Version 4
SHEET 1 880 680
WIRE -16 80 -192 80
WIRE 128 80 48 80
WIRE 192 80 128 80
WIRE 384 80 256 80
WIRE 592 80 384 80
WIRE 704 80 592 80
WIRE 592 96 592 80
WIRE 384 112 384 80
WIRE -192 176 -192 80
WIRE 128 192 128 80
WIRE 192 192 128 192
WIRE 384 192 384 176
WIRE 384 192 256 192
WIRE 592 192 592 160
WIRE 592 192 384 192
WIRE 704 192 592 192
WIRE 384 224 384 192
WIRE -192 304 -192 256
WIRE 384 320 384 304
FLAG 384 320 0
FLAG -192 304 0
FLAG 704 80 BST
FLAG 704 192 SW
SYMBOL voltage -192 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0V 5V 1m 0 0 1m 2m)
SYMBOL voltage 384 208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 26V 30m 10m 1n 30m)
SYMBOL cap 48 64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL cap 400 176 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 1µF
SYMBOL schottky 256 176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 192 96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL zener 608 160 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value EDZV6_2B
TEXT -226 344 Left 2 !.tran 100m