terabit 0 Report post Posted December 4, 2008 Hi, Please can you help me with some Video splitter (video distribution amplifier) ? I need connect video camera and video googles with video receiver(one imput and two outputs) . Have you some circuit for this purpose? Thanks Miroslav Quote Share this post Link to post Share on other sites
Terry 5 Report post Posted December 4, 2008 Is this what you are looking for ? http://www.nghobbies.com/cart/index.php?ma...products_id=168 or maybe one of the units you can get for in car video would be better for you ? Terry Quote Share this post Link to post Share on other sites
terabit 0 Report post Posted December 4, 2008 Yes something like a this. But i mean some what can i self made. If somone have experience with self made circuit . Thanks Miroslav Quote Share this post Link to post Share on other sites
Kilrah 2 Report post Posted December 4, 2008 I had made one - but you're better going with a ready unit as one of the chips I used plus postage would cost nearly more without the PCB and accessory components. Quote Share this post Link to post Share on other sites
terabit 0 Report post Posted December 4, 2008 I had made one - but you're better going with a ready unit as one of the chips I used plus postage would cost nearly more without the PCB and accessory components. Can you send me the diagram ? Which chip do you use ? Thanks. Quote Share this post Link to post Share on other sites
W3FJW-Ron 0 Report post Posted December 5, 2008 (edited) What bandwidth does the video signal require and is it set at any particular frequency? Edited December 5, 2008 by W3FJW-Ron Quote Share this post Link to post Share on other sites
terabit 0 Report post Posted December 5, 2008 It is only for composite video PAL signal , bandwidth is not more than 6MHz. Quote Share this post Link to post Share on other sites
Kilrah 2 Report post Posted December 5, 2008 I used a MAX4222, and made a board that was easy to power either by 5V or 7-12V, and had RCA plugs but still could be cut to a much smaller size for use onboard using solder pads instead of plugs. There's a jumper to select between 2 2-way buffers or 1 4-way one. http://i18.photobucket.com/albums/b105/Kilrah/buffer.jpg http://i18.photobucket.com/albums/b105/Kil...uffer_board.jpg Note that I skipped the video AC coupling caps on the inputs and outputs, knowing that all my video equipment had those on their side, so I could save a bit of space for when used onboard. It's not the case with all video equipment, so to do things correctly you'd add those. I only made 2 and have now cut them to the "onboard" size, and use commercial units with a nice metal case for my ground equipment. One of them was used in a broadcast setup once Quote Share this post Link to post Share on other sites
terabit 0 Report post Posted December 5, 2008 Thank you Kilrah This is what I looking for. Quote Share this post Link to post Share on other sites
W3FJW-Ron 0 Report post Posted December 5, 2008 It is only for composite video PAL signal , bandwidth is not more than 6MHz. Yeah.. Of course. Too many late nights with a tired brain for me... Quote Share this post Link to post Share on other sites
n3m1s1s 0 Report post Posted April 14, 2009 being a total newb can someone please explain to me what would be wrong with just using a 2 to 1 phono splitter cable please? Quote Share this post Link to post Share on other sites
Terry 5 Report post Posted April 14, 2009 The video signal would be connected to 2 75 ohm inputs which is 37.5 ohm. The will pull the video signal lower than it should be giving a dark picture. It can also give other problems depending on the equipment used. Terry Quote Share this post Link to post Share on other sites