Re: [Mjpeg-users] Lost frames and signal stabilizers...
Steven M. Schultz wrote: > On Mon, 12 Mar 2007, Andrea Giuliano wrote: > > > Leaves the frequency the same. A stepdown transformer would convert > 240V 50Hz AC to 120V 50Hz AC. The power adaptor that came with the > CT2 should be able to go from that to 7.5V DC Okay, but here comes another problem: AC in USA has 60Hz frequency, in Italy the frequency is 50Hz. So the stepdown transformer would give the right voltage (120V), but the wrong frequency (50Hz), and the adapter shipped with the CT2 could have problems: on it I read "120V/60Hz", no reference to another frequency is reported. I'm afraid that I just would waste money and time to accomplish the same result, if the problem actually is teh frequency. I don't know if I made the point clear, sorry for my poor english. Best regards. > > Steven Schultz > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Mjpeg-users mailing list > Mjpeg-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mjpeg-users -- Andrea - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Lost frames and signal stabilizers...
stefan wrote: > Hi, > > Andrea Giuliano schrieb: >> Could it really be this the cause of the problem? It seems questionable >> to me, because the adapter actually produces a 7.5 volt direct current. >> Indeed, it could do that not very well, the current may be not so >> "direct" as CT2 requires, I don't know. >> > This will most likely be the problem. It is not easy to get a well > stabilized and filtered DC out of AC. Grounding may be a problem, too. > > A good AC -> DC converter with stabilized and AC-free voltage-output > easily can cost about 40-50(!) €. Anything below will be suspicious to > make problems with video-equipment... > 40 euro is about half the money I spent for the CT2, shipping included, so I would avoid buying the converter too, if I could. Also, as I answered to Stephen Shultz, I'm afraid that, if the actual problem is frequency, a converter that output 120V at 50Hz is not the solution, because the adapter from Sima requires 60Hz, not 50Hz. Many thanks anyway. > Before you buy some high-cost converter, you can try with a battery-pack > of 7.5 V. But _please_ check the voltage before use, as batteries can > have some higher output, when new. > > cu > Stefan > > PS: You may otherwise go to a ham-radio-OM near you and dare asking if > he/she will build you such a converter. These people usually know how to > make real stable currents... (And usually they have a full measuring > "park" of instruments to check you device -- vy 73 & tnx :) > > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Mjpeg-users mailing list > Mjpeg-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mjpeg-users -- Andrea - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Lost frames and signal stabilizers...
On Wed, 14 Mar 2007, Andrea Giuliano wrote: > Okay, but here comes another problem: AC in USA has 60Hz frequency, in > Italy the frequency is 50Hz. So the stepdown transformer would give the > right voltage (120V), but the wrong frequency (50Hz), and the adapter > shipped with the CT2 could have problems: on it I read "120V/60Hz", no I think it will work fine. The only other things to try are either a higher quality 7.5V DC conversion unit OR a similar video stabilizer manufactured in Europe (they are made - perhaps someone living in Europe can post an example or two). > I don't know if I made the point clear, sorry for my poor english. Your english is fine. Electronics just does not happen to be your area of expertise ;) Cheers, Steven Schultz - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Lost frames and signal stabilizers...
Steven M. Schultz wrote: > On Wed, 14 Mar 2007, Andrea Giuliano wrote: > >> Okay, but here comes another problem: AC in USA has 60Hz frequency, in >> Italy the frequency is 50Hz. So the stepdown transformer would give the >> right voltage (120V), but the wrong frequency (50Hz), and the adapter >> shipped with the CT2 could have problems: on it I read "120V/60Hz", no > > I think it will work fine. The only other things to try are > either a higher quality 7.5V DC conversion unit OR a similar video > stabilizer manufactured in Europe (they are made - perhaps someone > living in Europe can post an example or two). It would be very nice, I hope someone will! > >> I don't know if I made the point clear, sorry for my poor english. > > Your english is fine. Electronics just does not happen to be your > area of expertise ;) Actually, it's not... Best regards. > > Cheers, > Steven Schultz > > > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ___ > Mjpeg-users mailing list > Mjpeg-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mjpeg-users -- Andrea - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
