Solid State A/B Switch (audio)

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JeffDajos
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Solid State A/B Switch (audio)

Post by JeffDajos » Thu Nov 20, 2003 6:18 am

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.
Jeff

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Externet
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Re: Solid State A/B Switch (audio)

Post by Externet » Thu Nov 20, 2003 8:12 am

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
- Abolish the deciBel ! -

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jollyrgr
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Re: Solid State A/B Switch (audio)

Post by jollyrgr » Thu Nov 20, 2003 4:08 pm

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
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Mike
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Re: Solid State A/B Switch (audio)

Post by Mike » Fri Nov 21, 2003 6:49 pm

I was just wondering, could that chip be controlled by a standard pushbutton from the pin to either + or - supply?<p>-Mike

JeffDajos
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Re: Solid State A/B Switch (audio)

Post by JeffDajos » Tue Nov 25, 2003 9:18 am

That AD chip looks promising. Thanks for the help. I'll let you know how it works.
Jeff

Bernius1
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Re: Solid State A/B Switch (audio)

Post by Bernius1 » Tue Nov 25, 2003 9:56 am

4066 or 4016? Check the data sheets. 'Ol reliable.
Can't we end all posts with a comical quip?

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