Obscure Electronics Topics

[Tim Williams]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

 

[D from BC]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

Doesn't an obscure topic becomes less obscure when people read about
it?

Recently huh?....

Most obscure....

I learned Digikey doesn't have 1206 size center tapped SMD inductors.



D from BC

 

[Robert Baer]

Doesn't an obscure topic becomes less obscure when people read about
it?

Recently huh?....

Most obscure....

I learned Digikey doesn't have 1206 size center tapped SMD inductors.



D from BC

I would *love* to find a source of tapped SMD inductors!
Any suggestions?

 

[Jure Newsgroups]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

that would be dark noise in detectors, without doubt.
albeit Van der Ziel was on the subject target long time ago.

JureZ.

 

[D from BC]

I would *love* to find a source of tapped SMD inductors!
Any suggestions?

I haven't looked very much...but suspect it's a nonexistent animal.
I have to add one more detail...
That would be a tapped SMD chip inductor sharing the same core..
It's like a chip autotransformer.
Not 2 individual inductors in series.


D from BC

 

[Robert Baer]

I haven't looked very much...but suspect it's a nonexistent animal.
I have to add one more detail...
That would be a tapped SMD chip inductor sharing the same core..
It's like a chip autotransformer.
Not 2 individual inductors in series.


D from BC

!Absolutely!

 

[[email protected]]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Photomultiplier non-linearity.

Sloman, A.W. "Comment on 'Computer aided simulation study of
photomultiplier tubes'", IEEE Transactions on Electron Devices, ED-38
679-680 (1991) doesn't even show up on Google Scholar.

I was commenting on a paper by Zaghloul and Ree - professor and
graduate student - who claimed that nothing had been published on the
subject. I cited five papers and an application note, and pointed out
that a couple of the papers I'd cited did include fairly comprehensive
reviews of what literature there is.

The 1978 paper I cited, by Aspnes and Studna, had made the same claim,
but Rev.Sci Instrum refused to publish my comment addressing that
point, amongst others.

I got started on the subject when Lush publishe his paper in 1965, so
I'm falling short on the recently, but I expect to stay way ahead on
obscurity.

 

[Don Lancaster]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

http://www.tinaja.com/glib/resbn63.pdf

--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: [email protected]

Please visit my GURU's LAIR web site at http://www.tinaja.com

 

[Spehro Pefhany]

I haven't looked very much...but suspect it's a nonexistent animal.

You could ignore some pins on this guy:-
http://www.spraguegoodman.com/890/890glsb.html

or equivalent..

I have to add one more detail...
That would be a tapped SMD chip inductor sharing the same core..
It's like a chip autotransformer.
Not 2 individual inductors in series.


D from BC

Best regards,
Spehro Pefhany

 

[Winfield]

!Absolutely!

Right, select as suitable smt transformer. Lots
of good choices. Maybe one from MiniCircuits.

 

[[email protected]]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

You can get gain from a non-tunnel diode.

 

[John Larkin]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

Electrolytic devices, electronic things that use ionic conduction in
liquids. Apart from the obvious, I can think of six or eight more of
various levels of obscurity.

But recently? Double-edge-clocked flops in Xilinx FPGAs, wave digital
filters, running DDS synthesizers backwards, running SRDs in series,
various bizarre aircraft serial busses, mach sensors and airplane
crashes, Legendre filters.

John

 

[John Larkin]

You can get gain from a non-tunnel diode.

Parametric amplifier? That's pretty obscure nowadays. I bet there's a
way to modulate the DC bias on a hf rectifier and get gain that way,
too.

You can get gain from a capacitor, too.

John

 

[Vladimir Vassilevsky]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

I'd rather say I my obscurity was enlightened by the brilliant ideas:

IIR filters with perfectly linear phase, random sampling as long as
Nyquist condition is satisfied at the average, FDLS, thermal noise in
capacitors, compensation of hard nonlinearities in control loops,
3-dimensional FFTs, WI method for sound analysis.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

 

[Vladimir Vassilevsky]

John Larkin wrote:

Parametric amplifier? That's pretty obscure nowadays. I bet there's a
way to modulate the DC bias on a hf rectifier and get gain that way,
too.

Gunn and avalanche effects are available also.

You can get gain from a capacitor, too.

You mean the RC circuit with gain or voltage dependent capacitance?


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

 

[Boris Mohar]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

Not really obscure but interesting nevertheless.

 

[Boris Mohar]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?

Tim

OOPS

http://blog.modernmechanix.com/page/2/


Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca

void _-void-_ in the obvious place

 

[Jim Thompson]

OOPS

http://blog.modernmechanix.com/page/2/


Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca

void _-void-_ in the obvious place

Hey! A house that Slowman can afford ;-)

...Jim Thompson

 

[John Larkin]

John Larkin wrote:



Gunn and avalanche effects are available also.

I wonder if an SRD can produce power gain. Sure seems like it could.
Milliwatts of forward bias could modulate kilowatts of reverse spike.
It's not hard to have the recovered reverse charge be half of the
forward bias charge, but the voltage ratio could be 100:1 or so.

Or the obvious case, a PIN diode RF gate.

But baseband, carrier-free, quasi-linear gain? That escapes me.

You mean the RC circuit with gain or voltage dependent capacitance?

The latter, as a parametric amp with power gain. I've seen people do
kilovolt-level nonlinear transmission lines (shock lines) based on
capacitor nonlinearity too.

John

 

[John Fields]

While sitting on the pot this evening, I idly wondered: what's the most
obscure facet of electronics you've learned recently?