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The simplistic Salas low voltage shunt regulator
The simplistic Salas low voltage shunt regulator
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Old 27th July 2013, 08:45 PM   #6111
stajo is offline stajo  Sweden
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The simplistic Salas low voltage shunt regulator
Thanks. If I would go for 65-67 VDC in and 55-57 Vout, since dual 24 V trafos is kinda more common then dual 25-26, what do I adjust?

Edit: I meen am I ok w above components and just adjust trimmer?

Last edited by stajo; 27th July 2013 at 09:10 PM.
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Old 27th July 2013, 09:27 PM   #6112
Salas is online now Salas  Greece
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The simplistic Salas low voltage shunt regulator
Better use R103/203 15K 1W in that case.
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Old 27th July 2013, 11:44 PM   #6113
AndrewT is offline AndrewT  Scotland
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Q102 (jFET) should not have a 15k in the source lead.
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Old 28th July 2013, 04:58 AM   #6114
Salas is online now Salas  Greece
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The simplistic Salas low voltage shunt regulator
It must be substituted altogether by it because of its VDS max and dissipation limitations at Stajo spec voltage level. I.e. all he shows red boxed in post 6107 gets deleted and replaced by 15K 2W.
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Old 28th July 2013, 06:04 AM   #6115
stajo is offline stajo  Sweden
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The simplistic Salas low voltage shunt regulator
So out of curiosity, if I would P2P the PSU along with the audio circuit, should I choose another version of SSLV instead?

And, if using one pos/neg SSLV per stereo BoSoZ, do you think should I keep R16-17/C3-4 RC or skip/replace it?

Or should I then use one pos/neg SSLV per channel?

How would you have done?
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Old 28th July 2013, 05:53 PM   #6116
Salas is online now Salas  Greece
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The simplistic Salas low voltage shunt regulator
No, 1.1 discussed offers itself for a less troublesome p2p, more secure against layout oscillations than some other versions.

Not sure about the local RC cell, it may be beneficial to the audio part for more reasons than the obvious extra filtering. Listen with it and the new PSU before attempting to delete it so to have some real comparison.
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Old 29th July 2013, 07:59 PM   #6117
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Hi, im planning on building a 2chassis dac of the latest peter daniels circuit with salas shunt psu in one box with dc out umbilical to the box with dac.

Well my simple question is, can i power additional lm317 regs from salas without disrupting the performance of the main output voltage of the shunt reg?
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Old 29th July 2013, 08:04 PM   #6118
Salas is online now Salas  Greece
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The simplistic Salas low voltage shunt regulator
They have been powering Buffalo with extra local regulators, other DACs with TL431s and the like. Each application has its own quirks though. Still there is not a bad record with driving post regulation.
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Old 30th July 2013, 07:44 AM   #6119
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thank you, Salas.
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Old 30th July 2013, 10:06 AM   #6120
lykkedk is offline lykkedk  Denmark
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Default 5 Vdc for Raspberry, squeezebox, etc... 1-2Aamp.

Hello...

I would like to know, if there is any build of 5vdc output (1-2amp.) for the shunt -reg. ?

I have tried to find it, but there are so many comments, that i find it hard to see.

I am looking for building a new PSU, for my raspberry and DAC.

thank you / Jesper.
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