The simplistic Salas low voltage shunt regulator - Page 568 - diyAudio
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Old 20th January 2013, 06:00 AM   #5671
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when you use obbligato premium gold as a coupling which end Is recommended to be In and which out for signal
do you recommend bypass of obbligato premium gold 4.7 uF - If you do which bypass and value - teflon ft-1 ft-2 ft-3
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Old 20th January 2013, 06:23 AM   #5672
agussug is offline agussug  Indonesia
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I don't think your question is in the right thread. It's for salas regulators.

Best Regards
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Old 1st February 2013, 01:04 PM   #5673
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Hi

Did anyone do a SMD pcb of either salas bib (v1.1) or v1.2r ??

Peter
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Old 1st February 2013, 01:10 PM   #5674
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Yep I did... Not of the (mos)fets though. But all LEDs, resistors etc are easily convertible to smd
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Old 1st February 2013, 06:44 PM   #5675
RollE2k is offline RollE2k  Sweden
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I would be interested in SMD low-current version also... if somebody would do a PCB :-)
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Old 3rd February 2013, 01:04 AM   #5676
Salas is offline Salas  Greece
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Still needing 100mA+ extra current to work nicely, due to the VMOS used. SMD other parts may cut you enough PCB area but your non shrinking problem will still be the sinks. So not a really drastic change to go SMD.
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Old 3rd February 2013, 08:30 AM   #5677
RollE2k is offline RollE2k  Sweden
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Is there any alternative VMOS we could change to then, to get lower current ability?
Also, i know it is recommended to shunt 70-150mA, would it perform alot worse if shunting 20-30mA?
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Old 3rd February 2013, 07:36 PM   #5678
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Hi all!
Got my mezmerizer working first try,lol.Rolled on the variac and all is well!
Waiting on some matched sk170 to land in the mail box and will finish the circuit,Both sides are at 10.3 works Perfect,lol.
Have a GREAT super bowl PARTY,I've got to start cooking and getting set up I wouldn't want a bunch of yelling hungy football fans yelling at the cook/bartender,We got plenty of home brew too .....I hope they don't fall a sleep during 45 mins of commericals,lol. got the al-ke-hol levels good and high in that beer lol.
THANKS SALAS!
have a good day!
NS
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Old 4th February 2013, 01:54 AM   #5679
Salas is offline Salas  Greece
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Very nice from scratch diy. Congrats. What is that 2.4mV RMS undulation on noise at ~16.5MHZ though? Too high to be a real product. A 150Meg scope should add its own noise floor more than any 20Meg one of course, but why wavy I wonder. Does it change if you remove the crocks to the TL71 DMM probes or dress the scope's probe differently? Is it there with the probe non end shorted when lying on the bench? What shows with 20 BWL pressed?
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Old 4th February 2013, 02:45 AM   #5680
iko is offline iko  Canada
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Measuring with the scope probe this way will always add some noise, in my experience. For critical measurements I always take the probe sheath off and use a very short solid copper wire from the scope probe to the load ground. Makes a big difference for sub-millivolt measurements. Hehe, your work brings back good memories.
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