Version 4
SHEET 1 880 680
WIRE 336 -32 -48 -32
WIRE 608 -32 512 -32
WIRE 336 -16 336 -32
WIRE 512 -16 512 -32
WIRE 336 96 336 64
WIRE 448 96 336 96
WIRE 608 112 608 -32
WIRE -48 176 -48 -32
WIRE 160 176 96 176
WIRE 272 176 240 176
WIRE 288 176 272 176
WIRE 448 192 448 96
WIRE 96 224 96 176
WIRE -48 320 -48 256
WIRE 96 320 96 304
WIRE 336 320 336 192
WIRE 448 320 448 256
WIRE 512 320 512 64
WIRE 608 320 608 192
FLAG 336 320 0
FLAG 96 320 0
FLAG -48 320 0
FLAG 512 320 0
FLAG 608 320 0
FLAG 448 320 0
FLAG 448 96 drain
FLAG 272 176 gate
SYMBOL voltage -48 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 3.6
SYMBOL nmos 288 96 R0
SYMATTR InstName M1
SYMATTR Value IRLR2908
SYMBOL voltage 96 208 R0
WINDOW 3 -121 -86 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 3.6 0 1n 1n 30u 60u)
SYMBOL ind2 320 -32 R0
SYMATTR InstName L1
SYMATTR Value 22µ
SYMATTR Type ind
SYMBOL ind2 496 80 M180
WINDOW 0 36 80 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName L2
SYMATTR Value 1
SYMATTR Type ind
SYMBOL zener 464 256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5378B
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 256 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res 592 96 R0
SYMATTR InstName R1
SYMATTR Value 2MEG
TEXT -18 0 Left 2 !.tran 0.25m
TEXT 384 -24 Left 2 !k1 l1 l2 0.9