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Old 4th April 2006, 02:48 PM   #1
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Default Bruno Putzeys' reference UcD amplifier

Hello everyone, i found a really interesting information about Bruno Putzey's (inventor of UcD) own selfbuilt amplifier on the hypex homepage:

--snip--
Two UcD modules on a mainboard. Input buffering is fully discrete and dozens of LED's act as stable, low noise zener diodes. In fact, Bruno once said that he could read the newspaper by just lifiting the cover of the amplifier ;-)

There are no regular voltage regulators to be found inside. A couple of fully discrete circuits (lots of LED's) provide a very low noise, high PSRR power supply. Bruno found regular zener diodes to be far too noisy for this purpose.
--snip--

Does anyone know how to implement input buffering and voltage regulation with LEDs?? Hey, this might also look cool

Greetings,
Nils
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Old 5th April 2006, 03:28 AM   #2
ghemink is offline ghemink  Netherlands
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Default Re: Bruno Putzeys' reference UcD amplifier

Quote:
Originally posted by nilsomat
Hello everyone, i found a really interesting information about Bruno Putzey's (inventor of UcD) own selfbuilt amplifier on the hypex homepage:

--snip--
Two UcD modules on a mainboard. Input buffering is fully discrete and dozens of LED's act as stable, low noise zener diodes. In fact, Bruno once said that he could read the newspaper by just lifiting the cover of the amplifier ;-)

There are no regular voltage regulators to be found inside. A couple of fully discrete circuits (lots of LED's) provide a very low noise, high PSRR power supply. Bruno found regular zener diodes to be far too noisy for this purpose.
--snip--

Does anyone know how to implement input buffering and voltage regulation with LEDs?? Hey, this might also look cool

Greetings,
Nils

About input buffering with LEDs I don`t know. However for voltage regulation, in a position where you would normally use a zenerdiode, you would put a number of LEDs in series until you get the desired voltage over that stack of LEDs.

Gertjan
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Old 5th April 2006, 04:54 PM   #3
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@ Nils

Hi

Give a mail address and i`ll send you an ELRAD article referring to this.
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Old 5th April 2006, 05:49 PM   #4
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Default Re: Bruno Putzeys' reference UcD amplifier

Quote:
Originally posted by nilsomat
Hello everyone, i found a really interesting information about Bruno Putzey's (inventor of UcD) own selfbuilt amplifier on the hypex homepage:

--snip--
Two UcD modules on a mainboard. Input buffering is fully discrete and dozens of LED's act as stable, low noise zener diodes. In fact, Bruno once said that he could read the newspaper by just lifiting the cover of the amplifier ;-)

There are no regular voltage regulators to be found inside. A couple of fully discrete circuits (lots of LED's) provide a very low noise, high PSRR power supply. Bruno found regular zener diodes to be far too noisy for this purpose.
--snip--

Does anyone know how to implement input buffering and voltage regulation with LEDs?? Hey, this might also look cool

Greetings,
Nils
Why don't you ask Bruno directly? I'm sure he'll give some info
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Old 5th April 2006, 05:52 PM   #5
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Quote:
Originally posted by lenz
@ Nils

Hi

Give a mail address and i`ll send you an ELRAD article referring to this.
Mee too please I want the ELRAD article.

Thanks,

- dan
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Old 6th April 2006, 03:19 AM   #6
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Quote:
Originally posted by lenz
@ Nils

Hi

Give a mail address and i`ll send you an ELRAD article referring to this.

Hi Lenz,

Kindly send ELRAD article to me also:

info@workhorsetechnologiesindia.com


regards,
K a n w a r
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Old 6th April 2006, 06:37 AM   #7
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@lenz: Thank you for your nice offer! Can you please send it to :
nilsp -at- gmx -dot- net
Thank you!
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Old 6th April 2006, 09:57 AM   #8
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What's ELRAD?

Maybe you can quote the relevant text, link to it or hell, post it here?
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Old 6th April 2006, 11:17 AM   #9
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Quote:
Maybe you can quote the relevant text, link to it or hell, post it here
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Old 6th April 2006, 12:28 PM   #10
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Oh, sorry, but ELRAD is a death german electronic magazine and I`ve
the article only as scanned PDF.
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