On Wed, 2 Oct 2002, John Carmack wrote:
> ...At normal voltage, the fast KZCO valves go from full open to full
> close in 0.8 seconds. If you run it at 24 volts, it drops to 0.5 seconds,
> but probably isn't good for the motor...
It's not uncommon to give such things a pulse at a higher voltage to move
them quickly, and then drop back to a lower voltage for holding. The main
issue for higher voltages (and hence currents) is just heating, and if you
do it briefly -- how briefly depends on the thermal mass of the coils and
vicinity -- that doesn't have time to get bad.
Henry Spencer
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