The simplistic Salas low voltage shunt regulator - Page 39 - diyAudio
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Old 8th June 2009, 06:55 PM   #381
iko is offline iko  Canada
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Top secret documents from an encounter of the third kind with alien intelligence from the world of SPIKO have been obtained and are called for immediate public release. As these facts are too shocking, the reader discretion is advised.

HI-SCI-FI Productions bring you the all discrete shunt regulator v2d.

The unmatched psrr, as compared to v1 (green v2d, blue v1).
Click the image to open in full size.

Shocking output impedance, too small to measure without a quantum o-sci-fi-lloscope TM, first shown in db.
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And also in ohms, next to v2d
Click the image to open in full size.

And also alone, measured at below 25 nanoOhms across most of the frequency range of interest.
Click the image to open in full size.

And the circuit, 2009 (c) ikoflexer
Click the image to open in full size.

Due to its unstable quantum state, do not attempt this at home unless you can get a hold of a few stabilizing salasion particles. However, alien diplomats have promised one case of Canadian beer sent to your door if you can get a stable version of similar performance without employment of said particles.

Disclaimer: no animals have been harmed in these simulated experiments, except, perhaps, for a certain cat belonging to one named Schroedinger, and that was way back in 1935.
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Old 9th June 2009, 05:25 AM   #382
jam is offline jam  United States
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Iko,

What happened to the capacitor at the junction of J& and R14?

Jam
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Old 9th June 2009, 05:51 AM   #383
Salas is offline Salas  Greece
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Funny introduction style Iko. I like it.
Will you attempt to make it? Of course after the superconductive pcb and cables will be delivered from planet Krypton.
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Old 9th June 2009, 12:00 PM   #384
iko is offline iko  Canada
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Jam, at this level of psrr performance that capacitor has no effect.

salas, you started with the funnies, what can I say
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Old 9th June 2009, 12:38 PM   #385
mikelm is offline mikelm  England
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Quote:
Originally posted by jam
Iko,

What happened to the capacitor at the junction of J& and R14?

Jam
What happened to the compensation cap !!
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Old 9th June 2009, 12:39 PM   #386
Stuey is offline Stuey  Australia
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Hey, I'm not up with all this funky talk...

Iko, does that version just above work fine, or is it unstable? I'm a bit thick...

Cheers

Stuey
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Old 9th June 2009, 12:47 PM   #387
iko is offline iko  Canada
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Sorry guys, the circuit is not a lie, but it is meant as a joke. It's a real circuit in the sense that in simulation you get this amazing performance, but in reality I don't think it can be made stable.

Here's a challenge to all of you. If anyone can make it not oscillate and maintain any semblance of the shown performance above, you will get a case of beer delivered to your door, where ever you are.

Mike, what you call the compensation cap was used before because it improved a bit the psrr performance ( no effect on output impedance); but this circuit does not need it.

So, let me make it clear, I do not intend to build this because I do not believe it can be made stable. The loop gain is through the roof!
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Old 9th June 2009, 12:56 PM   #388
Stuey is offline Stuey  Australia
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Ahhh, so I'm not that thick...
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Old 9th June 2009, 01:03 PM   #389
jam is offline jam  United States
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Iko,

First things first..............what brand of beer?

Jam
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Old 9th June 2009, 01:04 PM   #390
mikelm is offline mikelm  England
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I mean't the miller type cap - but perhaps it's not necessary unless someone intends to build it
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