jh6you said:Okay . . . more flavours . . .
She is picky . . .
Comment . . . ?
jh
toss that mosfet in drawer
for "ref-s" you don't need that current
431-s are good to 100mA
try with smallest bypasses you can
think about speed
or use diametrall approach- batteries
edit:
I just slipped that Ref A is main supply voltage for Zeny.......
in Krazy Refs were for biasing only?
or is it late.......
3:54 at my place............
going to sleep
I'll dream some nice wheezers tonight....................
or even phenolic drivers,who knows
or I'll just sleep......
like any normal-non audiophile creature
Are you got up . . . ? Did you get a good dream . . . ?
Ref A is for the main food supply voltage and current.
IRF620 regulation does a job to protect Zeny from overeating of voltage.
The first watchdog, TL431, controls the amount of Zeny’s food at around 18V.
The second watch dog, again TL431, looks into Zeny’s asss to check out
whether the amount of sh@t is right size and whether the smell is a standard quality . . .
Comment?
jh
Ref A is for the main food supply voltage and current.
IRF620 regulation does a job to protect Zeny from overeating of voltage.
The first watchdog, TL431, controls the amount of Zeny’s food at around 18V.
The second watch dog, again TL431, looks into Zeny’s asss to check out
whether the amount of sh@t is right size and whether the smell is a standard quality . . .
Comment?
jh
Dont count on it... Many experts around here keeps their mouth shut, for some reason! Pretty sad. I guess they doesnt want to get involved in the endless discussions....... or risk a wrong comment!!
My advice is to make it as simple as possible, but no simpler
Where did you hear that before
Some of your supplies seems a bit overboard, to me JH! But then again, I believe in the Zen approach Steen
jh6you said:
1. Put all your circuit in one unit.
Very difficult to get picture with separate circuit files
2. I will give you a comment. I urge other also do this!
We can not let you get away with this,
without finding out where your fatal mistake is.
Just give me a good overview schematic,
some little time and .......
.... I promise to find that detail to baangg you in head with.
Will keep you from posting your homebrew stuff for some weeks.
steenoe-
My advice is to make it as simple as possible, but no simpler
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My advice is to make it as simple as possible, but no simpler
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check this out
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jh6you said:Chef's recommendation . . .. . . Any comment?
jh
Hi,
check please this article : http://www.tnt-audio.com/clinica/regulators_noise1_e.html
Adam
Hi Jacco
I have thought about it, with my concerns:
1. I have no Lovoltech power JFET yet.
2. LU1014D has much higher input capacitances than IRF620, to be a source follower.
3. Zeny is source follower having unity or less voltage gain. So, it would anyway provide lower distortion and wider frequency bandwidth than CS amps.
4. With this cascoded source follower, my target is to get symmetry voltage output as indicated in Nelson's cascode design article.
5. But . . . but, by using IRF620 instead of LU1014D, I will definitely lose the merit of Nelson's "kinda like a Triode." Aaaaahhh . . .
As I already started this prototype with IRF620, I d like to try it to the end and will see . . . If I could get LU1014D . . . who knows . . .
Thanks for your suggestion.
Regards
jh
I have thought about it, with my concerns:
1. I have no Lovoltech power JFET yet.
2. LU1014D has much higher input capacitances than IRF620, to be a source follower.
3. Zeny is source follower having unity or less voltage gain. So, it would anyway provide lower distortion and wider frequency bandwidth than CS amps.
4. With this cascoded source follower, my target is to get symmetry voltage output as indicated in Nelson's cascode design article.
5. But . . . but, by using IRF620 instead of LU1014D, I will definitely lose the merit of Nelson's "kinda like a Triode." Aaaaahhh . . .
As I already started this prototype with IRF620, I d like to try it to the end and will see . . . If I could get LU1014D . . . who knows . . .
Thanks for your suggestion.
Regards
jh
jh6you said:For who has interest, Zeny's noodle is here.
I made this, half sleeping at 01:33 . . .. . .
Probably, one or two mistakes . . . ?
I separated this from PSU . . . You will see why . . . later . . .
jh
my yinyang man-you are ready for tooobz......
stop foolin' around with these SS girlies and look where real fun is...
jh6you,
In your Zeny the voltage at the gate of buffer mosfet is at
9v because of the 100k resistors dividing down the 18V
power supply voltage. But the gate of the current source mosfet
is at 9V, Ref B connection. This gives a 0V drop across the
Vds of current source mosfet. I would think the Vds of the
current source mosfet should be greater than few volts for
proper operation or am I missing something?
Tom
In your Zeny the voltage at the gate of buffer mosfet is at
9v because of the 100k resistors dividing down the 18V
power supply voltage. But the gate of the current source mosfet
is at 9V, Ref B connection. This gives a 0V drop across the
Vds of current source mosfet. I would think the Vds of the
current source mosfet should be greater than few volts for
proper operation or am I missing something?
Tom
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