image
Results 1 to 8 of 8

Thread: where to use a filter

  1. #1
    Navigator SkinWalk3r's Avatar
    Join Date
    Jul 2012
    Location
    Pontiac, MI, USA
    Posts
    823

    where to use a filter

    after seeing Chicken-sashimis simple filter in his mini-zep I decided to build one on mine as well. The thing is I am going to power my Vtx AND camera off the main batts. So the main leads go to ESC and the balance leads will be used to power the camera(pz0420) and 300 mw vtx. Where do I put the filter ? Just after the balance lead connection before it splits for camera and vtx OR do I give the camera a filter and the vtx another filter ?
    Fpv - it makes my sticker peck up!

  2. #2
    FPV Addict Scotttu's Avatar
    Join Date
    Dec 2011
    Location
    Silverdale, WA, USA
    Posts
    9,997
    Quote Originally Posted by SkinWalk3r View Post
    where to use a filter
    Furnace, your vehicles engine, from the fuel tank to the carb/fuel injection.


    Seriously, I don't know on that, never used a filter....
    "Truly superior pilots are those who use their superior judgment to avoid those situations where they might have to use their superior skills"- Author unknown

    KF7TRX

  3. #3
    Navigator SkinWalk3r's Avatar
    Join Date
    Jul 2012
    Location
    Pontiac, MI, USA
    Posts
    823
    Funny guy
    Fpv - it makes my sticker peck up!

  4. #4
    Pilot ivc's Avatar
    Join Date
    May 2011
    Posts
    263
    You would normally put a LC filter right before the device to minimize any stray EMF or noise to be picked up by any long leads. If you want to supply both the camer and vtx, make sure the filter is close to the VTX (sensitive) and then split off the power for the camera (longer lead, less sensitive).

    You always want to put a filter after any BEC, ESC, servos or switching regulators to separate/attenuate the power supply noise. There's a few diagrams on this page http://beta.ivc.no/lc_power_filter/installation

  5. #5
    FPV Addict Scotttu's Avatar
    Join Date
    Dec 2011
    Location
    Silverdale, WA, USA
    Posts
    9,997
    I'll chime in, as IVC said, but if you DO filter after a power supply and then run naked wire to the VTX or cam - you could pick noise back up - SHIELD that wire after you filter it.....JMHO.
    "Truly superior pilots are those who use their superior judgment to avoid those situations where they might have to use their superior skills"- Author unknown

    KF7TRX

  6. #6
    Pilot
    Join Date
    Jun 2011
    Posts
    1,416
    yup. filter after any non direct battery power source, filter before any components that need it. anything with long wiring that can really pick up noise. low quality servos with long wires are notorious for needing it. VTX's connected in any way with an ESC. GPS's, gopro's. etc.

  7. #7
    Navigator
    Join Date
    Mar 2013
    Posts
    50
    Anyone have a link for a suitable lc filter?

  8. #8
    Navigator SkinWalk3r's Avatar
    Join Date
    Jul 2012
    Location
    Pontiac, MI, USA
    Posts
    823
    Fpv - it makes my sticker peck up!

Similar Threads

  1. Saw filter
    By GhostRider32 in forum ReadyMadeRC
    Replies: 10
    Last Post: 22nd May 2012, 01:09 AM
  2. Is this the IR Filter?
    By Vitamin J in forum IFR - Video Link Discussion
    Replies: 11
    Last Post: 21st November 2011, 11:24 AM
  3. LC Filter
    By paede in forum RC TECH
    Replies: 5
    Last Post: 24th October 2011, 02:01 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •