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The simplistic Salas low voltage shunt regulator
The simplistic Salas low voltage shunt regulator
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Old 25th January 2012, 06:48 PM   #4731
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
No in general, 1.1BIB in GB for pcbs sometimes here in DIYA, but you missed last one by a week late. Make reflektor on matrix board its the easiest.
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Old 25th January 2012, 06:50 PM   #4732
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Quote:
Originally Posted by krivium View Post
i have acces 2sc2240 or bc 639. Are they ok?
Only if you can cool Q3 with TO-92 minisinks. Its a matter of dissipation for that high Vout. The others in the current mirror don't suffer as much voltage drop.
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Old 25th January 2012, 06:58 PM   #4733
carlmart is offline carlmart  Brazil
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My problem is sourcing the parts from Brazil can be difficult and expensive.

If I can get all the parts from one place, then projects can be accomplished.
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Old 25th January 2012, 07:18 PM   #4734
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Reflektor has the easiest parts. Almost any pnp transistor type and two very well stocked mosfet types. For its Jfet you can use many types. State the application (Vout, current, type of machine) so I can give you more precise info.
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Old 25th January 2012, 07:43 PM   #4735
carlmart is offline carlmart  Brazil
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Reflektor is a company? I couldn't find it in Google.

I should be buying a JC-2 preamp kit in eBay this week, and it does carry a shunt supply on-board. So I thought I might replace it with a better shunt, and I thought of yours. What do you think?
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File Type: jpg JC-2 shunt supply.jpg (33.0 KB, 387 views)

Last edited by carlmart; 25th January 2012 at 07:58 PM.
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Old 25th January 2012, 07:58 PM   #4736
AndrewT is offline AndrewT  Scotland
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CCS followed by a Shunt reg.
Exactly the same principle of operation as the Salas Shunt reg.
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Old 25th January 2012, 08:03 PM   #4737
carlmart is offline carlmart  Brazil
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The principle might be the same... but the details are different!
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Old 25th January 2012, 08:07 PM   #4738
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Start with that one and get a 1.1 BIB at a point when there will be another GB if you are ready made PCB minded. Then you can tell for differences yourself.

*Reflektor is one shunt design of mine based on current mirror principle.
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Old 25th January 2012, 08:12 PM   #4739
RCruz is offline RCruz  Switzerland
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The simplistic Salas low voltage shunt regulator
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Originally Posted by carlmart View Post
The principle might be the same... but the details are different!
Yes.. no mosfets and a zener for Vref .... you will be astonished when you build the bib
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Old 25th January 2012, 08:13 PM   #4740
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
TL431 is a chip, but it can be as noisy depending on Ik it runs.
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