Reducing noise by using a capacitor.

[KnotsAboutWood]

Hi,

I'm attempting to wire up a Z zero plate and after some discussion on the forum,

http://www.cnczone.com/forums/diy-cn...ml#post1100345

It appears that I'm getting to much noise on the pin that I'm using. It was suggested that I use a capacitor to reduce the noise, but I'm not sure how to wire it up, I'm hoping someone on the forum has had this issue, and can help.

Thanks for the help,

[fizzissist]

Since no one else is jumping in here....
I'm guessing you need a band-pass filter, a simple RC circuit.

[farmertom]

Hi,

I'm attempting to wire up a Z zero plate and after some discussion on the forum,

http://www.cnczone.com/forums/diy-cn...ml#post1100345

It appears that I'm getting to much noise on the pin that I'm using. It was suggested that I use a capacitor to reduce the noise, but I'm not sure how to wire it up, I'm hoping someone on the forum has had this issue, and can help.

Thanks for the help,

Hi,
I just fixed my noise problem on the Z zero auto tool set. My problem was that i was mounting my fixed tool setting height fixture on an aluminum table. I isolated the plate from the table and that fixed the probe LED flickering problem. Maybe this will help

[TechGuy5002]

I assume your "zero Plate" device has three terminals (Gnd, Vin and SigOut)? If so put the cap acrosss the gnd and input. This will reduce some noise entering from the power supply.

[brtech]

He found and fixed his problem, but the cap is best placed as close to the input as possible, so at the BoB, not at the plate. Usually, for this kind of problem just a capacitor is all you need, but a series resistor may be needed in serious cases. You could also use a ferrite bead for some kinds of noise.