General purpose shunt regulator

Lumba Ogir · 28th January 2009, 04:59 PM

Hi,
poor man`s general purpose shunt regulator, precipitately drawn, simulated in the head. Omissions and errors reserved!

Zen Mod · 28th January 2009, 06:14 PM

Quote:

Originally posted by Lumba Ogir
Hi,
poor man`s general purpose shunt regulator, precipitately drawn, simulated in the head. Omissions and errors reserved!

poor man's .........

only if you replace 7 pcs of 2SK170 with 7 pcs of BF245(A/B/C) .......

joker .....

Lumba Ogir · 28th January 2009, 06:34 PM

Zen Mod,
I liked that.

In fact, four more pieces in the high-budget version (current mirror).

Lumba Ogir · 29th January 2009, 07:13 AM

apassgear,
got disappointed and I sincerely apologize.

Thank you Zen Mod, I will remember your kind attitude.

Lumba Ogir · 29th January 2009, 08:47 AM

Dear Sirs,
it could be mentioned in parentheses that the sonic performance of shunt regulators cannot be compared to the 15kHz IC types, which have an immense circuit complexity and suffer from devastating GNF effects and other anomalies in audio use. Yet many seriously meant attempts for "improvement" have been made over the years. What a waste of resources. However, shunt regulators work in a kind of class A so power dissipation is a problem in some situations.

h_a · 29th January 2009, 09:57 AM

Hi Lumba,

that must be the first readable schematic I've seen from you

Nice toy! However, I do not get your attitude with respect to negative feedback and regulators; every regulator uses in principle 100% negative (voltage) feedback as it does not provide any gain.

Have fu, Hannes

jan.didden · 29th January 2009, 10:25 AM

Quote:

Originally posted by h_a
[snip]However, I do not get your attitude with respect to negative feedback and regulators; every regulator uses in principle 100% negative (voltage) feedback as it does not provide any gain.

Have fun, Hannes

Exactly. The only way a regulator can regulate is via feedback. Shunt or series reg.

Jan Didden

Zen Mod · 29th January 2009, 10:34 AM

be it any sort of zenner - follower ..... even that is feedback mechanismus .....

shall we proceed ...... either in constructive , either in joyful off topic manner ...

PMA · 29th January 2009, 10:49 AM

Emitter follower = 100% voltage feedback

Lumba Ogir · 29th January 2009, 10:58 AM

Hannes,
right, I`m blaming my software, the only one I can handle.

Voltage followers use 100% feedback, like the CFP series pass element above. The number of stages has a vital importance in that regard, it`s about time. Feedback over not more than two stages is acceptable for me.

29th January 2009, 09:57 AM	#6
h_a diyAudio Member Join Date: Sep 2006 Location: Graz, Austria	Hi Lumba, that must be the first readable schematic I've seen from you Nice toy! However, I do not get your attitude with respect to negative feedback and regulators; every regulator uses in principle 100% negative (voltage) feedback as it does not provide any gain. Have fu, Hannes __________________ fresh matched IRFP240/IRFP9240 fets \|\| AlephJ/JX-kits F5 transistor kits \|\| Burning Amp BA-1/2 transistor kits

29th January 2009, 10:34 AM	#8
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	www.DiySemantic.com be it any sort of zenner - follower ..... even that is feedback mechanismus ..... shall we proceed ...... either in constructive , either in joyful off topic manner ... __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

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28th January 2009, 06:34 PM	#3
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Zen Mod, I liked that. In fact, four more pieces in the high-budget version (current mirror).

29th January 2009, 07:13 AM	#4
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	apassgear, got disappointed and I sincerely apologize. Thank you Zen Mod, I will remember your kind attitude.

29th January 2009, 08:47 AM	#5
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Dear Sirs, it could be mentioned in parentheses that the sonic performance of shunt regulators cannot be compared to the 15kHz IC types, which have an immense circuit complexity and suffer from devastating GNF effects and other anomalies in audio use. Yet many seriously meant attempts for "improvement" have been made over the years. What a waste of resources. However, shunt regulators work in a kind of class A so power dissipation is a problem in some situations.

29th January 2009, 10:49 AM	#9
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Emitter follower = 100% voltage feedback

29th January 2009, 10:58 AM	#10
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Hannes, right, I`m blaming my software, the only one I can handle. Voltage followers use 100% feedback, like the CFP series pass element above. The number of stages has a vital importance in that regard, it`s about time. Feedback over not more than two stages is acceptable for me.