Re: relays

On Thu, 13 Nov 2008 19:22:07 -0800, John Larkin
<jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

On Thu, 13 Nov 2008 17:40:30 -0800, "Joel Koltner"
<zapwireDASHgroups@xxxxxxxxx> wrote:

Hey John,

"John Larkin" <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:qblph4lch7ca5kl0q8e3qt8hogfc8rs6k6@xxxxxxxxxx
Play with words, or numbers, all you like. I have been careful to
specify "power gain."

Using your definitions, a mechanical valve can have power gain, yes? That'd
be an awfully early form of a gain element.

Its power gain is infinite, because once you turn the valve, the water
flows forever. It's a power integrator, not an amplifier.

---
No, it's an amplifier.

If you turn it a little, a little water will come out, but if you turn
it a lot, a lot of water will come out.

In either case you have to use power to turn it on and off, so it
doesn't have infinite gain.

JF
.

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