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OK, the things on the switch look like precision resistors.
The L & N logo on the switch infers that it was made by Leeds and Northrup (or is it Northrop ? can't remember)
L&N were (still are?) manufacturers of high quality measuring instruments, I have one of their resistance bridges stashed away somewhere, brand new and never used!
As for the box, nice paint job, shame about the assembly of the coax sockets!
I think that the guy who did the soldering of those thick copper wires and the earth braid subscribes to the philosophy of " The bigger the blob, the better the job".
So to sum up, you have some switched precision resistors in a box, and at a quick guess it swiches from 0 to 10k Ohm in steps of 1K.
JimB
OK, the things on the switch look like precision resistors.
The L & N logo on the switch infers that it was made by Leeds and Northrup (or is it Northrop ? can't remember)
L&N were (still are?) manufacturers of high quality measuring instruments, I have one of their resistance bridges stashed away somewhere, brand new and never used!
As for the box, nice paint job, shame about the assembly of the coax sockets!
I think that the guy who did the soldering of those thick copper wires and the earth braid subscribes to the philosophy of " The bigger the blob, the better the job".
So to sum up, you have some switched precision resistors in a box, and at a quick guess it swiches from 0 to 10k Ohm in steps of 1K.
JimB
haha, seems so derstorm8, i measured, it adds resistance by 1k steps 0-10k, with very small tolerance, well at least my dmm's (i tested with two) show no change at first digit all the time.
so, overall, got this at 10€, so not bad find? .
edit: i mean derstrom, not derstorm .
aaand here come's my favourite question, what do i do with it? well honestly, i dont know . for now, i dont tear it apart (sounded like dave from eevblog, sort of), i'll think first what i could possibly do with it, and when time is right, box'll find other use, it has already couple places for PCB board, if you look closely you can see them. But, this was again great education, thanks guys .
Don't turn it on, TAKE IT APART!
ok, matt . ''friends till ignore do us part?''
haha, so you too know the eevblog ? but, i follow dave's suggestion, especially when i read ''made in china-or-other-mumbo-jumbo-country'' (no offence, i'm no racist). and what boceomes prototyping, i do it pretty regurally, so you newer know what you'll need when designing ''bomb''...speaking of which, teacher demonstraded the power of 'lytics: he shorted cap-bank IIRC 1.6 farads@320v, quite a bang. the caps were from old UPS, from some factory.
i watched one daves rewief about atten smd-hotair station, and read about dangerous situtation: live was soldered to chassis, safety-earth and live had swapped places, that's why i check chinese stuff, and sometimes even what i use already.....haha, funny thought, my real name is Atte, and brand name atten, means almost attes .
hmm, interesting april fool prank idea ;D my one teacher uses that technique on normal teaching procedure: if measurements are not taken with care, mess tells it all . he just connects cap to mains, and it should be seen from measurements.
I remember someone in high school charing a capacitor such that when the locker handle was jiggled it would make a big bang.
I know what it is. A fezder magnet.
However, I feel it necessary to mention that I have purchased items from Chinese companies that turned out to be very well designed, very well put together. Higher quality than you get in many other places, even. So don't judge a book by its cover--do a little research on the company before making a purchase. That's what I've learned.
I don't usually destroy electronic components on purpose, even for a demonstration. While I've done it before, I generally just let the students make the mistakes themselves. They tend to learn it faster that way, though I imagine it's more fun for them to see me do it
Okay, well I keep saying "my students", but really it's just the students in my lab. I'm an electronics lab assistant at a university, and I often help students when they're having trouble with their lab experiments. Technically they're not "my students", but I still consider them to be since I tend to do a lot of tutoring and other types of assistance.
It's amazing how times have changed....
Seeing we are going here...
Take a Main Smoothing Cap. Charge it to Rated Voltage...
Take it and throw it at the fool trying to make fun of you.....and shout CATCH. The fool will catch it and shock himself nicely.
Lesson learn't.
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