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Old 15th December 2012, 09:24 AM   #8111
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The first Ra went into pieces shortly before he reached Barbados, the second one made it.
Well, we have time and the Paradise. Is there anything more a real man needs ?
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Old 15th December 2012, 09:28 AM   #8112
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I still think a folded cascode will work. Had some talk with AS about CCSs and drifting.
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Old 15th December 2012, 09:32 AM   #8113
RCruz is offline RCruz  Switzerland
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Last edited by RCruz; 15th December 2012 at 09:39 AM.
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Old 15th December 2012, 11:19 AM   #8114
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This was the first MC preamp where is have seen a folded cascode :ATS MC Preamp
For my taste the value of the feedback resistor os too high for lowest noise but nevertheless very innovative in 1986.
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Old 15th December 2012, 11:55 AM   #8115
pdul is offline pdul  Denmark
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Julefrokost i aften... Jeg skal ha snaps med Benny....
This english remark, has a strong scent of something i have seen before
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Old 15th December 2012, 12:38 PM   #8116
MiiB is offline MiiB  Denmark
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As has has a bitter brain than I do... Think it's Like cracking The code... once you see it you understand...
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Old 15th December 2012, 03:22 PM   #8117
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Originally Posted by MiiB View Post
Julefrokost i aften... Jeg skal ha snaps med Benny....
Frikadel and a beer ?
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Old 16th December 2012, 10:54 AM   #8118
MiiB is offline MiiB  Denmark
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Now where is that skihop
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Old 17th December 2012, 11:48 AM   #8119
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This comes close :http://www2.engr.arizona.edu/~brew/e...0Amplifier.pdf
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Old 17th December 2012, 03:47 PM   #8120
MiiB is offline MiiB  Denmark
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I agree with Bipolars it's totally different. because there you dont have the current fighting from the self-biasing Jfets.. With bipolars you can balance the circuit.

Its also possible to use the same current source to mirror in the top and down driving currents.. just have to use different scaling resistors. A servo could then be injected there to compensate for thermal drift.
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