- #1
JaredJames
- 2,818
- 22
I have a power supply which takes 230 VAC input and gives 24 VDC output. I use it to drive some differential pressure sensors (24 VDC supply and 0-10 VDC signal output).
It is stated to have a noise of 80 mV peak to peak. This can equate to a 25 Pa variation in readings
I'm finding with certain instruments they can jump around a fair bit and I suspect the ripple is the cause.
Is it worth me trying to further smooth this in some manner, such as by putting a capacitor parallel to the load? I'm not sure if it will provide any useful reduction in the noise and don't want to tear the device apart without some confidence.
For reference, I also have a low noise supply with 1 mV peak to peak, where the readings stay stable to within 1 Pa. Hence my suspicion that it's due to the noise.
The only alternative is that it's some smoothing done within the software that I'm not aware of on the original device, that I haven't added to my own.
Any help / ideas appreciated.
It is stated to have a noise of 80 mV peak to peak. This can equate to a 25 Pa variation in readings
I'm finding with certain instruments they can jump around a fair bit and I suspect the ripple is the cause.
Is it worth me trying to further smooth this in some manner, such as by putting a capacitor parallel to the load? I'm not sure if it will provide any useful reduction in the noise and don't want to tear the device apart without some confidence.
For reference, I also have a low noise supply with 1 mV peak to peak, where the readings stay stable to within 1 Pa. Hence my suspicion that it's due to the noise.
The only alternative is that it's some smoothing done within the software that I'm not aware of on the original device, that I haven't added to my own.
Any help / ideas appreciated.