Auto AV Selector 4 input

[thesim]

can anyone give me a hand on building an Auto AV Selector 4 input
like the one featured on www.lik-sang.com?....Oh it doesnt have to be 4 input just 2 at minimum

 

[thesim]

anyone got anything?

 

[arcom]

Hi!

This might help you.
https://www.electronicsforu.com/electronicsforu/lab/
(look under "Add-On Stereo Channel Selector" (number 73)).

 

[thesim]

thats good thanks but i was soughta lookin for somethin more specific?

 

[panic mode]

so why don't you spell it out then?
tell us what is it you are looking for...

 

[thesim]

ok a simple Auto AV Selector 2 input

 

[arcom]

OK, so just connect one more 4066 IC for the video signal.
Then you will have an Auto AV selector for 4 sources. If you really must have 2 sources, then connect C and D inputs to ground and they will be skipped.

 

[thesim]

ok thx for the help thats all i need

 

[Sebi]

Arcom,
the CD4066 can't work properly with video signal (75ohm!)
Many IC-s existiert for this purpose: e.g.:TEA2014 search it on ST website.

 

[arcom]

Thanks Sebi.
I thought that the 4066 was a universal analog switch IC (both for audio and video apps). Now I know something more