Heya!
I'm trying to build a small project that takes 4 line level inputs from PC soundcards and outputs to one of 4 outputs (2 sets of PC speakers, line in to a hifi amp or a pair of headphones).
I tried the basic switching of audio using CMOS chips with a 4066 which works well, now I want to be able to buffer it so that 1 source could drive any amounts of outputs needed without causing any loading issues. However I don't know whether the opamps should be setup as amplifiers or just as voltage followers.
I drew out this circuit, its pretty big and complex because it contains some power supply circuitry and the muxing. I also don't know if I need any input resistors or anything so the sources 'see' a load?
If you can have a look for me and tell me that'd be great and I can work on a new drawing.
Thanks,
Brian
I'm trying to build a small project that takes 4 line level inputs from PC soundcards and outputs to one of 4 outputs (2 sets of PC speakers, line in to a hifi amp or a pair of headphones).
I tried the basic switching of audio using CMOS chips with a 4066 which works well, now I want to be able to buffer it so that 1 source could drive any amounts of outputs needed without causing any loading issues. However I don't know whether the opamps should be setup as amplifiers or just as voltage followers.
I drew out this circuit, its pretty big and complex because it contains some power supply circuitry and the muxing. I also don't know if I need any input resistors or anything so the sources 'see' a load?
If you can have a look for me and tell me that'd be great and I can work on a new drawing.
Thanks,
Brian