Quote:
Originally Posted by MrB
Unbelieveable, reverse polarity protection is as easy as a 3 cent diode... or the ultimate is a ~50 cent P-chan MOSFET. 
Yet another reason I don't like certain manufacturers (the Ford and Holdens of the 'scope world) |
While I agree that some protection should be offered (there are always things that can go wrong, and doubly so in the dark), you have to keep in mind that a protective (silicon) diode causes a 0.7V drop in voltage. This means your car battery powered scope mount will stop working 0.7V sooner as the car battery discharges. Depending on the minimum voltage the mount needs to operate this can be a considerable amount of battery time you're losing.
Cheers
Steffen.