>
> Hi
>
> 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?
Assuming you have a relatively high input impedence at each input,
(>10k) you could bridge the signal with a 75 ohm resistor to the amplifier
inputs.  Check with a 'scope to ensure you have 1Volt of video at the inputs.

>
> same question for audio amplifiers...
I don't know since audio systems vary (50 vs. 600 Ohm, line level vs
instrument output) but if it were video studio audio, the inputs
are at 600 Ohms so you would need an active distribution amplifier to
seperate the outputs. If the inputs were high Z, you can bridge the
audio with the proper terminating impedence (i.e 600 or 50 Ohms
resistor)

Steve
>
> Regards
>
> Tal Bejerano
> AMC - ISRAEL
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>
>

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body