SRF05 has 5V supply if I remember right. How do you connect it to 24V power? Schematic would clarify.
No I mean that if I use a pulse power supply 220VA-24VDC via a buck circuit using LM2576 to 5V output then It is noisedSRF05 has 5V supply if I remember right. How do you connect it to 24V power? Schematic would clarify.
For * electrical supply voltage ripple . This noise . Do you have solution for thisHi,
Without a schematic you can´t expect a detailed answer.
So post your schematic, at least a draft.
***
Noise: It could be
* audible noise
* ultrasonic acoustic noise (inaudible)
* electrical (wired) common mode noise
* electrical supply voltage ripple
* and so on.
And every one of the above asks for a different solution.
Thus the ususal way is to analyze the source of noise and it´s behaviour (amplitude, frequency bandwidth...)
Additionally one needs your application´s specicifcations about: voltage, current and frequency range of interest of the node you want to insert the filter.
Besides hardware filter you should consider to use an (additional) software filter.
Klaus
it depends.You must use a linear regulator to prevent noise
I think that module srf05 is using OPAM is sensitive with voltage more than ADC .it depends.
I often use SMPS with quite simple filters (often just capacitors) and still got stable readings on 16 bit ADCs (according datasheet specification).
PCB layout, parts placement, current, andother things play a role...
Klaus
I think that module srf05 is using OPAM is sensitive with voltage more than ADC .
Don’t you have 12v, 5V on your PC PSU or an LDO or anything else?If I replaced by meanwell power then It is work . So with spms normal power how to filter noise from DC output
I tried a IC LM7805 LDO but It still noise from 24V SMPSDon’t you have 12v, 5V on your PC PSU or an LDO or anything else?
I have oscilloscope to catch noise. My issue is if I replace normal SMPS 24V by meanwell 24V then It is work . How to filter noise from normal SMPS 24V ?I would expect without datasheet specs to make your linear supply noise less than the faintest echo signal you want. Some sonar IC’s may have good PS rejection, but don’t count on it.
Also you did not specify if your noise was coherent with DC ripple or AC hum. Why not elaborate instead of keeping us in the dark!
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