Brian Turner

Okay, thanks, I was going to try using a computer UPS for shots where I had to move too much for a cable. I was worried that if something happened that broke the camera motor... well, I wouldn't have too much luck finding a replacement. I believe the motor is supposed to draw 50W of power, according to a label I saw on another.

This is really more of a question of science/physics then anything, but I'm not really sure where else I would ask it. I have this really old Bach-Auricon Cine-Voice 400 (modified version), and while it works well, it's biggest downfall is that it runs on AC power; I have to plug it in. There are various kinds of portable power supplies that would let me power it portably, but I run into an interesting issue. From what little I've been able to find on the subject, these older electric, non crystal-sync motors use something about the principle of electricity to keep in sync. So my question is, would I need to use a power supply that is pure sine in order to keep the camera in sync, or is sync not related to that?