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Re: Duncan Cadd on Tesla Coils
Original poster: westland <westland@xxxxxx>
I realize that ... but his point is that there is a charge 'conveyer'
mechanism in both devices, that pushes charge up the column at
dq/dt (a rate that is much faster with a damped intermittent
resonant tesla 'conveyer') and that both use a column that
essentially keeps the charge on the top load with what are in effect
equipotential rings. ...
Tesla list wrote:
Original poster: Ed Phillips <evp@xxxxxxxxxxx>
Yeah, the shooter pic is a bit over the top ... particularly the
graininess; I kind of expect a ransom note with it.
Why don't you buy his idea that resonance plays the role of the VdG
belt, and is what transports the tesla coil's charge up to the topload?
Just curious, since the total voltage up there is proportional to
the square root of the ration of the secondary capacitance to the
primary capacitance, his explanation is an attractive fit with the
specs of a VdG generator.
The Van de Graaf generator is a DC device in which charge is
attached to the belt at the ground end and transported MECHANICALLY
to the HV terminal where it is collected. Almost exactly analogous
to a bucket pump. Steady state device and output is DC.
The TC is a resonant AC transformer and the principle of
operation is totally different. The charge from the primary
capacitor is discharged through its inductance to form an
oscillating magnetic field which excites the secondary through
J. Christopher Westland, PhD CPA
Professor, ISMT, University of Science & Technology, HK Clearwater
Bay,Kowloon, Hong Kong
Tel: 852 2358 7643
Fax: 852 2358 2421
Mob: 852 9528 1745
Mobile e-mail: chris.westland@xxxxxxxxxxxx