1. Home
  2. Electronics Design
  3. Crapacitors
  4. Page 3

Crapacitors

--- Being a professional circuit designer and having posted a cornucopian abundance of _free_ electrical and electromechanical designs which performed perfectly according to the requirements and feedback of various querents, I say both of your name-calling rebukes are unfounded and vindictive.

---

--- Whoop-dee-doo...

---

--- Well, since you didn't initially pick up on that this thread was originally about ceramic capacitor capacitance tolerances varying widely for different dielectrics with varying DC voltages being impressed across them, my expectations are that, since you've tried to twist it to your own ends, anything more subtle than the original premise would seem to be lost on you, since you consider your agenda to be paramount.

---

--- That's only true, for you, as long as you think you're the force majeure.

When it's been pointed out that you aren't, and that you've made an error, you'll go to any lengths to try to rescind the comment.

I've found errors in textbooks and references which I've posted here, but, instead of congratulations, you issue insults.

Why is that?

---

--- Maybe...

My

-- JF

Reply to
John Fields
Loading thread data ...

 
formatting link

on

(*)(e.g.http://www.yageo.com/documents/recent/UPY-GPHC_Y5V_6.3V-to-50V_5. pdf)

That's right. I remember testing some C0G/NPO capacitors with a hellish voltage degradation about 35 years ago. Like 30-35% reduction at 400 V(dc) bias. The tempco had to be less than 30 PPM across seven temperatures at 0 V(dc) bias, and not much looser with 400 V(dc) bias.

I screwed up a batch of testing, and was given a serious discussion about data integrity.

?-)

Reply to
josephkk

formatting link

No. JL. You intentionally overgeneralized it from MLCC capacitor voltage coefficient in order to post something, however irrelevant. Raging Narccissist.

?-/

Reply to
josephkk

the

oscillator.

reason

other

e.g.https://groups.google.com/group/sci.electronics.design/msg/1257d50b73 ...

probably

formatting link

Wow, but the half frequency output is soo poor. I think i can do better. If i can figure it properly the ouput waveform will be much better and i won't need a VCVS to "hide" an required amplifier to get it to be barely usable.

?-)

Reply to
josephkk

e.g.https://groups.google.com/group/sci.electronics.design/msg/1257d50b73...

I didn't hide the amp: it's in plain sight. It just let me probe the input and output on the same scale and see both. And I never claimed that it was usable!

As I said, I only did that to show that it could be done. I'd expect a voltage gain from input frequency to f/2 to be closer to 1 than 0.001, with a juicy nonlinear cap and some tweaking.

Does anybody have an LT Spice script that includes the sort of grossly nonlinear cap that we've been discussing here?

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

It would be a hell of a discussion group if nobody posted anything.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

Please do. That would be interesting.

Jeroen Belleman

Reply to
Jeroen Belleman 

--
And that justifies your posting nonsense just to keep yourself in the 
limelight?
Reply to
John Fields

What's nonsense about using a capacitor's nonlinearity to build a parametric frequency divider? A few people here seem to have liked it. This thread started with capacitor nonlinearity.

Where is your promised high-frequency Variac study? Can you actually do anything but whine?

--

John Larkin         Highland Technology, Inc 

jlarkin at highlandtechnology dot com 
http://www.highlandtechnology.com 

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom laser drivers and controllers 
Photonics and fiberoptic TTL data links 
VME thermocouple, LVDT, synchro   acquisition and simulation
Reply to
John Larkin

--- Sexist, yes???

Why am I not surprised?

Because a diminutive creature like you, who's always been surrounded by, and criticized by women must, of course, liken his present-day critics to his early-on detractors.

---

component behavior.

--- Geez, over the years I've addressed all of those kinds of problems and have come up with answers which satisfied the querents.

Just check my posting history for veracity...

---

--- So, I've done no real electronics and less crabby is better for you?

Sounds like what you're saying is: "Get out of my face.", since you don't want to admit to ever having made an error WRT circuit design.

---

--- Maybe...

My shop kitty, Monty, insists on petting intervals to break up the day.

-- JF

Reply to
John Fields

 
formatting link

If it were me, i won't use a solid tant at more than 1/2 rated V.

?-)

Reply to
josephkk

Why are you talking about tantalum caps in a thread about ceramic caps?

You intentionally overgeneralized it from MLCC capacitor voltage coefficient in order to post something, however irrelevant. Raging Narccissist.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin 

--
So, if a thread drifts because of your input that's OK, but if it 
drifts because of anyone else's, that's not OK?
Reply to
John Fields 

--
No one said anything about the _nonlinearity_ of the capacitance 
change, the point was being made that the capacitance change was large 
and unexpected. 
---    

>A few people here seem to have liked it.
Reply to
John Fields
[...]

John.

FFS.

Have you really got nothing better to do than obsessively scan every single word of Larkins posts until you find some creative way to misinterpret it?

--

John Devereux
Reply to
John Devereux

pdf

Yeah, that's my normal margin. But someone wanted more voltage drive. (The amp has a plug in the back for DC power.)

George H.

Reply to
George Herold

m

Sorry my fault.... a bit of thread drift. (It's all about me after all isn't it? :^)

George H.

.highlandtechnology.com  jlarkin at highlandtechnology dot com

Reply to
George Herold

Freaking moron. Non-constant c with change in V *IS* capacitance nonlinearity.

It means that Q C * V

It causes harmonic distortion in filters and coupling circuits.

It makes parametric amps and oscillators possible.

It will make RC timers nonlinear.

You're not crossing me, you're being stupid about electronics.

You won't post the Variac data because you wouldn't know what to measure.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

George did it!

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

Tants across power rails are big hazards.

--

John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    

Precision electronic instrumentation 
Picosecond-resolution Digital Delay and Pulse generators 
Custom timing and laser controllers 
Photonics and fiberoptic TTL data links 
VME  analog, thermocouple, LVDT, synchro, tachometer 
Multichannel arbitrary waveform generators
Reply to
John Larkin

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.