On 2012-10-01, Jon Elson wrote:
Ignoramus6882 wrote:



In this case, I would need to find a user of an old IBM mainframe who
needs a 415 Hz power supply. Which is not something that I hold my
breath for.
No, nobody is running that old gear. The Computer History Museum
might have such a machine, but it is extremely unlikely they would
try to run it, due to the power and air conditioning needs.

But, the aviation shops need modest amounts of 400 Hz power
to test all sorts of gear still in use. Depending on the
size of whatever they are testing, they could need multi-KW
amounts of 400 Hz 3-phase power. Basically, on commercial
and military aircraft, anything that uses over 1 KW runs off the
AC power system, and there's a HELL of a lot of loads in them.

Jon

But they have no use for 415 hz, do they?