 CWSSTC
|
|
|
badastronaut
|
|
Tue Dec 08 2009, 03:46AM
|
|
|
Registered Member #222
Joined: Mon Feb 20 2006, 05:49PM
Location:
Posts: 96
|
A Tesla coil can be modeled as a quarter wave transmission line. At that condition, the impedance looking into the base of the coil is Zin=Zo^2/ZL. This says that the input impedance looks smaller when the load impedance is high, up to the limit of looking like a short circuit.
This seems to mean that Tesla coils are low impedance devices when operating at high VSWR, so why not use a high frequency step down transformer to try to match the driver capabilities to the load? The secondary of the transformer would connect directly to the base of the secondary coil and ground to provide high coupling. High coupling would otherwise cause a near shoot through condition otherwise.
Low coupling would seem to me to lead to high reactive power in the driver, which will reduce efficiency.
This could allow for CW operation without a breakout point.
Anyone want to try this out? meow meow meow says the beckoning cat
|
|
Back to top
|
|
|
teravolt
|
|
Registered Member #195
Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
|
you might be refering to a magnefier tesla where the bottom of the secondary is fed by a low impedance oscilator.
|
|
Back to top
|
|
|
Wolfram
|
|
Registered Member #33
Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
|
See the comments about base feeding in this  thread.
Anders M.
|
|
Back to top
|
|
Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob
|
|
Powered by e107 Forum System
|
