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Salas SSLV1.3 UltraBiB shunt regulator
Salas SSLV1.3 UltraBiB shunt regulator
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Old 21st July 2018, 07:59 AM   #331
Swarky is offline Swarky  Canary Islands
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Quote:
Originally Posted by fedde View Post
You can use a lower voltage capacitor for C1. However, I think 5V is the minimal output voltage so you cannot do -3V...
I was under the impression it was symmetrical on the negative board and if necessary to use an LDO as in my application (Hagerman piccolo mc step up) it wouldn’t detract too much from the lower noise levels because it was on the negative rail.
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Old 23rd July 2018, 08:30 AM   #332
MagicBus is offline MagicBus  Greece
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Here is my little power station... 3,3V x2, 5V x2 , 10V x2. All grounds only meet at the obscure object of desire!
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Old 23rd July 2018, 09:58 AM   #333
Salas is offline Salas  Greece
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Salas SSLV1.3 UltraBiB shunt regulator
Quote:
Originally Posted by JOIMONF View Post
Looking at schemantic on build guide, I think it's a mistake:
''For CC <1A M1 IRF9610...''
Instead of less ''<'', does should not be more ''>''?
The IRF9610/610 at M1 position are trusty enough as alternatives to the listed Fairchilds for below 1A constant current at about 5V across them. Still their core to case thermal resistance is significantly higher and their positive/negative type curves are not as close but they develop less VGS voltage while being easier to find and as fast or little faster for parasitic capacitance.
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Old 23rd July 2018, 10:01 AM   #334
Salas is offline Salas  Greece
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Salas SSLV1.3 UltraBiB shunt regulator
Quote:
Originally Posted by MagicBus View Post
Here is my little power station... 3,3V x2, 5V x2 , 10V x2. All grounds only meet at the obscure object of desire!
Very nice
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Old 23rd July 2018, 10:03 AM   #335
Salas is offline Salas  Greece
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Salas SSLV1.3 UltraBiB shunt regulator
Quote:
Originally Posted by Swarky View Post
I was under the impression it was symmetrical on the negative board and if necessary to use an LDO as in my application (Hagerman piccolo mc step up) it wouldn’t detract too much from the lower noise levels because it was on the negative rail.
The negative 1.3 reg section can go down to around -5V DC output
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Old 23rd July 2018, 11:32 AM   #336
MagicBus is offline MagicBus  Greece
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Originally Posted by Salas View Post
Very nice

Thanks Salas!
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Old 23rd July 2018, 03:38 PM   #337
JOIMONF is offline JOIMONF
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Salas SSLV1.3 UltraBiB shunt regulator
Congratulations for this new reg. Salas, thanks for share and help.
I was confused, excited to find out, I read this thread on one sitting.
Now I learned that there are TWO substitutes for M1, for less than 1A. IRF9610. And then for high current, IRF9640. Ok. Ok.
Other than to power a DCB-03 preamplifier, and a 14v. Tripath chip amp., my plan is also use one UltraBiB as a prereg. set it at 7v. and then chain it to a several 500mA. modules ultralownoise 0.8mV. postregulators LT3405. These I got plenty and cheap on Taobao site. Are claimed a flexible voltage dropout between 1V. and 4V. So theoretically I could power many 3,3v and 5v. gizmos I have in my USB chain: Filters, hubs, memory sticks, clocks, etc.
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Old 25th July 2018, 12:52 AM   #338
JOIMONF is offline JOIMONF
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Salas SSLV1.3 UltraBiB shunt regulator
50R as R3 is also acceptable?
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Old 25th July 2018, 05:52 AM   #339
Salas is offline Salas  Greece
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Salas SSLV1.3 UltraBiB shunt regulator
Yes
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Old 25th July 2018, 03:49 PM   #340
JOIMONF is offline JOIMONF
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Salas SSLV1.3 UltraBiB shunt regulator
thanks!
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