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Old 22nd May 2011, 02:42 PM   #31
ccliu is offline ccliu  Taiwan
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Join Date: Oct 2007
IXTP01N100D
Revintage (Sweden): 50
Bayermar (Germany) 20
Tony (Philippines):30
Gluca (USA):10
Bas (Netherlands): 32
qusp (Australia): 20
leadbelly (Canada): 10
vince (Italy): 10
vgeorge (greece): 10
danFrank (USA): 30
mach1 (Australia): 32
au-trovaille (France): 30
tonywong (Singapore): 20
ccliu (Taiwan): 20

TO92 DN2540
Tony (Philippines): 30
Gluca (USA): 10
Bas (The Netherlands): 32

Last edited by ccliu; 22nd May 2011 at 02:46 PM. Reason: add more
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Old 22nd May 2011, 02:44 PM   #32
Gluca is offline Gluca  Italy
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Join Date: Nov 2004
Location: Back to Italy
IXTP01N100D
Revintage (Sweden): 50
Bayermar (Germany) 20
Tony (Philippines):30
Gluca (USA):10
Bas (Netherlands): 32
qusp (Australia): 20
leadbelly (Canada): 10
vince (Italy): 10
vgeorge (greece): 10
danFrank (USA): 30
mach1 (Australia): 32
au-trovaille (France): 30
tonywong (Singapore): 20

TO92 DN2540
Tony (Philippines): 30
Gluca (USA): 10
Bas (The Netherlands): 32
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Old 22nd May 2011, 03:16 PM   #33
panos29 is offline panos29  Greece
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I would like to add 40 units of IXYS depletion mode fets for me too.

Great initiative! thanks!
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Old 22nd May 2011, 03:51 PM   #34
Gluca is offline Gluca  Italy
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Join Date: Nov 2004
Location: Back to Italy
IXTP01N100D
Revintage (Sweden): 50
Bayermar (Germany) 20
Tony (Philippines):30
Gluca (USA):10
Bas (Netherlands): 32
qusp (Australia): 20
leadbelly (Canada): 10
vince (Italy): 10
vgeorge (greece): 10
danFrank (USA): 30
mach1 (Australia): 32
au-trovaille (France): 30
tonywong (Singapore): 20
panons29 (greece): 40


TO92 DN2540
Tony (Philippines): 30
Gluca (USA): 10
Bas (The Netherlands): 32
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Old 22nd May 2011, 04:13 PM   #35
ccliu is offline ccliu  Taiwan
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Join Date: Oct 2007
Mine is omitted. Add back.

IXTP01N100D
Revintage (Sweden): 50
Bayermar (Germany) 20
Tony (Philippines):30
Gluca (USA):10
Bas (Netherlands): 32
qusp (Australia): 20
leadbelly (Canada): 10
vince (Italy): 10
vgeorge (greece): 10
danFrank (USA): 30
mach1 (Australia): 32
au-trovaille (France): 30
tonywong (Singapore): 20
panons29 (greece): 40
ccliu (Taiwan): 20

TO92 DN2540
Tony (Philippines): 30
Gluca (USA): 10
Bas (The Netherlands): 32
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Old 22nd May 2011, 05:43 PM   #36
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Location: The Netherlands
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Hi Gianluca,

Tell us some more about this pcb.

Cheers,
Bas
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Old 22nd May 2011, 07:23 PM   #37
Gluca is offline Gluca  Italy
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Ciao Bas

if you look at my schem at post #18 you will see the regulator on the left: it is a CCS shunting a big resistor and feeding the gate of a high voltage MOSFET: the CCS runs at 5mA and sets the voltage at the gate of the MOSFET, the regulated voltage at the source of the MOSFET is 4/5V below the gate voltage. Nothing fancy but it helps in knocking out +50dB of noise. On the right the CCS and tube (that we can eliminate from the PCB). When you use the mu-follower output form the CCS the power supply noise rejection is poor and you want it to be as clean as possible in preamps. So I thought that retaining the regulator on the PCB might be useful. In case you need the CCS for a long-tailed pair or cathode followers (ie on cathodes) the regulator should be bypassed.

let me post a semplified schematic.
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Old 22nd May 2011, 07:40 PM   #38
Gluca is offline Gluca  Italy
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Location: Back to Italy
REGULATOR+CCS ... schematic. See previous post for comments
Attached Images
File Type: jpg CCS_REG_GLUCA_05_22.JPG (225.8 KB, 231 views)
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Old 23rd May 2011, 01:07 AM   #39
diyAudio Member
 
Join Date: May 2005
Location: California
IXTP01N100D
Revintage (Sweden): 50
Bayermar (Germany) 20
Tony (Philippines):30
Gluca (USA):10
Bas (Netherlands): 32
qusp (Australia): 20
leadbelly (Canada): 10
vince (Italy): 10
vgeorge (greece): 10
danFrank (USA): 30
mach1 (Australia): 32
au-trovaille (France): 30
tonywong (Singapore): 20
panons29 (greece): 40
ccliu (Taiwan): 20

TO92 DN2540
Tony (Philippines): 30
Gluca (USA): 10
Bas (The Netherlands): 32
DanFrank (USA): 30

I will take 30 of the TO-92 DN2540 also (as per above)... Thanks, Daniel
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Old 23rd May 2011, 05:37 AM   #40
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Join Date: May 2007
Quote:
Originally Posted by danFrank View Post
IXTP01N100D
reVintage (Sweden): 50
Bayermar (Germany) 20
Tony (Philippines):30
Gluca (USA):10
Bas (Netherlands): 32
qusp (Australia): 20
leadbelly (Canada): 10
vince (Italy): 10
vgeorge (greece): 10
danFrank (USA): 30
mach1 (Australia): 32
au-trovaille (France): 30
tonywong (Singapore): 20
panons29 (greece): 40
ccliu (Taiwan): 20

TO92 DN2540
Tony (Philippines): 30
Gluca (USA): 10
Bas (The Netherlands): 32
DanFrank (USA): 30
reVintage (Sweden) 10

I will take 30 of the TO-92 DN2540 also (as per above)... Thanks, Daniel
DN2540 as added to the list above.
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