Post by thread:[EE]: Re: distributing video signal

Hi Tal Try these http://www.elantec.com/pages/pdf/d42009.pdf http://www.geocities.com/IECMaster/circuits1/cir_rfv030.html Dave > when distributing one video signal to more then one amplifier using hi-freq > Operational Amplifier, do I need to distribute as well the inputs for all > opamps or just connect them all together? -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email spam_OUTlistservTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body

if you look at the page that Dave Mumert sent at: http://www.geocities.com/IECMaster/circuits1/cir_rfv030.html My question refer to the input of the opamp, if I connect many opamps to one source with so many resistors on the input, shouldn't it effect the source signal power? maybe I'll need to amplify the initial signal source? so each opamp get it's "standard" signal power. hope that everybody understand what i write. Regards Tal Bejerano AMC - ISRAEL {Original Message removed}

> My question refer to the input of the opamp, if I connect many > opamps to one source with so many resistors on the input, > shouldn't it effect the source signal power? maybe I'll need to > amplify the initial signal source? so each opamp get it's > "standard" signal power The terminating resistance is the 75R, and that would be the major load on the input signal. The signal from the junction of the 4k7 and 2k5 level control should be able to be taken to a few more op amps. However, the CA3100 does not have a particularly high input impedance (and is also obsolete unfortunately, but there are others around - the Philips NE592 is an 8-pin cheapie) and you should be able to compensate for that with other amplification stages The circuit you refer to has already split the signal 3 ways, could you not just repeat it for further fan out ? Degradation will probably become apparent the more removed the output becomes from the input though -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu

Jinx CA3100 isn't a must. I can use others. so no problem about the outputs, I want to distribute to 20 or so TV monitors and I was under the assumption that this component can deliver only to 3 outputs. if I can make it deliver more than 3 outputs it's better for me. Regards Tal Bejerano AMC - ISRAEL {Original Message removed}

> if I can make it deliver more than 3 outputs it's better for me. I've had a look through some of Maxim's ICs. This page here http://www.maxim-ic.com/1st_pages/DI135.htm has ICs with 4 and 6 outputs. Using a combination of buffers and splitters you should be able to do what you want quite simply without degrading the signal Start here http://www.maxim-ic.com/ through http://dbserv.maxim-ic.com/appnotes10.cfm/ac_pk/26 through http://dbserv.maxim-ic.com/appnotes10.cfm?filter=category for other video / product information -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestKILLspammitvma.mit.edu

10x Jinx Regards Tal Bejerano AMC - ISRAEL -----Original Message----- From: pic microcontroller discussion list [.....PICLISTKILLspam.....MITVMA.MIT.EDU]On Behalf Of Jinx Sent: Monday, June 10, 2002 1:01 PM To: EraseMEPICLISTspam_OUTTakeThisOuTMITVMA.MIT.EDU Subject: Re: [EE]: Re: distributing video signal > if I can make it deliver more than 3 outputs it's better for me. I've had a look through some of Maxim's ICs. This page here http://www.maxim-ic.com/1st_pages/DI135.htm has ICs with 4 and 6 outputs. Using a combination of buffers and splitters you should be able to do what you want quite simply without degrading the signal Start here http://www.maxim-ic.com/ through http://dbserv.maxim-ic.com/appnotes10.cfm/ac_pk/26 through http://dbserv.maxim-ic.com/appnotes10.cfm?filter=category for other video / product information -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestspam_OUTmitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList @spam@piclist-unsubscribe-requestKILLspammitvma.mit.edu