I am creating a device that will allow me to switch between several RCA composite video inputs into one output of the same type. With each input there is the signal and the ground. Can I just connect the grounds of the signals together and run that one to the output along with the signal from the switch (fig. 1) or do I need separate switches for the ground and the signal?
Figure 1
Code:
INPUTS
┌-G S--o
|
├-G S--o__ OUTPUT
| \--o-----S
├-G S--o ┌G
| |
├-G S--o |
└-----------------┘
Each 'G S' pair is an input signal (ground and signal)
The array of o's are the switch contacts
Please excuse the crude diagram, I do not have access to any circuit graphic producing software at the moment.