UPS on DC controlled tables?


Has any one tried putting in a small computer UPS to feed the DC supply on a turntable? This probably? wouldn't be so great ahead of a AC synchronous motor because the "sine" wave out of most computer UPS's is a bit squashed or triangled - but if for instance the output of your external supply is 27VDC - the purity of the sine output isn't too important ?
Ag insider logo xs@2xstonedeaf

Showing 3 responses by sidssp

Why do you want to put a UPS which generates dirty electricity, to feed your
turntable? What do you expect to gain from it?
TT using DC motor already has DC voltage regulator built-in, that is how you
adjust the speed of DC motor. There is absolutely no benefit to put a UPS in
front of it. In fact, the dirty electricity generated by UPS will pollute the rest of
your system. If your TT doesn't have a regulated power supply for the DC motor,
you will be better off to use the UPS money to upgrade the TT. UPS, in my
opinion, is the wrong solution to a most likely non-existing problem.
I doubt it, Avliviero. DC regulator for motor control is very easy to do and
inexpensive. The technology has been perfected for quite some time. There is
no reason for manufacturer to put in subpar regulator. Unless you have a cheap
TT and your AC line is extremely unstable, I don't think it will make any audible
difference. Besides, if your AC line is so unstable that it will affect TT, I think it
will have a more profound impact to the rest of your system. In order words, if
you have AC line problem, I would address it for the rest of the system before
putting a power plant just for TT.