Alan B. Pearce escreveu:
>> In my junior year EE lab, I still remember one of the experiments,
>> it was a digital circuit using TTL chips. My lab partner (who had
>> pretty close to a 4.0 average) was all upset. He had done the
>> calculations on the current required by all the chips (100 mA total
>> or whatever). The power supply was 5V rated at 3A. He was concerned
>> because the supply would force 3A though the circuit, damaging the
>> chips.
>>
>> True story.
>>     =

>
> Shades of another true story, that I may have told here before.
>
> Graduate fresh from university decides he needs to measure the source =

> impedance of the mains supply, so puts Avo 8 Multimeter on 'Ohms' range, =
and =

> plugs probes into mains socket. Proceeds to wonder why there is an almigh=
ty =

> bang inside his nice new meter, that no longer works, and is a write off.
>
> Told to me by someone who witnessed the event happen ... =

>   =

When I was a teacher in a public technical high-school here in Brazil,
it was common for first year students try to "measure" the current of
the wall outlet with a multimeter.

We had heaps of fused meters stored in a locker.

I think it keeps happening...

Regards,

Isaac

__________________________________________________
Fa=E7a liga=E7=F5es para outros computadores com o novo Yahoo! Messenger =

http://br.beta.messenger.yahoo.com/ =


-- =

http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist