FuZZ1L0G1C
- Mar 25, 2014
- 366
- Joined
- Mar 25, 2014
- Messages
- 366
Our TV is quite an old model, an LG Golden-Eye CRT.
This has 2 AV inputs, one doesn't work, so let's say one AV(1) in.
One AV out.
Has RF ANT in / out.
The DSD is AV out, currently to TV's AV1 in.
The DVD/FM uses AV out (for DVD movies).
A VCR can use AV in/out or RF in/out.
The PVR is AV in/out.
The security camera is monochrome (BW) AV out, to PVR AV in, only when needed.
Currently, its a bit of a mission to dive behind the entertainment centre, into the cable jungle, to swap RCA connectors around each time I want to change the configuration.
I've been tossing some ideas around, including mini 3PDT relays, but in some switching configurations, this may short inputs to outputs, or parallel several devices, which is obviously not good.
Using logic gates/IC's, I simulated switching in Profilab Expert, and it seems that logic could work.
BUT, instead of relays, I would rather go for 3-line buffers and or switching triacs / transistors.
What device parameters would I need?
I'm thinking that maybe a minimum of 8MHz, allowing for composite video's color-burst?
Or more, to allow a margin for harmonics / rolloff?
As max V is only about 2V p-p, I guess Imax is low, probably a few mA?
As I plan to record OR playback with VCR and PVR, I am still playing around with best logic tables / configs.
As I've never used 'Arudino' or similar (Stamp), would one of these do a better job of controlling switching and direction?
An electronic component store nearby (RS) sells various micro-controller boards, so plan to shop for one.
This has 2 AV inputs, one doesn't work, so let's say one AV(1) in.
One AV out.
Has RF ANT in / out.
The DSD is AV out, currently to TV's AV1 in.
The DVD/FM uses AV out (for DVD movies).
A VCR can use AV in/out or RF in/out.
The PVR is AV in/out.
The security camera is monochrome (BW) AV out, to PVR AV in, only when needed.
Currently, its a bit of a mission to dive behind the entertainment centre, into the cable jungle, to swap RCA connectors around each time I want to change the configuration.
I've been tossing some ideas around, including mini 3PDT relays, but in some switching configurations, this may short inputs to outputs, or parallel several devices, which is obviously not good.
Using logic gates/IC's, I simulated switching in Profilab Expert, and it seems that logic could work.
BUT, instead of relays, I would rather go for 3-line buffers and or switching triacs / transistors.
What device parameters would I need?
I'm thinking that maybe a minimum of 8MHz, allowing for composite video's color-burst?
Or more, to allow a margin for harmonics / rolloff?
As max V is only about 2V p-p, I guess Imax is low, probably a few mA?
As I plan to record OR playback with VCR and PVR, I am still playing around with best logic tables / configs.
As I've never used 'Arudino' or similar (Stamp), would one of these do a better job of controlling switching and direction?
An electronic component store nearby (RS) sells various micro-controller boards, so plan to shop for one.