fcm4711 Wrote: > Hi all > > I found a way to switch an amplifier on and off without needing to > decode the ir signal. :) Check it out here: > > www(dot)gwendesign(dot)com/slimserver/dev_hard_and_software.htm#ampswitch > > Technical background: The plugin switches between audio and blaster > mode causing the right output of the headphone jack to be either low or > floating. That can be used to drive a transistor which in turn drives a > relay. > > Cheers > Felix
I have a friend who wants this or the equivalent, and I'm "consulting" on the design and construction. The circuit, as shown, is pretty simple, but I think it could be simpler yet, BUT I need more info. If the circuit was designed to drive an IR emitter, then it should also be able to drive an appropriate SSR (solid state relay / optoisolated) since the input to those is an LED too - 1.2V, 8ma. However - I don't know, and can't find any information about what the load limit is for the driver. Would such a load be a problem since it would be on full-time while the squeezebox outputs are on? An IR output is MUCH more intermittent. There would also likely need to be a change in the IRBlaster software to drive a full-time ON state, rather than just enabling the ground-sink. TIA Hugh -- hhoover ------------------------------------------------------------------------ hhoover's Profile: http://forums.slimdevices.com/member.php?userid=2581 View this thread: http://forums.slimdevices.com/showthread.php?t=17974 _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
