Vackar's Oscillator Circuit * Vackar is a derivation of Colpitt's oscillator (LC based). * Oscillation is taken on node 4. * Predicted frequency is 1.91803e+06Hz. * Models: .model qnl npn(level=1 bf=80 rb=100 ccs=2pf tf=0.3ns tr=6ns cje=3pf cjc=2pf va=50) vcc 1 0 5 pwl 0 10 1e-9 5 lrfc 1 2 100u cdec 2 0 7n q1 3 2 0 qnl rb 3 0 4700 c1 3 4 100p c2 3 0 600p c0 4 0 1n l1 4 1 6.2u *.tran 30n 12u *.plot tran v(4) .pss 1e6 10e-6 4 1024 10 50 5e-3 uic