Philip Stortz <PICLIST@mitvma.mit.edu> wrote:

> there is only something like 2.5 watts available, hardly enough to
> provide proper warming i would think.

    The intent isn't to heat up a cold cup of coffee or keep it hot
    indefinitely.  The advertisements that I've seen usually include
    a graph showing that the cupwarmer extends the time that your
    coffee remains above a "drinkable" temperature... They usually
    claim about an hour of additional time above 40 degrees C.

    I've got ads for USB-port-powered cupwarmers, cellphone battery
    chargers, fans, lamps, therapeutic heating pads, a talking
    wing-flapping plastic parrot, an electric toothbrush... There's
    a lot you can do with 5V at 500mA, I guess.

    I'm still waiting for the cable that lets you charge your
    laptop's battery from its own USB port.

    -Andy

=== Andrew Warren -- aiw@cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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