Voltage spike

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Hickmanae3

Copper - Posts: 67

Joined: April 08, 2005

Posted: January 08, 2006 at 11:16 AM / IP Logged

I have 4 tv monitors in my car that is hook up to a 20 amp relay (recieves power when the car is on, and no power when the car is off). All four monitors although is pulling 6 amps of current..

When i turn the car on, i get a voltage spike on the monitors, so i gotten 2 3amp rectifer diodes. Will hooking two diodes up in parallel acrosss a relay stop the voltage spike by equaling the additional proerpty of 6 or do i need to do something else.

This is the exact way the relay is set up, where exactly would I place the diode

No security system can beat the tow truck :(

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: January 08, 2006 at 6:29 PM / IP Logged

Just like in this picture. Across 85 and 86.

Voltage spike - Last Post -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

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Hickmanae3

Copper - Posts: 67

Joined: April 08, 2005

Posted: January 08, 2006 at 6:41 PM / IP Logged

But can I wire two 3 amp diodes in parallel seris to make an additional property of 6 ampson the relay.

No security system can beat the tow truck :(

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: January 08, 2006 at 7:03 PM / IP Logged

You are not using the Diode as a fuse.

The coil of the Relay is less than 1 amp.

The load of the coil is protected from spiking a voltage to the whole thing.

One diode is all you need for protection.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: January 08, 2006 at 7:07 PM / IP Logged

Voltage spike - Last Post -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

Hickmanae3

Copper - Posts: 67

Joined: April 08, 2005

Posted: January 10, 2006 at 11:13 PM / IP Logged

noo, its not working, I connected the 3ampdiode exactly how you posted it and im still getting that voltage spike on the screen when i start the car

No security system can beat the tow truck :(

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Voltage spike

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