[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Why tesla coil is air-cored to operate efficiently at high freq?
- To: tesla@xxxxxxxxxx
- Subject: Re: Why tesla coil is air-cored to operate efficiently at high freq?
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Sat, 08 Oct 2005 22:46:14 -0600
- Delivered-to: firstname.lastname@example.org
- Delivered-to: email@example.com
- Old-return-path: <firstname.lastname@example.org>
- Resent-date: Sat, 8 Oct 2005 22:47:17 -0600 (MDT)
- Resent-from: tesla@xxxxxxxxxx
- Resent-message-id: <3tG3yC.A.s5.QDKSDB@poodle>
- Resent-sender: tesla-request@xxxxxxxxxx
Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>
Tesla list wrote:
Original poster: d a <btoc3000@xxxxxxxxxxxx>
I have three theoretical questions here:
I read this from a website: "A normal transformer users an iron core
in order to operate at low frequencies, whereas the Tesla Coil is
air-cored to operate efficiently at much higher frequencies".
I understand that a normal transformer relies on turn ratios and the
air core is there to reinforce the magnetic flux.
May I then ask, why is an iron core only required in low frequency
operation and why do we use an air-core for high frequency operation?
A core in a Tesla coil would increase coupling and result in too few
turns in the primary coil, if the inductances are kept. Would also be
a serious insulation problem. In high-frequency operation, cores are
not used because they are not necessary.
Lastly, I read this from another website: " In the Tesla "swing",
the kick is supplied by the AC electrical current moving back and
forth". Can someone elaborate on this please? Is it actually
referring to the LC circuit - both the secondary and primary
operating at the same frequency that reinforce each other?
Possibly. One of these texts that mention a thing called "inductive
kick", that approximates the actual behavior of an induction coil, and
has no relation with the operation of a Tesla coil.
Antonio Carlos M. de Queiroz