Version 4
SHEET 1 1164 680
WIRE -656 -912 -832 -912
WIRE -560 -912 -656 -912
WIRE -1568 -864 -1568 -928
WIRE -1056 -864 -1056 -928
WIRE -832 -800 -832 -912
WIRE -880 -784 -880 -832
WIRE -2144 -736 -2144 -768
WIRE -1568 -720 -1568 -784
WIRE -1504 -720 -1568 -720
WIRE -1408 -720 -1424 -720
WIRE -1200 -720 -1344 -720
WIRE -1056 -720 -1056 -784
WIRE -1056 -720 -1120 -720
WIRE -880 -688 -880 -736
WIRE -832 -688 -832 -720
WIRE -704 -688 -832 -688
WIRE -2544 -672 -2544 -768
WIRE -2448 -672 -2448 -736
WIRE -1408 -672 -1408 -720
WIRE -1216 -672 -1408 -672
WIRE -1568 -656 -1568 -720
WIRE -1056 -656 -1056 -720
WIRE -2144 -624 -2144 -656
WIRE -1360 -608 -1504 -608
WIRE -1344 -608 -1344 -720
WIRE -1344 -608 -1360 -608
WIRE -1216 -608 -1216 -672
WIRE -1200 -608 -1216 -608
WIRE -1120 -608 -1200 -608
WIRE -704 -608 -704 -640
WIRE -752 -592 -752 -640
WIRE -2544 -528 -2544 -592
WIRE -704 -480 -704 -528
WIRE -560 -480 -560 -912
WIRE -560 -480 -704 -480
WIRE -2448 -464 -2448 -592
WIRE -1568 -464 -1568 -560
WIRE -1056 -464 -1056 -560
WIRE -784 -448 -784 -480
WIRE -752 -448 -752 -544
WIRE -752 -448 -784 -448
WIRE -1360 -368 -1360 -608
WIRE -1200 -368 -1200 -608
FLAG -2544 -768 12V
FLAG -2544 -528 0
FLAG -880 -832 0
FLAG -2448 -464 0
FLAG -2144 -624 0
FLAG -880 -688 Switch1
FLAG -2448 -736 Switch1
FLAG -2144 -768 switch2
FLAG -752 -640 0
FLAG -784 -480 switch2
FLAG -1568 -464 0
FLAG -1056 -464 0
FLAG -1056 -928 12V
FLAG -1568 -928 12V
FLAG -1360 -368 S
FLAG -704 -688 S
FLAG -1200 -368 R
FLAG -704 -640 R
FLAG -656 -912 0
SYMBOL voltage -2544 -688 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12V
SYMBOL sw -832 -816 R0
SYMATTR InstName S1
SYMATTR Value SW1
SYMBOL voltage -2448 -688 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(-1 20 2 0 0 2.5 5 1)
SYMBOL voltage -2144 -752 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(20 -1 15 0 0 2 4 1)
SYMBOL sw -704 -624 R0
SYMATTR InstName S2
SYMATTR Value SW2
SYMBOL npn -1120 -656 R0
SYMATTR InstName Q1
SYMATTR Value 2N2369
SYMBOL npn -1504 -656 M0
SYMATTR InstName Q2
SYMATTR Value 2N2369
SYMBOL res -1104 -736 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 3,6k
SYMBOL res -1408 -736 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 3,6k
SYMBOL res -1552 -768 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 360
SYMBOL res -1040 -768 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName Last
SYMATTR Value 360
TEXT -2872 -800 Left 2 !.model SW2 SW()
TEXT -2864 -760 Left 2 !.model SW1 SW()
TEXT -2872 -712 Left 2 !.tran 0 20s 0 0.1