[Amps] Re: AB1 v. AB2

[2@vc.net (Rich)]

>The grid power supply is an integral part of a feedback loop that regulates
>the voltage to the
>optimum level and polarity for a particular class off operation.

**  is the polarity ever other than negative.? 
-  Does the grid supply regulate the level or allow the operator to 
adjust the level?


-  Rich..., 805.386.3734, www.vcnet.com/measures.