[mdlug] 12V Overcurrent/voltage Protection

[Jeff Hanson]

I can almost guarantee the Asus adapter has overcurrent protection.
It's almost impossible to find voltage regulator semiconductor devices
that don't have overcurrent/thermal protection.

The cigarette lighter/accessory socket circuit in any vehicle always has a fuse.

A fuse is only intended to protect the wiring from overload, not the device.

On 4/26/10, Peter Bart <petertheplumber at att.net> wrote:
> Good Morning,
>     I'm getting more and more stuff that has car chargers. The tipping
> point was my new netbook. I figured it had an inline fuse in the
> lighter plug. It does not, and neither do any of the other chargers I
> dug up at home.  I remember these car chargers having a small inline
> fuse, from days gone by. Am I being to paranoid? I'm thinking of
> getting some adapters from Radio Shack; with the fuses in them; and
> putting them on my car chargers. Fuses appropriate for the load of
> course. The specific charger I'm talking about is the Asus brand car
> charger <http://estore.asus.com/shop/item.asp?itemid=4446&catid=734>.
> It has a transformer brick to step up voltage to 13 volts and lots of
> references to supposed internal overcurrent/voltage protection. But
> nothing official. What do the great minds at MDLUG think? I should
> mention that almost every electric appliance in my house is plugged
> into some sort of APC surge arrester/battery backup/voltage regulator.
> My notebook power supplies have the small inline ones strapped right to
> the brick. Any thoughts?
>
> --
> Best Regards,
>
> Peter The Plumber
> Sent from a mobile Internet Tablet
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