I am planning to use three separate 12 volt power supplies in the upper section central support system (CSS) in my B9 Robot. One power supply for the neon and lighting, one for the bubble lifter linear actuator and other smaller motors, and the third for the sound system for his voice and background sounds. The problem is the lack of space in my CSS after I cram everything in there that needs to go in there. I cant put the power supplies in the leg section because I have a mains supply (240 volt) swivel connection (similar to a cordless kettle connection) between the leg section and the bottom of the CSS plate that simply lifts off and disconnects from the supply mounted in the leg section, (no wiring to unplug) This is why I need to have the 12 volt power supplies above the waist. There is also another power supply down there feeding the waist motor and associated motor control gear.
My question is will a single suitably sized 12 volt power supply feeding everything above the waist cause any problems regarding RF noise on the sound system? I'm worried that the neon and motors will cause "buzzing" through the speaker of the voice sound system if all fed by one power supply. unfortunately I know very little about audio systems *blush* Any advise is much appreciated