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.
Post your .asc file.
Success!Crutschow I'll try to upload schematic file but I'm having problems with connection as usual So tnx anyhow and I'll keep trying!
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!
Indeed! Placement of a diode across the b-e junction is essential to even the most basic design!
Heaven forbid I dare you to think! -- Shall I take 20 lines?and she insists on making homework exercise out of everything cuz I'm like a perpetual kid in her eyes!
Thinking is highly overrated and should be discouraged at any level of growth.Heaven forbid I dare you to think! -- Shall I take 20 lines?
TTFN
HP