:P

Can I have a diy kit for this?

What about one for this?

Oh, I see Andy has solved $1M question of making quality SMPS for audio: "A series inductor with appropriate current rating in parallel with a 47 ohm resistor and a capacitor down to ground usually stops a lot of this." Where can I invest in this idea?

@RespawnedFluff The kit would consist of:

1x 4-channel function generator. Or 4x 1-channel function generators that can be synchronized and phase shifted with respect to each-other.

4x power amps. 20V, 2A, 500kHz is not that much as amplifiers come.

@NickAlexeev Funny enough the kit for that 100GHz is something like that: 4x33GHz (IIRC) scopes and some microwave plumbing!

Speaking of TIAS, how much harder can it be to click "run" in a sim after drawing the stuff in?

hi every one,is there any one here with experiences in emwin G-libraries?

According to LTspice the circuit has pretty much unity gain. My feeling though says that the R5, C2 is a simple RC low pass filter and although fed by symetric input voltage, I would expect the output voltage to drop 6dB/oct at about 250Hz.

What am I overlooking here that makes frequency response flat for amplitude?

Made a question on the stack: electronics.stackexchange.com/questions/203341/… as you guys seem to sleep in this morning.

@jippie that question seems to be the result of a thought process, asking for a qute specific things. It must be made up,its a statistical outlier

@PlasmaHH ?

@PlasmaHH Sorry for asking a specific question on the stack.

and for trying to actually understand electronics.

@jippie you should be ashamed. Please ask at least three generic arduino questions that can be answered by three year old groundhogs

@PlasmaHH Might actually have the motivation to start testing ls'ing and such soon...ish

Might also remember to make you a package with goodies :/

Thanks to jippie's question I've discovered another annoying "feature" of LTspice: if you select just a particular subset form a parameter-varied dataset for plotting, LTspice can't/doesn't save that choice in the .plt file. So it's impossible to share the exact same plot source with anyone else... except as screenshot.

where is the step analysis to be found in LTspice @RespawnedFluff?

@jippie That's done by adding .step param. Did you see my answer? For the docs on that linear.com/solutions/1831

@RespawnedFluff I got the PULSE, but I'm not sure I know where to enter the .step

Never mind

@Asmyldof just send any information to the gmail thread, two pairs if eyes (assuming you have two too) are always better. The reason why at work those who write the classes/modules do not write the test cases...

A few days ago an acquaintance asked if I could manage to make their kids spare laptop ready for Christmas like I promised... I couldn't remember... Found out I promised her to do it for Christmas 2014 :/

LOL I found a ridiculous but in MathCad. It can either display complex numbers with some silly small real value like

... or if I select that expression on the right and change the format to "decimal"... then -1j becomes 1j. But it still knows internally that it's a -1j (at least):

s/but/bug of course.

what was this free pcb cad cloud only tool dave tested a while ago?

@PlasmaHH altium something

the free version of altium designer

@jippie got it. circuit maker. navigating through all kinds of advertising was cowfusing

lets try this thing out...

Is capacitor reactance defined in textbooks with a minus like here in Wikipedia? At least st-andrews.ac.uk/~www_pa/Scots_Guide/info/signals/complex/… doesn't define that way... but then it only defines the complex version.

I learned Xc = 1/(2pifC)

It seems like Wikipedia has some weird def books.google.com/books?id=z8GlVgTKiCEC&pg=PA31

and Zc = 1/(jwC) = -j/wC

@RespawnedFluff not allowd to view the page

Or books.google.com/books?id=0yJ3blaI7b8C&pg=PA82

@RespawnedFluff nope

limit set by google books or so

OR books.google.com/books?id=FNJ6Ay0UNRkC&pg=PA218 I think Wikipedia is full of bullshit at this point.

let me dig up my little book of formulas for a definitive answer

@jippie Google hates you really bad.

I can see why some people like to define it negative.

welp, my prototyping parts will start arriving tomorrow \o/ even though the one thing I forgot to order is a breadboard-compatible tactile switch :P

I should stop cleaning my desk by moving everything into a box ...

@RespawnedFluff anyways, I've seen it before, but I believe indeed it was only on wikipedia or so. And everything on wikipedia is true.

in my opinion it helps if you actually understand what you're doing.

@RespawnedFluff Maybe the Arduino-people have started to redefine basic electronics too. In a couple years nobody remembers it used to be different.

All circuit diagrams will finally be distributed in fritzing form.

In this case looking at the talk page of that Wikipedia article it appears it has been a disagreement/controversy for at least a century!!

@RespawnedFluff Just click edit and change it ;o)

Can I charge my batteries from a negative reactance?

Did we finally discover free energy?

@RespawnedFluff I only see the disputed / unbalanced tag when I look at the page source.

Did you change your avatar to a blank one?

aaaaarrrrrrrggggghhhhh

stupid. plastic. non-adjustible. out-of-tolerance. lightbulb. holder!

hot glue? ^^

the blasted center contact on it is set too far back in and making near-nil contact with the bulb...and it can't be adjusted or fixed because it's a metal rivet into a continuous plastic beam across the middle of the holder.

Can a question get any worse? electronics.stackexchange.com/questions/203408

@PlasmaHH not by much...

@jippie Ultimately I did that.

@jippie A long time ago (last December).

would be more fun if it was transparent

The article was really crap despite being "level-4 vital article", FWIW. It actually used the other definition (positive) later in the article without even giving it, basically contradicting itself. Too many cooks...

@PlasmaHH My image editing skills don't exceed using MS Paint, and I don't think it has that option...

I know I could use GIMP or something like that, but I can't be bothered...