Author Topic: Suggestions for Fundamental Friday  (Read 13741 times)

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Offline EEVblog

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Re: Suggestions for Fundamental Friday
« Reply #25 on: June 28, 2013, 10:30:52 am »
I would like to see Dave do a video about why anyone ever needs 5 or 6 digit accuracy for a multimeter.

I was going to do something very simple along those lines, although for "resolution", not so much the accuracy part.
It won't be a FF video, just a real quick simple video. Yep, could do this one in a few minutes.
Ok, maybe 5 minutes...
 

Offline casper.bang

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Re: Suggestions for Fundamental Friday
« Reply #26 on: June 28, 2013, 10:47:56 am »
Love FF stuff, especially as presented by Dave with theory followed by a breadboard setup - great for a rainy day while on vacation. ;)

How about the topic of hysteresis? I noticed it came up in Dave's latest multi-meter review, and I would not have known what it was, if I had not just been playing with ADC and battling the problem of "fast switching between two close states".

Switch latching/de-bouncing could be another fundamental topic. There's a software aspect to these problems, so may be a little harder to cover, though unavoidable when BOM reduction is a concern.
 

Offline Mr Smiley

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Re: Suggestions for Fundamental Friday
« Reply #27 on: June 28, 2013, 03:15:59 pm »
Hi,

What do almost all newbies and seasoned designers hide from.  :wtf:

Impedance matching using transformers, or for that fact, impedance matching full stop  :scared:

a X:1 transformer wound on a toroid, explaining what the load sees and what the source sees.

Simple,easy to do, easy to demonstrate, but very frightening for a lot of people

 :-+

There is enough on this planet to sustain mans needs. There will never be enough on this planet to sustain mans greed.
 

duskglow

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Re: Suggestions for Fundamental Friday
« Reply #28 on: June 30, 2013, 12:41:55 am »
uC clocking, crystals, load capacitors and such would be an awesome tutorial.

I second this.  I'm trying to figure out what the best way to hook a crystal to an AVR is.
 

Offline jonwilhelmjr

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Re: Suggestions for Fundamental Friday
« Reply #29 on: July 26, 2013, 06:10:17 am »
I would not mind seeing a video about filters for example RC filters. How many are they? Maybe Dave can do a series like he did with the charge pump and voltage double videos.
 

Offline rakesh

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Re: Suggestions for Fundamental Friday
« Reply #30 on: August 28, 2013, 11:09:41 am »
feedback loop stability? its not really as fundamental, but a topic not many of us understand, and very important in most circuits...

e.g. pole and zero compensation, bandwidth limiting, etc,.

+1   :-+

+20  :-+


+1 :-+
 

Offline ddavidebor

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Suggestions for Fundamental Friday
« Reply #31 on: August 28, 2013, 11:18:38 am »
I would not mind seeing a video about filters for example RC filters. How many are they? Maybe Dave can do a series like he did with the charge pump and voltage double videos.

Boooooring!

Davide Bortolami,
Fermium LTD
 

Offline kizzap

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Re: Suggestions for Fundamental Friday
« Reply #32 on: August 28, 2013, 11:40:45 am »
Boooooring!

and so is your negativity.

-kizzap
<MatCat> The thing with aircraft is murphy loves to hang out with them
<Baljem> hey, you're the one who apparently pronounces FPGA 'fuhpugger'
 

Offline Excavatoree

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Re: Suggestions for Fundamental Friday
« Reply #33 on: August 29, 2013, 02:40:57 pm »
I know a "datasheet" video has been proposed before, and I know Dave has shown some datasheets on previous videos and explained how to use one to understand a component, but I was thinking of a slightly differing idea.

It may be helpful to do a series of videos on some basic components:  Diodes, transistors,  basic op amps,etc.  Show the data sheet, explain the important specs, and maybe give an example of why one can or can not substitute component A for component B, and why or why not.  (some cases are circuit dependent.)
 

Offline Rerouter

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Re: Suggestions for Fundamental Friday
« Reply #34 on: August 29, 2013, 08:27:49 pm »
while i see that as a good topic Excavatoree, each of those components would really be worth there own video, there is a lot of things even at a fundamental level about a resistor for instance, temperature coefficients, noise, capacitance, winding patterns, materials, wattage, drift, breakdown voltage, etc,
 

Offline Excavatoree

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Re: Suggestions for Fundamental Friday
« Reply #35 on: August 29, 2013, 08:42:25 pm »
while i see that as a good topic Excavatoree, each of those components would really be worth there own video, there is a lot of things even at a fundamental level about a resistor for instance, temperature coefficients, noise, capacitance, winding patterns, materials, wattage, drift, breakdown voltage, etc,

That's what I meant.  Maybe one a month or so.  "Fundamentals Friday - Resistors." for example, discussing the aspects you mentioned.
 

Online Kjelt

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Re: Suggestions for Fundamental Friday
« Reply #36 on: September 07, 2013, 01:52:38 pm »
Maybe designing and choosing the right components (which have their quirks), for instance like a standard ceramic X7R vs NPO SMD capacitor, capacitance derating (Voltage and Temperature Coefficient, last year this got even the pros at our company in trouble.
 

Offline helge

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Re: Suggestions for Fundamental Friday
« Reply #37 on: September 20, 2013, 09:40:49 am »
Clock/frequency generation, especially PLL-based!
Be it in FPGAs, Microcontrollers or even in that bloody 74HC4046- based tesla coil you built over the weekend - we cannot hide from it. I'm currently digging into this subject for a project that implements a serializer with fine adjustable bitrate. PLL clock synthesis in particular is a whole world in itself. After Dave has tackled FPGA basics and JTAG in some videos I am confident he won't crumple in the face of sigma-delta fractional-N synthesis ;-)

Here's some stuff to get started:


http://www.skyworksinc.com/uploads/documents/101463b.pdf
http://www.ece.ucsb.edu/Faculty/rodwell/Classes/ece218b/notes/MTT_2004_meninger_IntNFracN.pdf
 

Offline george graves

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Re: Suggestions for Fundamental Friday
« Reply #38 on: October 12, 2013, 06:26:20 am »
uC clocking, crystals, load capacitors and such would be an awesome tutorial.

+1

Offline TMM

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Re: Suggestions for Fundamental Friday
« Reply #39 on: October 17, 2013, 03:36:54 am »
I know it has been covered before (in one of the Agilent multimeter teardowns, i think?) but perhaps a more comprehensive tutorial of integrating ADCs.
 

Offline helge

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Re: Suggestions for Fundamental Friday
« Reply #40 on: October 17, 2013, 10:56:25 am »
I know it has been covered before (in one of the Agilent multimeter teardowns, i think?) but perhaps a more comprehensive tutorial of integrating ADCs.

Let me start by adding a helpful piece of information:
http://www.latticesemi.com/~/media/Documents/ApplicationNotes/AnalogLayoutandGroundingTechniques.ashx?document_id=1116
 

Offline ShaunAndFRED

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Re: Suggestions for Fundamental Friday
« Reply #41 on: October 27, 2013, 08:02:24 pm »
I think one that would be great for FF is isolation. Why certain systems are isolated vs not, maybe even get into creepage distance and pcb slotting.
 

Offline awallin

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Re: Suggestions for Fundamental Friday
« Reply #42 on: November 04, 2013, 09:22:49 pm »
I think one that would be great for FF is isolation. Why certain systems are isolated vs not, maybe even get into creepage distance and pcb slotting.

I suggest: "how not to kill yourself with a variac"
 

Offline con-f-use

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Re: Suggestions for Fundamental Friday
« Reply #43 on: November 05, 2013, 01:18:13 pm »
Wasn't aware this thread exisited. Howto not kill yourself with a variac is kind of similar to what I'd like to see, a general tutorial on mains safety with focus on equipping your lab for mains safety.

General vicinity:
Isolation Transformars
RCD
Variacs
Mains Filters
UPSs
Emergency Shutdown Switches
Fuses
???
 

Offline codeboy2k

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Re: Suggestions for Fundamental Friday
« Reply #44 on: November 06, 2013, 01:04:20 am »
Wasn't aware this thread exisited. Howto not kill yourself with a variac is kind of similar to what I'd like to see, a general tutorial on mains safety with focus on equipping your lab for mains safety.

General vicinity:
Isolation Transformars
RCD
Variacs
Mains Filters
UPSs
Emergency Shutdown Switches
Fuses

+1 voted up
 

Offline Syko_

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Re: Suggestions for Fundamental Friday
« Reply #45 on: November 13, 2013, 12:34:35 pm »
Just throwing this in there, for what-the-heck-ness.

Hysteresis losses and Eddy current losses?
 


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