- Joined Mar 14, 2015
Crutschow R2 is just arbitrary high impedance load to try and make simulator happy by closing secondary circuit! So the real oscillator runs w/o any connection to top of secondary at allThe value of R2 seems a little high.
Post your .asc file.
Indeed! What @Aleph(0) was 'missing' was the fact that even an 'open' secondary is capacitively loaded - and, considering the frequencies involved, to significantly lower impedance than 10MΩI just took crutschow's first bit of advice and changed R2 to 22k.Works fine.
Further to that, please be advised that much of the 'demonstration phenomena' (i.e. brilliant illumination of linear florescent lamps, etc) owe far more to the circuit's relatively high operating frequency than to its (decidedly modest) output EMF (With attention to the former's role in 'enhanced' electrostatic coupling, radiation/transmission line effects, etc...)Cruchow tnx! Cuz I never thought to just add lumped capacitance to end of secondary! I was trying to think of way to have capacitance continuous along length of coil so I was over-complicating it
So anyhow now I'm playing with simulation and smaller cap gives higher voltage which I say is more to do with higher freq than just less loading cuz XC is tuned out at resonance anyhow So I'm happy that Ltspice is more fun now that I'm getting feel for it!
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by Jake Hertz
by Jake Hertz
by Luke James