[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Wireless Power Transmission
Original poster: "Dave" <dgoodfellow@xxxxxxxxxxxxxx>
Drake:
As I understand it, we normally tune a Tesla coil for a quarter
wave. That is where the voltage is at it's maximum, and the current
is at it's minimum. If we set up the coil for 1/8 wave, (picture 45
electrical degrees instead of 90 degrees of sine wave) that is the
point where voltage and current are both at 70% of their maximum. If
you were to take a coil that puts out a good spark and increase the
topload size until it can barely issue a spark, it seems to become
somewhat of an energy radiator. At least that's when the electronics
in my house seem to be distressed the most, and not when I am running
a coil that is gushing out the sparks. I am a rule of thumb coiler,
someone else on the list will have to provide all the math. :-) It
will probably prove that what I just said is way off base, but I
never was very successful in crunching numbers in this hobby.
Dave Goodfellow
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, March 28, 2007 12:34 AM
Subject: Re: Wireless Power Transmission
Original poster: "Drake Schutt" <drake89@xxxxxxxxx>
Well I always watch this debate whenever it comes up, but this time
I have a question.
Can someone please explain to me how TC's transmit electricity and
why they're so inefficient, in terms that someone with a basic
knowledge physics (AP next year!) and precalculus could
understand? Also what is it that proponents of wireless power
transmission propose we do to 'light up the world' and why is this
"against the laws of physics", as i believe a lot of people
say? One last question- I remember hearing that when a coil is
tuned for maximum energy transfer it produces minimal sparks, is this true?
thanks for any responses, I'm sure there are answers in the archives
but I'm too lazy to sort through all of the flame wars.
Drake Schutt