Karl Lattimer wrote:
After sitting, almost transfixed on my mac's sleep light as it slowly rises
and falls a little college electronics returned to me.
^^ HD LED
|---|>|----+
HD+ o--[ R ]--+ c |-----+
|---|(-----+ |
HD- o--------------------------+
Now I'm pretty sure this is right, off the top of my head, and would relieve
the headache a hard disk light in a freevo can cause.
The only problem is I can't rightly remember the method of determining the
values of R and c (my notes are long gone), I'll keep looking, and update as
necessary and of course post a wiki. The thing is, what would be a good
timing? Should we try and time it so our breathing comes in time with it as
we watch a movie?
Regards
Karl,
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the time constant for a capacitor charging through a resistor is simple
T = RC. T is the time it takes a capacitor discharging through a
ressitor to reach 37% of the suppy it was charged to so in charging this
is to 63% of the supply voltages. To completely charge / discharge it
is 5RC
Chrisa Ellis
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