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Old 23rd May 2012, 09:00 PM   #1511
wayne is offline wayne  United States
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If you had no resistor then the input is mega Ohms and not a good match at all probably really skewed.
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Old 24th May 2012, 02:09 PM   #1512
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Quote:
Originally Posted by wayne View Post
If you had no resistor then the input is mega Ohms and not a good match at all probably really skewed.
Good to know Wayne, thanks. I'll make sure I have a pocketful of resistors the next time I take the unit somewhere
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Old 24th May 2012, 02:24 PM   #1513
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Quote:
If you had no resistor then the input is mega Ohms
So, I was sort of right, in wrong kind of way...
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Old 26th June 2012, 05:21 PM   #1514
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Quote:
Originally Posted by Zen Mod View Post

programmed current for positive shunt reg : 60mA

programmed current for negative shunt reg : 30mA

per channel

back'o'napkin calc of exact Iq , per channel :
positive leg : 4 x 5mA + 3mA + 2 x 1mA +10mA= 34mA
negative leg : 2mA + 4,6mA + 10mA = 16,6mA

edit : presuming that each input Jfet is in 5mA ballpark

Is that a Pearl II or X-ONO current consumption figures? I'm trying to figure out what shunt settings I need.
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Old 26th June 2012, 05:58 PM   #1515
Zen Mod is offline Zen Mod  Serbia
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as I wrote - that's for XONO

I just made a mix up , posting in wrong thread
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Old 26th June 2012, 06:03 PM   #1516
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Old 26th June 2012, 06:04 PM   #1517
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thanx. how can I find out the Pearl 2 ones?
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Old 26th June 2012, 07:40 PM   #1518
Zen Mod is offline Zen Mod  Serbia
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Pearl II - current consumption per Wayne's schematic in post #1104 :

positive leg - (10+1+1+20,2+2,1+1)mA

negative leg - (10+2+4,7)mA
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Old 26th June 2012, 08:27 PM   #1519
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thank you, maître
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Old 26th June 2012, 08:33 PM   #1520
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