* SPICE netlist
R1 N001 N004 {R1}
R2 N001 N005 4k
R3 N001 N006 10k
Q1 N004 N009 0 0 2N2222
Q2 N006 N005 0 0 2N2222
C1 N005 N004 {C1}
V1 N001 0 9 Rser=1
VOFF N003 0 PULSE(0 9 0.5 10n 10n 50m 1 2)
R5 N006 N009 1k
L2 N008 N007 50m Rser=10
M2 N007 N002 0 0 IRFH5302
M3 N007 N002 N001 N001 IRF7210
M4 N008 N003 N001 N001 IRF7210
M5 N008 N003 0 0 IRFH5302
VON N002 0 PULSE(0 9 0.6 10n 10n 50m 1 2)
Q3 N002 N011 0 0 2N2222
Q4 N003 N010 0 0 2N2222
R9 N003 N001 1k
R10 N002 N001 1k
R11 N010 N002 10k
R12 N011 N003 10k
D3 N003 N006 1N4007
D4 N002 N006 1N4007
.param R1=10k C1=10u tau=100m
.param Rp={R1*(tau/C1)/(R1-(tau/C1))}
.tran 0 2s 0 0.1m
+ CJO=46.4p M=0.333 N=4.11 TT=72.0n )

* LTspice schematic (.asc)
Version 4
SHEET 1 2128 752
WIRE -936 -360 -1064 -360
WIRE -760 -360 -936 -360
WIRE -584 -360 -760 -360
WIRE 8 -360 -584 -360
WIRE 760 -360 8 -360
WIRE 8 -280 8 -360
WIRE 8 -280 -136 -280
WIRE 168 -280 8 -280
WIRE 760 -280 760 -360
WIRE 760 -280 552 -280
WIRE 952 -280 760 -280
WIRE -1064 -264 -1064 -280
WIRE 504 -264 456 -264
WIRE 1064 -264 1000 -264
WIRE -936 -200 -936 -280
WIRE -872 -200 -936 -200
WIRE -760 -200 -760 -280
WIRE -760 -200 -808 -200
WIRE -328 -200 -360 -200
WIRE -136 -200 -264 -200
WIRE -584 -152 -584 -280
WIRE -440 -152 -584 -152
WIRE -360 -152 -360 -200
WIRE -360 -152 -440 -152
WIRE -136 -152 -136 -200
WIRE 72 -152 -136 -152
WIRE 296 -152 72 -152
WIRE 1064 -152 1064 -264
WIRE 1064 -152 296 -152
WIRE -360 -120 -360 -152
WIRE -328 -120 -360 -120
WIRE -40 -120 -264 -120
WIRE 168 -120 168 -200
WIRE 168 -120 -40 -120
WIRE 392 -120 168 -120
WIRE 456 -120 456 -264
WIRE 456 -120 392 -120
WIRE -936 -104 -936 -200
WIRE -584 -104 -584 -152
WIRE -40 -104 -40 -120
WIRE 72 -104 72 -152
WIRE 552 -104 552 -184
WIRE 712 -104 552 -104
WIRE 952 -104 952 -184
WIRE 952 -104 792 -104
WIRE -1016 -56 -1048 -56
WIRE -1000 -56 -1016 -56
WIRE -760 -56 -760 -200
WIRE -648 -56 -760 -56
WIRE 552 -56 552 -104
WIRE 952 -56 952 -104
WIRE -136 -24 -136 -152
WIRE 168 -24 168 -120
WIRE -40 24 -40 -24
WIRE -40 24 -72 24
WIRE 72 24 72 -24
WIRE 104 24 72 24
WIRE 456 24 456 -120
WIRE 504 24 456 24
WIRE 1064 24 1064 -152
WIRE 1064 24 1000 24
WIRE -936 40 -936 -8
WIRE -584 40 -584 -8
WIRE 552 56 552 40
WIRE 952 56 952 40
WIRE -136 88 -136 72
WIRE 168 88 168 72
WIRE -1016 136 -1016 -56
WIRE -616 136 -1016 136
WIRE -440 136 -440 -152
WIRE -440 136 -536 136
WIRE 296 248 296 -152
WIRE 392 248 392 -120
WIRE 296 344 296 328
WIRE 344 344 296 344
WIRE 392 344 392 328
WIRE 392 344 344 344
WIRE 344 376 344 344
FLAG -936 40 0
FLAG -584 40 0
FLAG -1064 -264 0
FLAG 552 56 0
FLAG 344 376 0
FLAG -136 88 0
FLAG 168 88 0
FLAG 952 56 0
SYMBOL res -952 -376 R0
SYMATTR InstName R1
SYMATTR Value {R1}
SYMBOL res -776 -376 R0
SYMATTR InstName R2
SYMATTR Value 4k
SYMBOL res -600 -376 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL npn -1000 -104 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL npn -648 -104 R0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL cap -808 -216 R90
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL voltage -1064 -376 R0
SYMATTR SpiceLine Rser=1
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL voltage 296 232 R0
SYMATTR InstName OFF
SYMATTR Value PULSE(0 9 0.5 10n 10n 50m 1 2)
SYMBOL res -520 120 R90
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL ind 808 -120 R90
SYMATTR InstName L2
SYMATTR Value 50m
SYMATTR SpiceLine Rser=10
SYMBOL nmos 504 -56 R0
SYMATTR InstName M2
SYMATTR Value IRFH5302
SYMBOL pmos 504 -184 M180
SYMATTR InstName M3
SYMATTR Value IRF7210
SYMBOL pmos 1000 -184 R180
SYMATTR InstName M4
SYMATTR Value IRF7210
SYMBOL nmos 1000 -56 M0
SYMATTR InstName M5
SYMATTR Value IRFH5302
SYMBOL voltage 392 232 M0
SYMATTR InstName ON
SYMATTR Value PULSE(0 9 0.6 10n 10n 50m 1 2)
SYMBOL npn 104 -24 R0
SYMATTR InstName Q3
SYMATTR Value 2N2222
SYMBOL npn -72 -24 M0
SYMATTR InstName Q4
SYMATTR Value 2N2222
SYMBOL res -152 -184 M180
SYMATTR InstName R9
SYMATTR Value 1k
SYMBOL res 152 -184 M180
SYMATTR InstName R10
SYMATTR Value 1k
SYMBOL res -56 -8 M180
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res 56 -8 M180
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL diode -264 -216 R90
SYMATTR InstName D3
SYMATTR Value 1N4007
SYMBOL diode -264 -136 R90
SYMATTR InstName D4
SYMATTR Value 1N4007