gun-powder
New Member
i use an atx power supply to power up some signal interface crcts for an automotive research before analyzing them on pc through data acquisition card.
i logical thing is that of course the atx power supply have much more better rectification than that made in china 12v dc adapter.
unfortunately that atx power supply sometimes adds a very high noise in the signals i read but when i turned it off and used that cheap adapter it totally disappears.
the most two strange things i see now are that:
-some times this atx power supply dosent show this problem & sometimes it does.
-noise is generated only when the power supply is turned on even if dc power is not plugged in the crcts like if it generates a magnetic field or something.
someone will tell me why didn't you use those cheap adapters if they work well?
i think can't use 8 or more adapters to power my crcts that will make my wiring sucks.
does any one find a reasonable explanation for this problem?
i logical thing is that of course the atx power supply have much more better rectification than that made in china 12v dc adapter.
unfortunately that atx power supply sometimes adds a very high noise in the signals i read but when i turned it off and used that cheap adapter it totally disappears.
the most two strange things i see now are that:
-some times this atx power supply dosent show this problem & sometimes it does.
-noise is generated only when the power supply is turned on even if dc power is not plugged in the crcts like if it generates a magnetic field or something.
someone will tell me why didn't you use those cheap adapters if they work well?
i think can't use 8 or more adapters to power my crcts that will make my wiring sucks.
does any one find a reasonable explanation for this problem?