them hates me, as i use to point that... when i do that they loose the tool they have to exercise sadists behavior pointing your to me, you and all forum, not to know things, to be ignorant..them we will continue to be under their boot

I think ... some of them give me clues their behavior is moved by their cowardice , as they do not show their amplifiers to they do not expose themselves..they go protected as
they do not show their products, and these products will allow us to evaluate them if they are so good the way they claim.... so...hidden this way, they go pretending they are special and using criticisms against others... evaluating the work others does, doing nothing alike annoying parasites buzzing around..sucking the blood of others not offering any drop of sweat to our community.

I am happy i could do.... moderators have supported and tollerated my exotic behavior because they have perceived i could be usefull for the forum, for the forum members and for
they are positive.

I will try to be less sensitive...i promisse, this is the last complaining text published!

Will let a thick skin to one will bother me anymore.


Full throotle amplifier manufacturing;, Sample Dx Classic

Last edited by destroyer X; 7th April 2010 at 12:22 PM.
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Old 7th April 2010, 12:46 PM   #42
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Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Build a Dx Amplifier, it is not symetrical, it is not a plague

or, at least, it is a different kind of plague.



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Old 7th April 2010, 01:07 PM   #43
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Location: Canandaigua, NY USA
The original topic was symmetry. IMHO there are only symmetric amp designs on paper. The currents in real amplifiers built with real parts are rarely symmetric. It's probably a curse that we all start with voltmeters and oscilloscopes, rather than current probes.

I may be barking up the wrong tree, but at least I'm barking!
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Old 7th April 2010, 01:12 PM   #44
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
and why I put in emitter resistors and base resistors even when operationally they are not needed.
an LTP whether BJT or jFET with 1r0 resistors in emitter/source tells a lot about currents.
regards Andrew T.
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Old 7th April 2010, 01:40 PM   #45
wahab is offline wahab  Algeria
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Location: algeria/france
Default Symetrical mosfet amp

symetrical differential amp using :

6 low power BJTs 2SA872A/2SC1775A
2 low power BJTs 2SA1145/2SC2705
6 high power lateral fets 2SJ50/2SK135
Supply is +-60V using a 500VA toroid.

I did use it from 1988 to this day , in the most
harsh conditions an amp can sustain, as amplifier
for my sets of keyborads on overheated stages,
for performances that did last as long as 5 hours
at full volume with four speakers totaling a 4 ohm load..
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Old 7th April 2010, 02:05 PM   #46
CBS240 is offline CBS240  United States
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Location: K-town
Originally Posted by AKSA View Post


May I ask you a question?

Are you male, or female? This is important, because I feel that if you represent yourself as a female, out of respect for women most men will not attack you, even if you attack them. This is a tactical advantage, which, if you misrepresent yourself, is not ethical.
I wouldn't consider Eva as attacking, pestering maybe. Her approach seems a little hard lined sometimes, but it is hard to argue with the logic and skill she brings to the forum. Personally I agree that with linear audio amps, it seems most all the circuits out there are 30+ years old. It would be nice to see some new ideas. There are few here (not including myself) that have the knowledge she has, especially with regard to switching circuits. I love to read her posts because there is usually some particular inside information there, based on personal experience, that cannot be found anywhere else, and I hope she continues to share her projects with us. I sense some frustration with regard to this thread, but I wouldn't consider it an all out attack on Carlos. Besides, is gender really relevant? The day I find fault and mis-information in her posts without her correcting is the day I criticize her........but that day has yet to be.

PS: Eva has never posted any photo of herself, but only her projects and magnetics creations, and there is no way these hands belong to a man.
adjustable SMPS
All the trouble I've ever been in started out as fun......
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Old 7th April 2010, 02:46 PM   #47
PMA is offline PMA  Europe
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Well said, CBS240.
Pavel Macura
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Old 7th April 2010, 03:23 PM   #48
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Even a LIN topology has a symetrical outputstage, so much for it being bad.........
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Old 7th April 2010, 03:25 PM   #49
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Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Well man....even the paper we use to print schematics is a symetrical thing.

this does not turn the paper, a symetric paper because of that... also we do not call it symetric papper.

The amplifier is the same up and down, exactly, alike mirrored... this one deserves the tittle symetric more than others.

If you prefer, to be precise, more symetrical than several others.


Full throotle amplifier manufacturing;, Sample Dx Classic
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Old 7th April 2010, 03:52 PM   #50
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Location: Recife - Brasil Northeast
Default Dear CBS, you are a good enginner, a clever man, but your know how about how to

identify signs will be rated C minus.

Three pictures...three hands.... one is a male, other a female and another one is the gay one..... send me your choice to see if you can do it.

I can enter this forum with a picture of Angeline Jolie...i can post my wife, or daugther feed to prove i am a girl.

Or you think i am a vessel?...a destroyer?

That's what happens, reason why people choice girl names...people goes sending charm alike you did..defending her...i do not know if this is the case,but i know girls that are in this forum using boy's names..and the opposite too.



.................................................. ..................................

I have invited that fat idiot, the brazilian, to go working for know..all i wanted in my whole life is to have a meeting with you.... are you free tonigth CBS 240?

To prove i am what i beautifull feet picture...only for you!

Click the image to open in full size.

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Full throotle amplifier manufacturing;, Sample Dx Classic

Last edited by destroyer X; 7th April 2010 at 04:04 PM.
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