So, the electrons intuitively know that they are high or low energy electrons and choose the appropriate path based on this knowledge?
What happens if you attenuate the entire signal? In your hypothesis?
You mean increase the resistance of the bypass resister? I suspect it would overwhelm the ceramic device for what it needs to do. That's just a guess. This is of course backwards conceptualizing from what we know it contains. For all I know Mr. Bybee learned how to make it from trial and error and without any grand conceptualizing whatsoever.
No, I mean what happens if you (say) HALF the level of the input signal including all its components - signal, noise, extraneous hash etc. In your hypothesis, how does the artificial lowering of the entire signal affect what the QP does?
What happens if you only HALF the true signal ie noise etc are unaffected? At what point does the QP consider the signal to be noise and the noise signal?
I think it would operate on an "absolute" difference between the lowest level signal that can be separated from the grass level noise. This wouldn't change with the level of the signal. Any noise that exists above that signal level it seems to me would get through along with the signal. It would be like hiss - once its on the recording its there if its above a certain level. I'm not good at quantifying that mathematically though. If the noise arises in a circuit after the attenuator then of course your signal will go down relative to the remaining noise even if the QP stops the grass level noise. If most of the noise arises before the attenuator then the noise and signal will go down together. And then the QP will stop the margin of noise at the grass level. This is guessing. Its a dirty job but somebodys got to do it.
figured. So, the QP can't differentiate noise from signal. Anything below an absolute level is "noise" (even if its a lightly played flute section behind the brass) while anything above the absolute level is signal, even if its GSM cellphone hash.
Good mind experiment though - thanks for the thoughts and input.
btw my math sucks too. I'm in awe of people who can do differential calculus.
End of game.
Good mind experiment though - thanks for the thoughts and input.
btw my math sucks too. I'm in awe of people who can do differential calculus.
End of game.
I think you might be over extending my simplified explanation. I think low level signals are pulled out of the weeds, so to speak. But that doesn't mean that sometimes the weeds are just too high and you pull some of the weeds along with the signal. It ain't quite as bad as you are implying. But like everything, there's a limit to all good things, including this.
Cheers Sy.
From what I've read, including one revue where JB was present, the origional design of this device was to reduce the noise in power systems for subs, and especially for the sonar, as this was in the 70's I would surmise that most of the noise was at a lower frequency than today with SMPS.
So we have a conductive shield wrapped around a much lower value resistor (wire wound), if there is any effect I still would suspect it is inductive in nature and frequency dependant, how thought I am still trying to guess, unless the ceramic material has some magnetic material within it.
From what I've read, including one revue where JB was present, the origional design of this device was to reduce the noise in power systems for subs, and especially for the sonar, as this was in the 70's I would surmise that most of the noise was at a lower frequency than today with SMPS.
So we have a conductive shield wrapped around a much lower value resistor (wire wound), if there is any effect I still would suspect it is inductive in nature and frequency dependant, how thought I am still trying to guess, unless the ceramic material has some magnetic material within it.
Maybe it is used as a triboelectric retarder. Causing the electrons in that higher resistance path to fill all of the available orbits. Can't imagine why this would separate noise from signal, unless you think about signal in an information packet sense. Then random charged electrons might be more susceptible to getting lost in the resistor, as opposed to the signal packet remaining coherent and utilizing the "filled" zone controlled by the PVC triboelectric effect.
Rockwell Automation Retroincabulator
(for RodeoDave)
This short video is horribly off topic, but then again maybe not...
Rockwell Automation Retroincabulator
Yeah, I know...
(for RodeoDave)
This short video is horribly off topic, but then again maybe not...
Rockwell Automation Retroincabulator
Yeah, I know...
You did not overdo it, it was well stated and received..Hi John,
Huh?
Always remember that we have varying levels of experience among our members. Like any manual, some things require repetition. Personally, I didn't think I overdid that. You got the message.
If we limit bw to 20K, then just toss an 8 ohm resistor in series with the line cord.. The test is just for coupling, so many amps will work just fine pushing 8 watts up to 100 Khz or so. Heck, even a chip amp may work there.
I'd run the current into the leads further out. Then you could use the sense contacts at a known distance as you suggested. How many of us can position these contacts to a distance known to the width of a razor blade? Copper bar contacts might be a better plan though, otherwise you'll want to null any contact potential out or keep the temperature constant across the jig. See, now you're the one getting fussy about everything!
fussy is good...
As I said, put the blades 3/8 from the body of the resistor/device, and clip the current leads outboard of those.
It is not important to know the distance to "within the width of a razor blade". The blades sole purpose is to force a contact in a known, repeatable location. If one epoxied the blade flats to opposite faces of a known dimension insulating block, the contact distances would be the block dimension plus one blade thickness. Measurement via calipers would provide accuracy to 2 or 3 thousanths, which should suffice even for copper clad steel leads.
Cheers, John
If the ceramic material has, say, 3 ohms and is paralleled with a .025 BE resistor that is a factor of 120 larger resistance of the ceramic to the resistor. The resistor is then allowing almost all the signal to go through.
We should do a lab test of a whole QP side by side with the just the inner resistor of another QP. Reduce the a signal from the signal generator until you get way, way down there. In theory, if what Mr. Bybee claims is true, the signal in the whole QP should just disappear at the output at a certain level. On just the resistor it should just get smaller and smaller until the measuring equipment cannot go any farther. He seems to be claiming, and I'm not disputing it, that it acts like a bi-directional diode operating at an infinitesimal voltage drop.
We should do a lab test of a whole QP side by side with the just the inner resistor of another QP. Reduce the a signal from the signal generator until you get way, way down there. In theory, if what Mr. Bybee claims is true, the signal in the whole QP should just disappear at the output at a certain level. On just the resistor it should just get smaller and smaller until the measuring equipment cannot go any farther. He seems to be claiming, and I'm not disputing it, that it acts like a bi-directional diode operating at an infinitesimal voltage drop.
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