VFD Help Sought

[wildcat]

Originally Posted by kimoyo Could the combo breakout board be having issues with the RF coming from the VFD?

Almost certainly... before the shielding the relays would really chatter.

[LUCKY13]

Wow, is there any chance of causing someone close to you problems from this. Like I live next door to a Fire Station. Probably no where close to being that strong but just making sure.


Jess

[JRaef]

No, not likely. EM field strength decreases at the square of the distance from the source, so by the time you are 2 feet away it is 1/4 the strength, 10 feet and it is 1/100th the strength. it would need to be one BIG farking drive to cause problems with a neighbor. If you do have a big drive (i.e.200+HP), you may cause problems on the power line that feeds you both, but that becomes a bigger problem for the utility. When you go to get a permit to install that, they usually will ask for a harmonics study first.

[Al_The_Man]

Originally Posted by LUCKY13 Wow, is there any chance of causing someone close to you problems from this. Like I live next door to a Fire Station. Probably no where close to being that strong but just making sure. Jess

Make a note of turn-out times when you have the machine running, if T.O's. double, you may be triggering an alarm
Al.

[LUCKY13]

Originally Posted by Al_The_Man Make a note of turn-out times when you have the machine running, if T.O's. double, you may be triggering an alarm Al.

LOL, I guess it is possible. My first thought was where they use FM radio equipment. We had a guy across the street running some "way to big radio equipment" and he was causing problems at the Fire Station. Which made me wander if I was to run a VFD if it was strong enough to cause such a thing. Sounds like it all can be shielded to eliminate any problems so in the end should be doable. I had run radio equipment in the past myself but I always went to them & worked with them to be sure no problems came out of it. I never had any problems that we had to fix either but it always pays to know what your working with. Then as ole Barney would say you can "Nip it in The Bud" before it becomes a problem.


Jess