So how can you accuse people of being about to lose contact with electronics when yuo already have? Not that I find anything wrong with that, I might switch to brewing beer or whatever when I retire, but then I would not say such things here. In fact, I wouldn't even say them right now.
"Not equipped to exploit"? That is what I completely fail to understand.
Hint: LTSpice already makes a schematic that is good enough, so you can flick that switch on the Weller already :-)
-- Regards, Joerg http://www.analogconsultants.com/
The big question in a life is: is your intellect in charge of the direction of your life, or are you ruled by emotions?
It's funny that you pretend to be oh-so-smart, but in fact your intelligence is distorted, literally rendeded useless, by your emotions.
If you were smart, you'd do something about that.
John
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t ,Been there, done that. You have to keep patching that kind of prototype to keep it working, and I want to be able to post a copy of the circuit to my friend in London who has some cute - if cheap - spetral analysis hardware.
-- Bill Sloman, Nijmegen
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Personalities and talents differ from person to person. I'm not going to go out and cold call.
In reality, the LTSpice simulation runs terribly slowly if you include the the comparator to drive the demodulator from the sine-wave output. Bodging the model of the ADG1636 so that it's switch threshold is 0V and hysterisis 10mV lets the simulation run much faster.
There are a few other similar simplifications in the LTSpice circuit, and it doesn't include any of the extra hardware that I'll want to build in to be able to measure the - low - levels of the odd harmonics in the output, like the bridged differentiator tunable notch filter to get rid of the fundamental.
-- Bill Sloman, Nijmegen
Ok, allow me one more question then: Why does your public profile on LinkedIn end at 1969?
If you are seriously interested in working I suggest to fill that out. It can result in them calling you instead of the other way around. Speaking from experience here :-)
Hmm, but you wrote "have yet to get beyond LTspice into gEDA to create a schematic of a circuit that I could build". Most of the bench prototypes I build directly from the LTSpice schematic. I only enter stuff into the real CAD if it is about to become a product or an idea needs to be presented (LTSpice schematics are ugly).
-- Regards, Joerg http://www.analogconsultants.com/
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Id.
I'm on LinkedIn because several of the people I worked with at EMI in
1976-79 are on LinkedIn - they were an unusually good bunch, and I take care to keep in contact. I'm now also linked to a couple of members of my field hockey team, one of my nephews and his mother. I suppose I ought to take it seriously and fill in some more detail, but the last time I tried that they seemed to want money.I'll have another look ..
ngEDA lets me extract detailed parts lists from the schematic, and other good things. IIRR Farnell has got a minimum order value, so it makes sense to buy all the parts in one hit. I know that if I'm careful about the documentation I can buy all the parts at once and not miss anything, and that's the way I like to work if I'm not under time pressure. I'm certainly not under pressure at the moment, though it might be good idea to invent some kind of dead-line ...
-- Bill Sloman, Nijmegen
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"Thinking, Fast and slow" by Daniel Kahneman, ISBN: 978-0-374-27563-1. It's brilliant, if rather worrying.
No more than anybody elses, and probably less than most. I've been aware of Daniel Kahneman's work for some years now, and keep an eye on the distortions in my thinking - this doesn't eliminate them, but makes me think twice before I make decisions. "Rendered useless" strikes me as a gross exaggeration
I do. Probably not as much as I might, but fighting with your sub- conscious has its costs, and it often makes sense to go with a sub- optimal decision that is easier to live with.
-- Bill Sloman, Nijmegen
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So, not so smart.
John
Well the air wiring might be dodgy for that! But there is no reason why you could not prototype something based on sticking stuff down to copper-clad. That should easily survive being posted if well packed, and provided it is built with that goal in mind.
Here is "one I made earlier":
That was done without particular care but I am sure you could do better.
-- John Devereux
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Filling out your work history in the profile is free of charge. A photo also lends a lot of credibility if you feel comfortable with that.
Ummm, since LTSpice is a SPICE program it natively runs based on a netlist so you already have one :-)
Without a deadline projects can get out of hand rather quickly.
-- Regards, Joerg http://www.analogconsultants.com/
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John
I do things like that with an Xacto knife. When the point chips off, I take a few swipes on a sharpening stone, and that forms a triangular tip. I then drag this point backwards across the copper, and it takes a few swipes to cut all the way through the copper, leaving a gap about the width of the blade. It can be a very quick way to isolate regions of copper-clad.
Jon
I use the Dremel drill press and a grout removal bit. With a fence and patience, it makes nice, straight cuts in the copper.
John S
I also got some little bits that look sort of like tubing but the working end is coated with diamond dust. I use them in the drill press to cut circular islands in the copper. Although a bit expensive, they are very fast and easy to use.
John S
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So it is! I've only pushed on to 1971 so far, but I'll get up to date eventually.
There was one on my hard disk. It won't add much to my credibility, but it fills the gap.
I suppose that I shouldn't advertise that I'm white and anglo-saxon, but you are right in saying that a photo engages the reader,and I doubt that I'll be jumping the queue on any tinted non-Europeans, or at least not on anybody under 65.
-- Bill Sloman, Nijmegen
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Don't take it personally. I've already taken Joerg's advice today, which has - unfortunately - exhausted my reservoir of credulity.
-- Bill Sloman, Nijmegen
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And correct it to "... intended for the project ..." :-)
Fill in the rest, that took me less than 15min. The pay-off can be huge.
Au contraire. Skin color, race or origin do not matter. But age and experience can really make a (positive) difference. When someone goes through the effort to slosh through LinkedIn that usually means they are really up the creek with some project and need help, prontissimo. Then they want someone who dunnit before, not some 25 year old Ph.D. who has never wielded a soldering iron in his life.
Age discrimination often only exists in the minds of people. Yeah, some European companies do it. But afterwards projects often get screwed up. And that's where consultants come in 8-D
-- Regards, Joerg http://www.analogconsultants.com/
Oh come on, you have written a grand total of two sentences and uploaded one photo. Why not go all out and complete the profile as best as possible?
This stuff is IMHO seriously worth it and the effort is so small. Cost is zero. What better marketing tool could there be?
-- Regards, Joerg http://www.analogconsultants.com/
You can't exhaust what you don't have, now or past pretense.
Jamie
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Age discrimination is real. I've been discriminated against, during the interview process, several times now (sometimes it's pretty obvious). Sometimes to my favor but usually not. I don't get hung up about it though. The ones I want to work for care more about getting the work done than things like hair color anyway.
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