Posted by Dave on September 21, 1999 at 12:34:14:
In Reply to: About powering parts from a power supply... posted by Joe on September 21, 1999 at 12:10:35:
Your power supply may, and probably does, output more than 200ma. But the interface will only draw what it needs.
: Some questions regarding power supply usage:
: 1. The trackball interface requires +5v at 200ma. Are arcade power supplies "universal" with respect to amps? I wouldn't want to find out mine put out more than 200ma the hard way. (I hate the smell of burning interfaces in the morning.)
: 2. Is it viable to hook up two interfaces to one +5v post, or is it a "one per customer"? In other words, with two attached to one post, will they each get enough power? Will it cause undue stress on the power supply?
: 3. Are there any negative effects (such as burning out the power supply) by running ONLY coin door lights?
: Joe
: : I think Coin doors need 12V power to run the lamp, my bulb is +12V, why don't you just buy a Jamma power supply, you could power all sorts of Arcade parts from that as it is has +5v, -5v and +12v, thats what I am doing, and I will run my serial trackball interface from that..