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Solid State A/B Switch (audio)
Posted: Thu Nov 20, 2003 6:18 am
by JeffDajos
I'm wondering if anyone knows of a perfectly clean way to build a solid state A/B switch for a car audio system. Currently I'm using relays and a pic to do this job. The relays are big and sometimes cause a slight pop in the speakers when switched. My main concern with the solid state electronics is that there is no change of the audio signal from the head unit.
Re: Solid State A/B Switch (audio)
Posted: Thu Nov 20, 2003 8:12 am
by Externet
Hello Jeff.
In case the A/B switching is done at line level, you can use a 4053 chip.
If done at speaker level, there are solid state relays you may try.
Miguel
Re: Solid State A/B Switch (audio)
Posted: Thu Nov 20, 2003 4:08 pm
by jollyrgr
Try the ANALOG DEVICES analog quad audio switch. The part number is SSM2404. Below is a link to the data sheet in PDF form. This device is meant to switch at the LINE level. But it will switch low amperage audio signals up to +/- 12 volts.<p>
http://www.analog.com/UploadedFiles/Dat ... sm2404.pdf
Re: Solid State A/B Switch (audio)
Posted: Fri Nov 21, 2003 6:49 pm
by Mike
I was just wondering, could that chip be controlled by a standard pushbutton from the pin to either + or - supply?<p>-Mike
Re: Solid State A/B Switch (audio)
Posted: Tue Nov 25, 2003 9:18 am
by JeffDajos
That AD chip looks promising. Thanks for the help. I'll let you know how it works.
Re: Solid State A/B Switch (audio)
Posted: Tue Nov 25, 2003 9:56 am
by Bernius1
4066 or 4016? Check the data sheets. 'Ol reliable.