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Re: [T3] Electric/Mechanical Brake Switch


On 5 Oct 2005 at 22:27, Russ Wolfe wrote:

> Most industrial switches will be rated like for make 16A, but break 4A,
> since industrial load are usually inductive, they have a high inrush,
> and an inductive kick on release.

That's a reasonable explanation of the 16A (4A) rating, but I've never noticed 
switches with ratings like that. It seems quite possible, however. Motors and 
electric lights would have high inrush currents like that.

> Our Starter solenoids are this way. A diode in the right place would
> probably make our 40 year old ignition switches last a lot longer.

Wow, a diode there! That's a TERRIFIC idea. I wonder how the best way to do 
this might be. It might be fairly easy to just solder it onto the back of the 
solenoid, but you'd have to be careful in selecting the diode type.

It might even take 2 diodes, since there are actually 2 different windings: the 
pull-in winding and the hold winding.

I gotta think about this.   ;-)

-- 
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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