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how to prevent voltage spike?


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testtones 
Member - Posts: 2
Member spacespace
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 
geepherder 
Platinum - Posts: 3,619
Platinum spaceThis member consistently provides reliable informationspace
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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