Belleson Superpower regulator, here's the schematic - diyAudio
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Old 31st August 2012, 04:58 PM   #1
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Default Belleson Superpower regulator, here's the schematic

I just found it on the website of the United States Patent and Trademark Office , where they call it application number 20100327834 . I was delighted to see that the very first word-page begins with the phrase "FEDERALLY SPONSORED RESEARCH". Gub'munt money put to good use.

The circuit is pretty cute. A conventional series pass element (NPN emitter follower) delivers current to the load. Its base is driven by an Nchannel JFET source follower, and the gate of this JFET is controlled by the error amplifier. The error amplifier and the reference voltage are bootstrapped from the output. Since the output is presumably much less noisy than the input, this creates a virtuous cycle of low noise goodness, similat to the Jung Super regulator and others. Another cuteness is that the error amplifier's supply voltage (VCC - VEE) is less than the output voltage; he "floats" the negative supply to the opamp. This gives the option of using fast, rail-to-rail, CMOS 5 volt opamps while providing a 15 volt (or 24 volt) output. Sweet.

I've attached the circuit schematic (.png file) and the entire patent application (.pdf files). Enjoy!

Grrr, I had to divide the application into 5 pieces to get each file size down below the byte limit for posting. Sorry about that. Just download em and assemble them together using Acrobat on your 'puter.
Attached Images
File Type: png Belleson_schematic.png (19.9 KB, 1753 views)
Attached Files
File Type: pdf part1.pdf (115.1 KB, 454 views)
File Type: pdf part2.pdf (115.0 KB, 229 views)
File Type: pdf part3.pdf (110.8 KB, 180 views)
File Type: pdf part4.pdf (107.5 KB, 175 views)
File Type: pdf part5.pdf (142.8 KB, 214 views)
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Old 5th September 2012, 09:12 PM   #2
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You could also use PAT2PDF - Free PDF copies of patents: Download and print! for downloading the whole patent.
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Old 20th September 2012, 12:07 AM   #3
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Quote:
Originally Posted by transistormarkj View Post
the very first word-page begins with the phrase "FEDERALLY SPONSORED RESEARCH".
Just after that, it says "Not Applicable." The research was sponsored by curiosity and audiophile-ity :-).

Quote:
Originally Posted by transistormarkj View Post
The circuit is pretty cute.
Thanks!

Quote:
Originally Posted by transistormarkj View Post
while providing a 15 volt (or 24 volt) output.
(or 450V).

Also, note that the JFET can provide a ton of drive current to the series pass device base without loading the error amp at all. And the (only) two input connections are high impedance, which provides very high ripple rejection across a very wide bandwidth.
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Old 20th September 2012, 12:10 AM   #4
jtwrace is offline jtwrace  United States
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I've heard nothing but great things about these regs.
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Old 30th March 2013, 08:38 PM   #5
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now how about a BOM?
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Old 30th March 2013, 09:48 PM   #6
Ketje is offline Ketje  Belgium
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Oh yes,pretty cute,but I don't get it :-(
The action of A1 makes VR9=VREF and thus IR9=VREF/R9
IR9 goes throug R8 making VR8=IR9.R8=VREF.R8/R9
VR8+VR9=VREF(1+R8/R9)=K
VR12+K=VOUT ! So the entire variation of VOUT is found on R12.
There is no regulaion of VR12 ,how is VOUT regulated ???
Mona
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Old 30th March 2013, 11:15 PM   #7
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The inventor presents the relevant equations on page 3 of the patent, see "part4.pdf". Starting at paragraph 33, he derives equations for the operation of the circuit in Figures 3 & 4 of the patent. Those Figures are contained in "part1.pdf".

Or just build a SPICE simulation model and vary Vinput. Does Voutput remain constant and regulated? Vary Rload; does Voutput remain constant?

Last edited by Mark Johnson; 30th March 2013 at 11:19 PM.
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Old 31st March 2013, 12:39 PM   #8
Ketje is offline Ketje  Belgium
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After a good night sleep,I see the light :-)
The circuit can work very well.VR11 is constant too making the current in R12 only dependent of VOUT and is adjusted if that varies.So R12 determens the VOUT.
There is something missing,a capacitor between the supplypins of A1.
Mona

Last edited by Ketje; 31st March 2013 at 12:45 PM.
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Old 1st April 2013, 02:50 AM   #9
gootee is offline gootee  United States
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Or, a set of capacitors from each A1 supply pin to ground.

Now how about the load-current transient response speed and accuracy? What conductors in the layout would need to be short and low-inductance?

And what about remote sensing with Kelvin connections?
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Old 1st April 2013, 03:36 AM   #10
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Quote:
Originally Posted by jtwrace View Post
I've heard nothing but great things about these regs.

Then you haven't heard them --
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