chargers

[Gary@innevations.com (Gary Flo)]

Tim Nichols
wrote:

>A couple questions about battery chargers...
>
>Are any of the widely available EV chargers microprocessor controlled?  You
>know, the Zivans, K&W, Russco, etc.
>
>Do any of the widely available EV chargers have power factor correction?
>Something that would be important if you're trying to get the max out of a
>120 volt circuit with a 15 amp breaker.
>
>Do they tend to use linear or switching regulators?
>
>Which ones use a transformer to give isolation from the 120 input?

Zivan is microprocessor controlled.  Russco is not, K&W?

None have PFC although Russco is designed to adjust AC input current to
prevent tripping.  Also has less peaky waveform than Zivan, implying
greater output with less tripping for same input current.  Isn't this right
Russ?

I believe they all use switching regulators, though not sure.

Zivan is isolated.  HF transformer runs over 40KHz.  Others are NOT isolated.

These are the reasons I like the Zivan.

Gary Flo, owner InnEVations