Version 4
SHEET 1 880 680
WIRE -32 -64 -304 -64
WIRE 160 -64 -32 -64
WIRE 240 -64 160 -64
WIRE 160 -48 160 -64
WIRE -32 16 -32 0
WIRE 48 16 -32 16
WIRE 160 16 128 16
WIRE 240 16 160 16
WIRE -304 80 -304 -64
WIRE -32 80 -32 16
WIRE 16 80 -32 80
WIRE 144 80 96 80
WIRE -32 160 -32 80
WIRE 16 160 -32 160
WIRE 144 160 144 80
WIRE 144 160 80 160
WIRE -32 176 -32 160
WIRE 144 192 144 160
WIRE -176 224 -240 224
WIRE -304 304 -304 160
WIRE -240 304 -304 304
WIRE -32 304 -32 272
WIRE -32 304 -240 304
WIRE 144 304 144 256
WIRE 144 304 -32 304
WIRE -32 336 -32 304
FLAG -32 336 0
SYMBOL npn -96 176 R0
SYMATTR InstName Q1
SYMATTR Value 2N3055
SYMBOL ind 144 0 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName L1
SYMATTR Value 1m
SYMBOL cap 144 -48 R0
SYMATTR InstName C1
SYMATTR Value 20µ
SYMBOL diode -16 0 R180
WINDOW 0 40 33 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value MURS320
SYMBOL res -80 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 20
SYMBOL res 224 -80 R0
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL diode 16 176 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value MURS120
SYMBOL res 112 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL cap 128 192 R0
SYMATTR InstName C2
SYMATTR Value 1n
SYMBOL voltage -304 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 50
SYMBOL voltage -240 208 R0
WINDOW 0 41 51 Left 2
WINDOW 3 -79 119 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(-5 10 50u 100n 100n 50u 100u)
TEXT 208 320 Left 2 !.tran 0 1m 0 100n