Hay
I am facing grounding problems
In my application I am using 3.3vfor micro controller (DGND1), 5V for digital (DGND) & analog circuit (AGND), 12V proportional solenoids (12VGND) & 24V for Solenoids (24VGND)
I am getting these voltage from 5V, 12V, 24V SMPS
My doubt is how to connect all these ground points in the Circuit.
I got some information from the Internet; AGND & DGND can connect with Inductor
Please provide some information regarding the Ground.

Regards
Chandu

 

The power supply has all the voltage grounds made internally - no need to treat them as separate entities.

For suggestions on the analog and digital ground, Google the term "star grounding". Here is one link that is good, even if it confines itself to audio amps - http://www.epanorama.net/documents/groundloop/.

 

Thanks for the reply

In my circuits I made 3.3V, 5V, 12V, 24V ground lines separately
I am planning to connect all separate grounds with main ground using 600 Ohms, 1500mA Ferrite Bead Chips to avoid the back flow current from other circuits. Here I have 5,12,24V power supplys, shall I connect all these Power supply grounds at single point, shall I call it as main ground.

Please provide some information or circuits related to mixed signal grounds.

Regards
Chandu

 

Google is your friend.