image
Page 8 of 8 FirstFirst ... 678
Results 71 to 77 of 77

Thread: Sander Style LC Filter - remove lines in your video

  1. #71
    Quote Originally Posted by twentyfoursyc View Post
    I have wired it like this. Video goes directly to Vtx and power comes straight from 3s battery pack.

    Attachment 60467
    I have now bypassed all electronics in the aircraft and wired the camera to the Video tx with nothing in between, still using the choke. The image quality is still extremely bad, but when the choke is removed is normal. I am not sure what move to make next.

  2. #72
    Navigator
    Join Date
    May 2013
    Posts
    207
    Maybe it's worth to try only wrapping the positive wire... More turns should be better.

  3. #73
    N3EVV
    Join Date
    Apr 2014
    Location
    SE Pennsylvania, USA
    Posts
    244
    Quote Originally Posted by twentyfoursyc View Post
    I have now bypassed all electronics in the aircraft and wired the camera to the Video tx with nothing in between, still using the choke. The image quality is still extremely bad, but when the choke is removed is normal. I am not sure what move to make next.
    Try connecting a ground wire from camera to vTX twisted closely with the video wire.

  4. #74
    Navigator
    Join Date
    Mar 2015
    Posts
    28
    I have issue of TS5823 producing almost more noise than the ESCs. With no motors powered I get peak-to-peak of 320mV on my 12V BEC output which is powering the VTX and camera. If I disconnect the VTX the p2p goes down to 30mV.

    So today I put a LC filter with a readymade 1mH ferrite core coil (http://www.vekoy.com/product_info.ph...ucts_id=21047I) and 470uF + 100nF caps to the camera input. So the VTX input is not filtered. I still get p2p values around 90mV at the camera input and see occasional errors in the image. I have used shielded cable for the video signal, twisted the power cables and grounded the video input at VTX.

    Should I add another filter at the BEC output or should I get rid of the TS5823 and change it to Aomway for example?

  5. #75
    If you power a camera directly from a 3S battery or have an OSD overlay and it blinks or flickers, try to isolate the power and signal wires as much as possible.

    - Power: use common mode LC filter, like this one http://ivc.no/Z, to filter both power and ground from battery, BEC or external regulator. But remember to ground the VTX, CAM and OSD to the same ground after the/output of the filter.

    - Signals/com: put 150 Ohm resistors in-line to minimize any current flowing in the wires, this should really already be in place on properly designed electronics. Put them on the TX and RX lines between OSD and APM/NAZE/CC3D, if used.

  6. #76
    Navigator
    Join Date
    Aug 2015
    Posts
    45
    I have an OSDoge connected to my Naze, which I believe has LC filtering. Is it still of any benefit to add this?

  7. #77
    OSDoge has a simpler LC filter which filters the power rail (not ground, like a common mode filter). You can try, if it doesn't fix the problem, try add a common mode LC filter on the power inputs to the OSDoge.

Page 8 of 8 FirstFirst ... 678

Similar Threads

  1. Sander-style (Ez)UHF antennas
    By ssassen in forum DIY
    Replies: 253
    Last Post: 24th January 2016, 01:42 PM
  2. Sander style (dipole) or Thomas Scherrer style antenna for Rx
    By Sp1k3 in forum Video Aerial Systems
    Replies: 6
    Last Post: 9th March 2014, 04:43 PM
  3. Sander style LC Filter disturbs OSD
    By schugabe in forum IFR - Video Link Discussion
    Replies: 6
    Last Post: 19th July 2013, 12:00 PM
  4. TBS sander style antennas
    By dr_patso in forum Team-Black Sheep
    Replies: 14
    Last Post: 18th December 2011, 08:19 AM
  5. Replies: 0
    Last Post: 13th September 2011, 06:52 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
  •