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Old 9th March 2012, 06:01 AM   #101
arche13 is offline arche13  France
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Originally Posted by arche13
f5 turbo version 50w 8 ohm, what case hifi2000 4u 400mm heavy is enough? Or which version of case in silicon ray?
Thank you jacco
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Old 9th March 2012, 03:40 PM   #102
thanong is offline thanong  United States
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Default F5 turbo

Quote:
Originally Posted by chchyong89 View Post

I sent my layout for fabrication. Try paying attention this thread, maybe someone will run a group buy
Hi chchyong89,thank you for replied.I will looking for a group buy.
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Old 9th March 2012, 06:38 PM   #103
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Quote:
Originally Posted by arche13 View Post
Originally Posted by arche13
f5 turbo version 50w 8 ohm, what case hifi2000 4u 400mm heavy is enough? Or which version of case in silicon ray?
Thank you jacco
5U 500mm.
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Old 10th March 2012, 10:40 PM   #104
arche13 is offline arche13  France
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AudioSan

Thank you
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Old 20th March 2012, 08:42 PM   #105
BigE is offline BigE  Canada
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Anyone finished a V3 yet?
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Old 20th March 2012, 09:33 PM   #106
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May someone help me finding out what is going wrong with the following simulation?

The models I used are:
2sk170:
+Beta=59.86m Rs=4.151 Rd=4.151 Lambda=1.923m
+Vto=-.5024 Cgd=20p Pb=.4746 Fc=.5
+Cgs=25.48p Is=8.477p
+Kf=111.3E-18 Af=1

2sj74:
+Beta=92.12m Rs=7.748 Rd=7.748 Lambda=4.464m
+Vto=-.5428 Cgd=85.67p Pb=.3905 Fc=.5
+Cgs=78.27p Is=12.98p
+Kf=26.64E-18 Af=1

Thanks in advance
Attached Images
File Type: png f5t.PNG (141.0 KB, 1172 views)

Last edited by Daniel(Del); 20th March 2012 at 09:34 PM. Reason: attachment
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Old 21st March 2012, 01:13 AM   #107
lhquam is offline lhquam  United States
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Quote:
Originally Posted by Daniel(Del) View Post
May someone help me finding out what is going wrong with the following simulation?
...
Thanks in advance
My first guess is that the potentiometers with Key=B and Key=D are improperly adjusted. Perform the adjustment steps outlined in the F5 Manual: http://www.firstwatt.com/pdf/prod_f5_man.pdf
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Old 21st March 2012, 02:27 AM   #108
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Quote:
Originally Posted by Daniel(Del) View Post
May someone help me finding out what is going wrong with the following simulation?

The models I used are:
2sk170:
+Beta=59.86m Rs=4.151 Rd=4.151 Lambda=1.923m
+Vto=-.5024 Cgd=20p Pb=.4746 Fc=.5
+Cgs=25.48p Is=8.477p
+Kf=111.3E-18 Af=1

2sj74:
+Beta=92.12m Rs=7.748 Rd=7.748 Lambda=4.464m
+Vto=-.5428 Cgd=85.67p Pb=.3905 Fc=.5
+Cgs=78.27p Is=12.98p
+Kf=26.64E-18 Af=1

Thanks in advance
Daniel,
Check the orientation of Q5 it may be installed inverted.(I have the same problem)
Best Regards
Jim
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Old 21st March 2012, 02:42 AM   #109
lhquam is offline lhquam  United States
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Location: Olalla, Oregon: Land of the 100 Valleys
Quote:
Originally Posted by hotrodmaniac View Post
Daniel,
Check the orientation of Q5 it may be installed inverted.(I have the same problem)
Best Regards
Jim
Yup, you spotted the real problem.
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Old 21st March 2012, 02:44 AM   #110
popilin is offline popilin  Argentina
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Hi Jim
What joy to see you here !!!
Very clever, many of us do not look closely at schematics.
Best regards
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