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The simplistic Salas low voltage shunt regulator
The simplistic Salas low voltage shunt regulator
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Old 17th February 2012, 03:42 PM   #4811
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Quote:
Originally Posted by dimkasta View Post
I expected something like that about the motor. I tried to edit the post to make a correction but the 30minutes had passed
I do not plan to power the motor directly. More of its driving circuit instead, so I don t think it would be much of a problem as a load.
I found a big bunch of 2SK170BL yesterday rated at between 6 and 10 mA so I guess I ll be fine using them (I hate waiting for stuff....)
Powering its control electronics should be practical.
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Old 17th February 2012, 03:57 PM   #4812
dimkasta is offline dimkasta  Greece
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Quote:
Originally Posted by nicoch58 View Post
the Technics SL1200 don't use a sort of elettronic feedback for control the speed ?
Yes, I plan on just replacing the regulator and the transformer/filter. I will still use the normal control and drive circuitry
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Old 17th February 2012, 04:00 PM   #4813
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Hope that it bears fruit there, because its not signal circuits. You will let us know.
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Old 17th February 2012, 04:47 PM   #4814
jackinnj is offline jackinnj  United States
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The simplistic Salas low voltage shunt regulator
Unloaded it runs 280mA, the load is 150mA, injected current was 50mA -- the level Walt Jung used for his 1995 articles...and yes, the Zobel termination was used.
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Old 17th February 2012, 05:26 PM   #4815
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Very good practical result on AP indeed. Without ''hot-rod'' spare current conditions even. Did you check noise if with a >=220uF Vref filter capacitor?

edit. Here is my bib simulation with your CCS/load settings. Repeating your Audio Precision real measurement for easy check.
Attached Images
File Type: gif SimZ1_1_Jack_settings.gif (11.2 KB, 569 views)
File Type: gif Z_Salas_BIB.gif (18.0 KB, 587 views)
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Old 17th February 2012, 05:44 PM   #4816
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
You are right, the measurement shows less climb rate beyond audio range. Measuring very near but even better than simulating, is a good thing. Chuffed.
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Old 17th February 2012, 06:12 PM   #4817
TheShaman is offline TheShaman  Europe
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Good results, indeed!
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Old 17th February 2012, 10:07 PM   #4818
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Quote:
Originally Posted by didiet78 View Post
Hi Salas,
Can you suggest me which one Shunt reg suitable for Pumpkin Pre-Amp (+/- 24V, 150mA) and for Aleph 1.7 (+60V, 200mA)?

Didiet
1.1 bib, or reflektor, and for +60V the Krivium reflektor (#4797 change R4 to 10K, R1 to 1R8).
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Old 17th February 2012, 10:56 PM   #4819
jameshillj is offline jameshillj  Australia
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Hi Salas,
While you're on the recommending subject, what versions recommended for the 1541A dac chip (-15v, -5v, +5v - all about 30mA) and Kwak clock (+/- 15v - 20mA)

I did get a number of the DC B1 (Hypnotize) pcbs for this project but perhaps a simpler set?

Thanks.
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Old 17th February 2012, 11:35 PM   #4820
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
BIB 1.1 with 220uf vref cap and 1000uf in the clock's one.
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