how to prevent voltage spike?

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testtones

Member - Posts: 2

Joined: July 12, 2006

Location: Canada

Posted: July 12, 2006 at 10:16 PM / IP Logged

I have air suspension in my car there is 8 solonoid controled valves, controled from a switch box that has 1 power feeding all the switches (1 switch per valve). Whenever I hit a switch I get a pop through the speakers in my car. I believe it is caused by a voltage spike. Will a diode fix this? if so how do I wire the diode? Thanks for the help

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geepherder

Platinum - Posts: 3,668

This member consistently provides reliable information

Joined: October 27, 2003

Posted: July 13, 2006 at 6:21 AM / IP Logged

Suppression diodes may work. You want to place a diode across each of the coils, only backwards. Whichever side of the coils recieves 12 volts, that's the side that you connect the stripe side (cathode) of the diode.

My ex once told me I have a perfect face for radio.

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how to prevent voltage spike?

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