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Re: Are you sure about 10.2V... 1800 73

posted by  someone claiming to be L K Tucker on  Mon Jun 18 08:55 CST 2001 [RELATED]

/// I know why. A starter or other heavy electric motor generates spikes of voltage that can damage electronic circuits. This is, in part why you put a surge protector on your computer. There is transient and spike protection in the brake electronics of late mod Volvos.

It might help to put a surge protector or MOV on the regulated line but that would require a fuse also. MOV's and other protection devices work for the duration of the event (overvoltage or spike). They can dissipate huge currents for the short time period of a spike but would fail in an overvoltage situation. If one fails shorted fire is a possibility. Aircraft protectors have fuses for that purpose. If an aircraft protection circuit blows the device is off line until the fuse is replaced.





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