[sdiy] "State of Electronics" Australian Electronics Design andManufacture

[Needham, Alan]

| 
| > Most of the kids graduating from those programs can't
| 
| Could that be because teachers are afraid to tell them the mnemonic
they
| used ?
| http://www.vnnforum.com/showthread.php?t=124209
| 
| Cheers,
| Colin f

I went to bed as a boy reciting the colour code, trying to add a few
more colours each night. I think it took a week or two to nail the list.
Many years later I was told this very rhyme and used the colour code to
check that the rhyme worked! (another frame of reference).

We have a final-year instrument apprentice (that's control systems, not
music) at my workplace who was asking me recently why his circuit didn't
work (a 741 on stripboard, fixed input voltage, variable feedback to
alter the output voltage); he is unable to do basic fault-finding. I
spotted a couple of tracks he hasn't cut and asked how he came up with
this circuit, he said that the 'lecturer' gave them the diagram because
it worked last year and the lecturer gets all his course material from
the web (the lad has found complete lessons and homeworks with answers
on various sites).
I asked why is it fixed input and variable feedback and he asked if it
could be done any other way!
I asked what the properties of an ideal op-amp might be and he was
clueless.

Maybe it's just as well that low-level fault-finding now means swapping
boards :-(

	Sad but true - Alan


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