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Old 5th December 2012, 03:27 PM   #1
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Default Amplificador SUBZERO

SUBZERO

Hello fellow forum would like to know if anyone har Zero sub amplifier, is an amplifier that caught my Atencio.
It is the famous Dr Jacoid
> Output power (RMS) 180W into 8 ohms -------------
> Output power (RMS) 230W into 4 ohms -------------
> Output (music) --------- 220-230W into 8 ohms
> Output (music) --------- 270-300W into 4 ohms
> Check osetljivost/impedansa----0, 6V/47koma (by 200Wrms ohms /
> ----- 7 Hz 112KHz-/-3dB frequency response (to less than 0.01% distortion)
> ------------------- THD <0.003% (a 130WRMS into 8 ohms)
> ------------------- THD <0.005% (a 180WRMS into 4 ohms)
> S/N------------ noise> 95 dB (compared to 100Wrms)
> ------- Damping factor> 300 (in 150WRMS into 8 ohms)

Notice of Copyright. Everything on this website is copyrighted by Dr. cheekbones Borivoje. Reproduction or re-publication by any means, electronic, mechanical or electro-mechanical, is strictly prohibited by international copyright laws. The author (Dr. Borivoje Jagodic) grants the reader the right to use this information for personal use and also allows one (1) copy may be made for reference. Commercial use is prohibited without the express written authorization of Dr. cheekbones Borivoje. Anyone interested in using my designs for the purposes commerrcial is free to contact me at my email address.
http://bas.elitesecurity.org/indexV.htmlEL DIAGRAM


AMPLIFICADOR SUB ZERO

I'm making the diagram in proteus but I'm also good at it when I upload Temin archivo.Para help me simulate


AMPLIFICADOR SUB ZERO

I'm making the diagram in proteus but I'm also good at it when I upload Temin archivo.Para help me simulate

Click the image to open in full size.

http://rapidshare.com/files/1527875710/subzerosema.pdf

http://rapidshare.com/files/568906755/subzero.DSN


Last edited by SERGIODS; 5th December 2012 at 04:05 PM.
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Old 7th December 2012, 03:51 AM   #2
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Quote:
Originally Posted by SERGIODS View Post
SUBZERO

Hello fellow forum would like to know if anyone har Zero sub amplifier, is an amplifier that caught my Atencio.
It is the famous Dr Jacoid
> Output power (RMS) 180W into 8 ohms -------------
> Output power (RMS) 230W into 4 ohms -------------
> Output (music) --------- 220-230W into 8 ohms
> Output (music) --------- 270-300W into 4 ohms
> Check osetljivost/impedansa----0, 6V/47koma (by 200Wrms ohms /
> ----- 7 Hz 112KHz-/-3dB frequency response (to less than 0.01% distortion)
> ------------------- THD <0.003% (a 130WRMS into 8 ohms)
> ------------------- THD <0.005% (a 180WRMS into 4 ohms)
> S/N------------ noise> 95 dB (compared to 100Wrms)
> ------- Damping factor> 300 (in 150WRMS into 8 ohms)

Notice of Copyright. Everything on this website is copyrighted by Dr. cheekbones Borivoje. Reproduction or re-publication by any means, electronic, mechanical or electro-mechanical, is strictly prohibited by international copyright laws. The author (Dr. Borivoje Jagodic) grants the reader the right to use this information for personal use and also allows one (1) copy may be made for reference. Commercial use is prohibited without the express written authorization of Dr. cheekbones Borivoje. Anyone interested in using my designs for the purposes commerrcial is free to contact me at my email address.
http://bas.elitesecurity.org/indexV.htmlEL DIAGRAM


AMPLIFICADOR SUB ZERO

I'm making the diagram in proteus but I'm also good at it when I upload Temin archivo.Para help me simulate


AMPLIFICADOR SUB ZERO

I'm making the diagram in proteus but I'm also good at it when I upload Temin archivo.Para help me simulate

Click the image to open in full size.

http://rapidshare.com/files/1527875710/subzerosema.pdf

http://rapidshare.com/files/568906755/subzero.DSN

upload info
Attached Images
File Type: jpg sub zero-SERGIODS.JPG (476.8 KB, 427 views)
Attached Files
File Type: zip subzero.zip (23.8 KB, 75 views)
File Type: pdf subzerosema.pdf (33.5 KB, 100 views)

Last edited by SERGIODS; 7th December 2012 at 03:56 AM.
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Old 7th December 2012, 09:28 AM   #3
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please share also the PCB foil pattern and lay-out
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Old 7th December 2012, 02:03 PM   #4
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Quote:
Originally Posted by warrior007 View Post
please share also the PCB foil pattern and lay-out
Just make the diagram.
in proteus software.
Now I want to make the simulation of the amplifier.
No simulation runs.
So I turned up the diagram.
to check for errors.
I would like to help me check.
Best regards sergio.
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Old 24th December 2012, 05:20 PM   #5
Vostro is offline Vostro  South Africa
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Just saw this thread and thought I could help, sorry its late.
I've had to make some very minor changes.

Hope its what you wanted.

I use Proteus for PCB design and microcontroller sim,
but I find it limiting, something like Multisim is more versatile.

Regards

Edit: fuses are shorted out to simulate graphs, since they don't have proper sim data.
Attached Images
File Type: jpg subzero.jpg (233.8 KB, 321 views)
Attached Files
File Type: zip Subzero.zip (231.6 KB, 47 views)

Last edited by Vostro; 24th December 2012 at 05:26 PM.
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Old 24th December 2012, 10:38 PM   #6
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What's the interest? - this design is 95% Hitachi app. notes from >30 years ago.
It only differs in minor details and by using modern LATFETs. Get rid of the sluggish
MJE340/350 and use decent VAS transistors and watch it improve. You will find it
has been simmed by a lot of folks who only just rediscovered it for themselves.
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Last edited by Ian Finch; 24th December 2012 at 10:42 PM.
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Old 25th December 2012, 08:16 AM   #7
Vostro is offline Vostro  South Africa
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idk, but I just corrected some things, so he can see how to get a circuit to sim in Proteus,
Now he can change things, to any topology.

Maybe IPS and VAS from Apex SR200 with some mosfets at output,
Its similar IPS and Diff VAS structure, just pimped to the max

Regards

Attached: Just for reference sake, heres a old Mosfet Amp.
Attached Images
File Type: jpg mosfetcircuit.jpg (80.3 KB, 259 views)

Last edited by Vostro; 25th December 2012 at 08:23 AM. Reason: Added circuit
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Old 25th December 2012, 02:19 PM   #8
CBS240 is offline CBS240  United States
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You need to have the same Vce on Qs 5&6, and to a lessor degree Qs 7&8. I would change the mirror (Qs 7&8) to a Wilson mirror. This way you can use better matched small signal transistors for the mirror and only need 1) TO-126 device to load the VAS. As for Qs 5&6, you need to add a cascode to Q5, where Q5 collector drives emitter of BJT (or source of fet), base (gate) tied to GND, and collector (drain) connected to the mirror. This will make it so as the average Vce of Qs 5&6 are equal, so then is Pd and temperature rise. Since Vbe is dependent on temperature, if one LTP device gets hotter than the other it will throw off the balance and you want to maintain a balance in the LTP in order to maintain stable DC bias and have a more symetrical transfer function.
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Old 25th December 2012, 10:23 PM   #9
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Arrow very well

Quote:
Originally Posted by Vostro View Post
Just saw this thread and thought I could help, sorry its late.
I've had to make some very minor changes.

Hope its what you wanted.

I use Proteus for PCB design and microcontroller sim,
but I find it limiting, something like Multisim is more versatile.

Regards

Edit: fuses are shorted out to simulate graphs, since they don't have proper sim data.
Thanks looks luxurious VOSTRO I also do not use the Multisim well, so I wanted to help. In your opinion after such a simulation is how much power this amp came with an eight-ohm load.
the bias of each transistor is 120 + milliamps

PS I did the PCB in proteus for I see that I think there is easier to make the pcb in ares

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Old 26th December 2012, 11:27 AM   #10
Vostro is offline Vostro  South Africa
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I don't remeber how good the SOA of those mosfets are, from a quick look, they dont seem that great.
Amp should drive 200W (220W with nice supply) into 8R, maybe abit more.

In sim it gives over 250W into 8R.

Last edited by Vostro; 26th December 2012 at 11:31 AM.
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