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Old 8th April 2013, 08:26 PM   #111
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Location: Recife - Brasil Northeast
Default Brazilian files from Zimmer about the Dx Supply

You can find into the Dx Super A thread, files about the amplifier.

Here you have a link to all stuff:

https://mega.co.nz/#!5lFFQSRb!XVRt4T...uW6LFBkI6LeEGg

But i will upload each file to the forum too.

regards,

Carlos
Attached Images
File Type: jpg DX SUPPLY GUIA DE MONTAGEM.jpg (284.7 KB, 449 views)
Attached Files
File Type: pdf DX SUPPLY COBRE SILK.pdf (49.5 KB, 100 views)
File Type: pdf DX SUPPLY COBRE TONNER.pdf (49.3 KB, 91 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 8th April 2013, 08:28 PM   #112
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Default More files about the Dx Supply

Here you have them

regards,

Carlos
Attached Files
File Type: pdf DX SUPPLY DIMENSIONS.pdf (73.3 KB, 113 views)
File Type: pdf DX SUPPLY ESQUEMA.pdf (18.1 KB, 113 views)
File Type: pdf DX SUPPLY MASK SILK.pdf (48.9 KB, 96 views)
File Type: pdf DX SUPPLY MASK TONNER.pdf (49.0 KB, 93 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 14th April 2013, 10:45 AM   #113
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Default Pcboards, for Brazil, now in production

We are waiting...all tested... all finished..now it is time to relax.

Pictures is the former supply, the first one made..the smaller one...very nice too.


ATTENTION!

read the entire thread before assemble or install this supply together your amplifiers..there are several limits that you must know..it is not an Universal Supply that you can use anyway and anywhere, there are limits of voltage, current and as consequence limits of power.... read the ENTIRE thread in advance to build.

regards,

Carlos
Attached Images
File Type: jpg Dx Supply small a.JPG (319.0 KB, 402 views)
File Type: jpg Dx Supply small b.JPG (390.5 KB, 350 views)
__________________
Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg

Last edited by destroyer X; 14th April 2013 at 10:55 AM.
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Old 14th April 2013, 03:32 PM   #114
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Default Naturally i can help you if you have an special case

For instance:

- I have a 44 volts AC supply and i want to feed two channels of my amplifier that can put out XXX watts RMS at 8 ohms, YYY watts RMS at 4 ohms and ZZZ watts RMS at 2 ohms all specifications at less than 1 percent harmonic distortion...and i want to adjust the supply output to 46.3 volts DC, so, what gonna be the limits?... and what the heatsink size in area exposed to the air (all fins added one to the other, creating a single flat virtual fin)

- Can i operate 4 ohms and 2 ohms?

I can try to help you on that...just let me know.

But send me all informations you have..transformer VA or Watts, how many transformers you gonna use..how many Dx Supply circuits you intend to use...your mains fuse value (to the transformer primary), your power amplifier fuses values, and the kind of music you like and the application for the amplifier....it is for parties?... for sound instruments?... will be connected to organ or synthesizer,... do you use to play really loud.... do you accept some distortion?.... all informations are usefull to derate the supply performance to the worst case scenario.

I cannot make this study for hundreds of persons..but i can make for a few guys.... all data is important..schematics of amplifiers and all details you can provide me will be helpfull to re create the "scenery".

carlos.eugenio1951@yahoo.com

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg

Last edited by destroyer X; 14th April 2013 at 03:38 PM.
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Old 26th April 2013, 10:45 PM   #115
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Default Enjoy your stuff folks and have fun

I wish you all a great weekend.

regards,

Carlos
Attached Images
File Type: jpg P1010081.JPG (508.3 KB, 299 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 26th April 2013, 11:19 PM   #116
godfrey is offline godfrey  South Africa
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You drinking the peroxide?
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Old 28th April 2013, 10:10 AM   #117
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Default Ahahahahahahh!.... negative.... only Coca Cola

This Peroxide is the most strong we can obtain here...then we mix with Muriatic Acid and we use the mix to corrode copper to make pcboards,

Muriatic Aicid is Hydrochloric Acid

Here you can see something about:

How to make circuit boards fast - Dx way - YouTube

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 30th April 2013, 02:59 AM   #118
mrmay is offline mrmay  Colombia
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excellent design
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Old 30th April 2013, 10:23 AM   #119
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Default It is not mine.... Ampex made it.... i just used these last 40 years

Deeply tested....anything critical..you can replace transistors by thousands of other models, also resistors are not critical, zener is not critical, trimpot is not critical...transformer and voltages also not critical (must by higher than the zener...usually zener is one third of the input voltage), condensers not critical.

This is wonderfull, i have assembled and sold to Radio Amateurs (i am a HAM too) and nobody have ever complained.

Sony, and all audio brands have used in past amplifiers..then they decided to remove the stuff because increase cost and the audible advantage is not perceived by the average listener.

The Dx Super A is mine...not from the scratch...was a step by step evolution (several models) based into Doctor Self Blameless.

Blameless was alike a scratch, (a skeleton a basic structure, a topology, an idea devoid of details) something basic with awesome low THD, i have tweaked to sonics changing a lot of things in a step by step evolution, and this took almost 6 years long.. the starting point, the first 4 years surfing this forum, was dedicated to develop something alike Aksa 55 from Aspen Amplifiers, an abandoned design now a days, Hugh Dean and I have published the schematic, the basic schematic without some secrets that i have not used too.... well... was very basic, and Hugh Dean have made much better things since 2000.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg

Last edited by destroyer X; 30th April 2013 at 10:31 AM.
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Old 4th May 2013, 08:08 PM   #120
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Default Zimmer boards arrived

Carlos
Attached Images
File Type: jpg Dx suply componentes.JPG (441.2 KB, 221 views)
File Type: jpg Dx supply cobreado.JPG (385.0 KB, 97 views)
File Type: jpg Super A cobreado.JPG (530.2 KB, 104 views)
File Type: jpg Super A componentes.JPG (470.7 KB, 100 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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