Re: Who is right?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "davep by way of Terry Fritz <twftesla-at-uswest-dot-net>" <davep-at-quik-dot-com>

Tesla list wrote:

> Original poster: "ebyng by way of Terry Fritz <twftesla-at-uswest-dot-net>"
><ebyng-at-netlimit-dot-com>
 
> I hate to ask this, but...
 
> I was browsing through some old books at a used book store recently
> (yesterday) and i came accross a book devoted to the study of capacitors.
> It states that when stringing capacitors, in serial or in parallel, only
> the capacitance rateing changes, not the voltage rating.

	Wrong.  Or so poorly phrased as to be wrong.  Or some context
	is missing.  In Theory, (assuming equal caps & voltage
	ratings) the cap of a series assembly goes down and the voltage
	rating goes up, in proportion to the number of units.

	In parallel, the voltage remains that of a unit, the cap
	goes up as the number of units...

	As you state, correctly:
	
> I cross referenced with a newer book, and it states that Both the
> capacitance and voltage ratings change in proportion to the number
> of capacitors connected.

> So...

> Who is right?  I'm tempted to stick with the newer book, but i'd just
> like  to double check...

	Your right.

	In Practice it is risky to Assume that the voltage will
	divide equally across the units:  voltage dividers (lossy)
	are indicated to force sharing.  There will be some
	variance in voltage/unit, if nothing else due to variation in
	cap due to manufacturing tolerance... 

	best
	dwp