E
Eeyore
John said:Write a '0' by reverse biasing the cap for a while to erode away the
oxide.
A while is likely to be days.
Readout is by measuring capacitance.
Measuring leakage current would be more sensible.
Graham
John said:Write a '0' by reverse biasing the cap for a while to erode away the
oxide.
Readout is by measuring capacitance.
Jamie said:I often use pre drilled etched uni-boards for testing small basic
circuits.
Guy said:I remember when a breadboard was literally that, a wooden board
normally used to roll out bread, with the circuit being tested
laid out on it point-to-point.
I have used the white boards, and still have a couple around
for limited situations where the deficiencies don't matter.
For many years I would prototype with wire wrap (slit-N-wrap
is very good if you follow the instructions, unreliable if
you don't), but nowdays I do a simulation, lay out a board
with CAD, and send out for a fast-turnaround small-quantity
run of PWB's. The old methods just aren't practical in
todays's engineering environment.
Lately I have been working with 200A+ designs, which calls
for a completely different style of prototyping...
Michael said:You better be careful at that power level, or you
might be 'Macon Bacon'. ;-)
Guy said:<grin>
I have a nice thick polycarbonate sheet that I put
between myself and the power transistors...
Would you believe that not a single person in Junior
High School ever thought of calling me that? No?![]()
A while is likely to be days.
If it means so much to you , you can do it yourself.
I personally don't feel the need to
perform an experiment, the outcome of which is predictable and obvious.
---
See?
---
Of course you *know* I'm right. If you thought I wasn't you would perform the experiment to
prove me wrong. Since you're not doing that, it's clear you're just mouthing off for the
sake of it.
Let me see.
11.6 days IS a bit more than one week. It's also less than 2 weeks. Problem ?
Likewise. I'm way too familiar with the 'right answer' to need to have to examine
something in detail that he's only bringing up as a stupid troll.
Why do you say (winding) resistance doesn't enter into it ? It's very significant with
typical line frequency transfomers !
In detail, I have absolutely no doubt.
Some ppl love to 'show off' with their calculations.
I don't see the point where the answer's so obvious.
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Depends on the area of the "bit", dumb ass, the composition of the
electrolyte, and the reverse current.
Do the math...
Since electrolytic rectifiers work fine at 60 Hz, it seems that one
can oxidize or strip an AlO2 layer in milliseconds.
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If you understood it perfectly and it's at odds with reality, which
you also seem to think you understand perfectly, then it should be a
trivial matter for you to spot and report where I went wrong.
I don't see that happening any time soon, even though I think there
was a small error in my work which I'm still examining.
I'd tell you what it was, but that would be cheating.
dumb ass, the composition of the electrolyte, and the reverse current.
Do the math...
I didnt study his analysis in any detail - because I really dont care; I
seldom if ever use mains transformers, and never for any power level
above a few watts, making anything but the crudest analyses unnecessary
when operating a cap/bridge from mains, resistance doesnt really enter
into it, but inductance sure does.
Barton has a seriously detailed exposition of the humble
rectifier-capacitor filter (one chapter worth), if you do it properly
its surprisingly complex.
John said:Since electrolytic rectifiers work fine at 60 Hz, it seems that one
can oxidize or strip an AlO2 layer in milliseconds.
Jamie said:That's was made just before the flux capacitor-
John,
I missed this analysis; where did you post it? In this group? Can you
give me a Google link to it?