That would be rms. You guys are getting closer, but there
are some subtleties you've missed, and the circuit will not
work properly as shown.
are some subtleties you've missed, and the circuit will not
work properly as shown.
Nelson may speak in terms of peak in passing, but always rates his 'official' output in RMS.
D1 won't last very long connected directly to a +17V node. The Gate of Q7 will be biased into full-on conduction. Unfortunate consequences will ensue.
This may or may not be what Nelson was referring to...
Grey
D1 won't last very long connected directly to a +17V node. The Gate of Q7 will be biased into full-on conduction. Unfortunate consequences will ensue.
This may or may not be what Nelson was referring to...
Grey
You are enjoying some subtletis too much . . .
Bat man . . . ! ! !
When the Q-point voltage goes up,
how I could turn the bottom ccs off . . . ?
Damn it . . .
Regards
jH
jh6you said:
There's no such thing as too much enjoyment of subtlety.
When the common mode DC value at the output goes positive,
you want to increase the current on the bottom ccs.
jh6you said:
I hate to disappoint you, but it will be unstable. Go ahead
and build it, and by the time you discover this, I will have
published the circuit and it will be a quick fix.
😎
Blues,
Yep. Last night I saw the 17V labels as referring to the point where the 4.7V Zener attached--today I have a few more seconds and see that they refer to the speaker out. I was thinking that the Zener was faced directly with the 17V (i.e. not biased through the two 36k resistors). Yes, it would register 4.7V...but not for long, as it would draw a lot of current and frazzle in short order. With the resistors, however, it should be safe. My mistake.
Man, I hate ambiguous labels. One of the simulators I used to use was persistent in putting one label on top of another if two parts were adjacent. I was never sure which part the label was referring to. I eventually gave up on simulators entirely. After all...everybody knows that if the simulations say an Aleph-X doesn't work that they're right and reality is wrong. Right?
Grey
P.S.: Am I the only one who's confused about all the marriages and divorces and ex-wives/husbands and such?
Yep. Last night I saw the 17V labels as referring to the point where the 4.7V Zener attached--today I have a few more seconds and see that they refer to the speaker out. I was thinking that the Zener was faced directly with the 17V (i.e. not biased through the two 36k resistors). Yes, it would register 4.7V...but not for long, as it would draw a lot of current and frazzle in short order. With the resistors, however, it should be safe. My mistake.
Man, I hate ambiguous labels. One of the simulators I used to use was persistent in putting one label on top of another if two parts were adjacent. I was never sure which part the label was referring to. I eventually gave up on simulators entirely. After all...everybody knows that if the simulations say an Aleph-X doesn't work that they're right and reality is wrong. Right?
Grey
P.S.: Am I the only one who's confused about all the marriages and divorces and ex-wives/husbands and such?
I hate to be disappointed . . .
Today your 😎 looks like . . . !!
I will try to discover all possibilities . . .
At the end, I might have to use ropes
to anchor them to the ground . . .
Building is on-going little by little . . .
I will go with p2p . . .
I need the quick fix, at high probability . . .
Regards
jH
Attachments
I need beer and long sleep . . .
I hope no thunder tonight . . .
www.firstwatt.com closed and locked the door . . . ? ? ?
Regards
jH
Attachments
I suggest you take a look at SOZ Transconductance thread,
where GL has posted a schematic which is converging on the
actual design. There are still some value and component
placement differences.
where GL has posted a schematic which is converging on the
actual design. There are still some value and component
placement differences.
Me: “When the Q-point voltage goes up,
how I could turn the bottom ccs off . . . ?”
Nelson: “When the common mode DC value at the output goes positive, you want to increase the current on the bottom ccs.”
Confused . . . confused . . . confused . . . X-confused . . .
Give me a sugar . . . I would stop crying . . .
Okay, okay . . .
I will increase the current on the bottom ccs
and at the same time turn it off.
I went to the GL threat and his schematic. Helpful very much . . .
And, my resistor values not final either . . .
Regards
jH
Attachments
Thinking about the drains' V . . .
Thinking about the bottom ccs . . .
Thinking about the Nelson's hint . . .
Drilling holes . . .
All at the same time . . .
And, made too many mis-holes . . .
It's ok . . . I will use them as air holes connecting inner space to outer world . . .
Regards
jH
Attachments
You intend to construct the F2 just as fast, JH ?
You'll have NP sweating in the kitchen, no Jordan gonna save him !
Impressive stuff, enjoying your poetry for the last 15 or so.
You'll have NP sweating in the kitchen, no Jordan gonna save him !
Impressive stuff, enjoying your poetry for the last 15 or so.
Current flows through FET's.
Form shifts towards the ideal.
The journey rewards.
Great work jH! Myself, I try to hide my mis-placed holes by making decorative patterns that incorporate them. I then pretend they were intentional. Delusion can be a wonderful tool when employed correctly.😀
Form shifts towards the ideal.
The journey rewards.
Great work jH! Myself, I try to hide my mis-placed holes by making decorative patterns that incorporate them. I then pretend they were intentional. Delusion can be a wonderful tool when employed correctly.😀
jacco,
Nelson sweating in the kitchen? . . . too busy to make food.
Hmm . . . These days I'm a really good husband and father. They are enjoying nice holiday food in Chinese restaurants . . . hopefully not every day . . .
metalman, Thnaks!
This Rev.4 will be the last post of my circuit before Nelson shows us his original F1.
R19||R20 / c5 / R26||R27 are for stability of drain voltages . . .
I estimate that 220uF is big enough to be the by-pass.
Nelson, could I apply Aleph current sources instead of the upper constant current sources?
Regards
jH
Nelson sweating in the kitchen? . . . too busy to make food.
Hmm . . . These days I'm a really good husband and father. They are enjoying nice holiday food in Chinese restaurants . . . hopefully not every day . . .
metalman, Thnaks!
This Rev.4 will be the last post of my circuit before Nelson shows us his original F1.
R19||R20 / c5 / R26||R27 are for stability of drain voltages . . .
I estimate that 220uF is big enough to be the by-pass.
Nelson, could I apply Aleph current sources instead of the upper constant current sources?
Regards
jH
Attachments
Yes . . .
Thanks about the resistors, indeed . . .
Today your 😎 looks very cute . . . 🙂
I change mind . . .
One more schematic, Rev.4.1 . . .
I will have Aleph curent sources . . .
Further discussion will refer to this Rev.4.1 or post #100 . . .
It resembles my X-Zen V2 . . .
Which I like very much . . .
Would like to give a first name to this F1 . . .
Aleph F1 . . . ?
Of course, the family name is Pass . . .
Best Regards
jH
Thanks about the resistors, indeed . . .
Today your 😎 looks very cute . . . 🙂
I change mind . . .
One more schematic, Rev.4.1 . . .
I will have Aleph curent sources . . .
Further discussion will refer to this Rev.4.1 or post #100 . . .
It resembles my X-Zen V2 . . .
Which I like very much . . .
Would like to give a first name to this F1 . . .
Aleph F1 . . . ?
Of course, the family name is Pass . . .
Best Regards
jH
Attachments
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