* D:\Documents\Sims\LTSpice\2026\09 - Sept\23\nodiodes2g2+gdt_cg.asc
* Generated by LTspice 24.1.9 for Windows.
L1 N009 N012 10 Rser=0.3125
R1 N009 N011 1
R2 N012 N011 1
R5 N012 CG 1
C2 N011 Pin2 100f Rser={ESR}
C4 Pin1 N010 100f IC=PC Rser={ESR}
L3 N007 N006 2 Rser=62.5m
R7 N006 Pin1 1
R8 N007 Pin2 1
L5 N001 EL_5 2 Rser=2
R11 N001 EL_5 1
D1 N002 N003 D
R3 0 N003 {res}
R4 N002 N001 {res}
S1 N004 N005 Pin2 MON G
S2 N005 N004 MON Pin2 G
R6 N004 MON 1e8
C1 MON N005 {Tau/100Meg} Rser={ESR}
C3 CG N008 1p Rser={ESR}
R9 N010 CG 1
R10 N004 Pin1 1
R12 Pin2 N005 1
R13 0 N008 1
.model D D
.lib C:\Users\vinya\AppData\Local\LTspice\lib\cmp\standard.dio
.param PC=3u
.tran 0 1e5 0 20m
K2 L3 L5 .99
.options reltol = 0.04
* Disconnect the neon\nbulb to turn this\ncircuit OFF.
* 'MON' is an internal node\nwithin the neon bulb. It\ndiscloses to us that the\ninternal dynamics is al-\nlowed to 'float' its vol-\ntage without limitation.
.param res = 3
.model G SW(Ron={Zon} Roff=1T Vt={.5*(Vstrike+Vhold)} Vh={.5*(Vstrike-Vhold)} Vser={Vhold-Ihold*Zon})
.param Vstrike=100 Vhold=50 Zon=2K Ihold=200u Tau=100u
.param esr = 3
* GEAR APPROXIMATION METHOD
* 19m <= max time step >= 20m\n          comatose vs surge
.backanno
.end