Choke coil?
Thread Starter
Black Pearl
Joined: Oct 2002
Posts: 2,517
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From: Wisconsin
Choke coil?
I'm installing an Alpine deck and the manual shows a choke coil after the fuse but before the radio in the power wire. What is it, what does it do, do I need one, where can I get one if I do?
Thank you!!!
Thank you!!!
Senior Member
Joined: Aug 2003
Posts: 226
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From: McKinney, TX
Traditionally, a choke coil is used as a filter. Being that it's being put in line with the power wire, it's being used as a low pass filter. This would help keep alternator whine from getting in to the radio on the power input to the radio.
You can try it without it, it won't hurt anything, but if you notice alternator whine, you might want to put one in.
You can try it without it, it won't hurt anything, but if you notice alternator whine, you might want to put one in.
Thread Starter
Black Pearl
Joined: Oct 2002
Posts: 2,517
Likes: 0
From: Wisconsin
Originally Posted by kd5dbl
Traditionally, a choke coil is used as a filter. Being that it's being put in line with the power wire, it's being used as a low pass filter. This would help keep alternator whine from getting in to the radio on the power input to the radio.
You can try it without it, it won't hurt anything, but if you notice alternator whine, you might want to put one in.
You can try it without it, it won't hurt anything, but if you notice alternator whine, you might want to put one in.
:thumbup: Cool!! Thanks man!!
Senior Member
Joined: Sep 2002
Posts: 128
Likes: 0
From: New Jersey
Chances are that you have a high power amp like the 9815 or something similar that requires you to get a direct fused battery hookup with a thicker gauge wire.
No big deal get like a 15 uH inductor "choke" coil.
http://www.allelectronics.com/cgi-bi...165&type=store
No big deal get like a 15 uH inductor "choke" coil.
http://www.allelectronics.com/cgi-bi...165&type=store
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