I’ve just assembled a 30-watt, 12VDC-output power supply to power a few home security cameras (two with IR emitters) and a small microphone pre-amp, but I haven’t installed it yet. The heart of the unit is a “Power-One” BLP30 switching p/s with the output wired to a nearby “distribution block”…a small enclosure box with six DC coaxial plug connectors on top, wired in parallel. I mounted a small, low-power “Silenx” cooling fan just above the switcher, powered by the power supply’s own output. As this puts the fan in parallel with the cameras and pre-amp, I’m wondering if the fan’s motor might introduce noise into the system’s output, and especially what effect that might have on the sensitive audio pre-amp. In fact I wonder about the cumulative effect of all of the devices being wired to the same 12-volt source.
Might something along the lines of putting a small ceramic disc capacitor across the terminals of each of the six output connectors help filter at least some noise in the system, should there be any? And, if this is the way to go, I don’t know what capacitance would be appropriate.
Any thoughts?
Thanks
Might something along the lines of putting a small ceramic disc capacitor across the terminals of each of the six output connectors help filter at least some noise in the system, should there be any? And, if this is the way to go, I don’t know what capacitance would be appropriate.
Any thoughts?
Thanks