>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 almighty 
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 ... 

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