HALF-WAVE THYRISTOR RECTIFIER WITH R-L LOAD
* FILE ECE412_5.CIR
.PARAM PERIOD={1/60}
Vg 4 2 PULSE( 0V 10V {(30/360)*PERIOD} 1ns 1ns 50us {PERIOD}) ;gate signal
vs 1 0 SIN(0V {120*SQRT(2)} 60Hz) ;120V, 60Hz Source
XT 1 2 4 2 SCR ;Thyristor calls .SUBCKT SCR
R  2 3 25ohm
L  3 0 20mH
* BEGIN THYRISTOR SUBCKT
.SUBCKT  SCR    1      2        3        2
*        Model  Anode  Cathode  +Control -Control
*        Name                    Voltage  Voltage
S1    1 5 6 2 SMOD ;Voltage controlled switch
RG    3 4 10ohm
VX    4 2 DC 0V    ;Current sense source
VY    5 7 DC 0V    ;Current sense source
DT    7 2 DMOD
RT    6 2 1ohm
CT    6 2 10uF
RSNUB 1 8 1000ohm
CSNUB 8 2 0.1uF
F1 2 6 POLY(2) VX VY 0 50 20 ;Polynomial controlled source
.MODEL SMOD VSWITCH (RON=0.0125 ROFF=10E4 VON=2V)
.MODEL DMOD D( IS=15E-3 BV=600V RS=0.01 Cjo=10E-9)
.ENDS SCR
* END OF THYRISTOR SUBCKT
.PROBE
.TRAN 5us 16.66667ms 
.END