Re: transformer theory q

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

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

Tesla list wrote:
 
> Original poster: "Peter Lawrence by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <Peter.Lawrence-at-Sun-dot-com>
 
> Many thanks for all the responses so far to the transformer theory question.
> I think the answer to question 1 can be summarized as:
> 
>         fewer turns in the primary lowers its inductance and causes the
>         primary current to increase (at least when the secondary is unloaded,
>         not so sure about the loaded case). the effect is rather large,
>         a 10% decrease in primary turns can cause 5x primary current in the
>         unloaded condition.

> I still have not heard a clear answer to part 2, what happens (to the
> primary current)

	Loaded or unloaded?

> when there are more than the recommended primary turns (take +10%
> as an example).

	If unloaded current, i would expect the current to drop roughly
	in proportion to the increase in turns.

	I would expect max power output to decrease.

	best
	dwp