i was using smps 24v ,1A for that am getting noise how to reduce noise?

 

Maybe the article at the link below will help you to describe your noise problem.

Minimizing Noise Generated by Switched-Mode Power Supplies <= Link to article

 

Hello,

Also in some datasheets there are optional filters given in the example schematics.
Here is one taken from the LM2596 datasheet:



Bertus

 

thank you

Hello,

Also in some datasheets there are optional filters given in the example schematics.
Here is one taken from the LM2596 datasheet:

View attachment 138012

Bertus

i connected dc to dc coverter lm2596 for that also am getting noise.... what to do?
noise is 800mv.
i given input for dc to dc converter from linear regulated power supply then also am getting noise....

 

Hello,

I don't quite understand you.
How are things connected?
Can you post a diagram?

Did you implement the extra filter given?



Bertus

 

Hello,

I don't quite understand you.
How are things connected?
Can you post a diagram?

Did you implement the extra filter given?

View attachment 138016
as u told lm2596 buck regulator like that i have lm2596 dc to dc converter i connected that to the smps output.....
for that also am getting noise...


Bertus

i have lm2596 dc to dc converter i connected that to the output of smps.....
for that also am getting noise.

in this image i connected lm2596 dc to dc converter through power supply..
for that am getting peak to peak voltage 800mv how to reduce it?

 

Hello,

A smps is a switching powersupply that will give you much more noise than a linear powersupply.
If you feed either of them to a DC-DC converter, you will introduce noise again, as a DC-DC converter is most likely a switching powersupply too.

Bertus

 

Hello,

A smps is a switching powersupply that will give you much more noise than a linear powersupply.
If you feed either of them to a DC-DC converter, you will introduce noise again, as a DC-DC converter is most likely a switching powersupply too.

Bertus

thank you

 

Hello,

A smps is a switching powersupply that will give you much more noise than a linear powersupply.
If you feed either of them to a DC-DC converter, you will introduce noise again, as a DC-DC converter is most likely a switching powersupply too.
i was using smps for the given block diagram am getting noise i have to reduce noise..
Bertus

 

Hello,

You have three times an 24 Volts supply in your drawing.



Are those all from the 24 Volts smps?
Is 800 mV disturbing the 24 Volts valve?

Bertus

 

Hello,

You have three times an 24 Volts supply in your drawing.

View attachment 138021

Are those all from the 24 Volts smps?
Is 800 mV disturbing the 24 Volts valve?
Bertus

am using two power supply's linear and smps was using for timer circuit only.