Hello friends
I need to remotely switch the audio signal and the power to a pair of speakers.
As Grumpy_Mike suggested I'd use a 4016 in analog mode.
The DS2413 is a 1-wire switch with two channels that can sink 20mA each
I'd like to add also a mechanic relay to switch off the speakers amplifier when not needed to save power.
The relay would be powered through a transistor where one or both channels are high.
Have I wired the transistor correctly? I know that usually base act as a control switch and emitter should connect to ground, however DS2413 sinks, not source. Do I need a PNP transistor for this?
How can I supply -5V for 4016 analog mode? I have only +5V and GND.
Thanks and merry Christmas to everybody!