Version 4
SHEET 1 1492 932
WIRE 720 -16 -320 -16
WIRE 720 64 720 -16
WIRE 192 160 32 160
WIRE 416 160 272 160
WIRE 608 240 560 240
WIRE 720 240 720 144
WIRE 720 240 688 240
WIRE 880 240 720 240
WIRE 32 272 32 160
WIRE 208 272 32 272
WIRE 416 272 416 160
WIRE 416 272 272 272
WIRE 720 304 720 240
WIRE 880 304 880 240
WIRE 416 352 416 272
WIRE 416 352 160 352
WIRE 560 352 560 240
WIRE 560 352 416 352
WIRE 656 352 560 352
WIRE -320 368 -320 -16
WIRE -320 368 -544 368
WIRE 32 368 32 272
WIRE 32 368 -320 368
WIRE 208 368 32 368
WIRE 32 400 32 368
WIRE 416 400 416 352
WIRE 160 448 160 352
WIRE 160 448 96 448
WIRE 208 448 208 368
WIRE 352 448 208 448
WIRE -544 528 -544 368
WIRE 32 608 32 496
WIRE 416 608 416 496
WIRE 416 608 32 608
WIRE 720 608 720 400
WIRE 720 608 416 608
WIRE 880 608 880 384
WIRE 880 608 720 608
WIRE 720 656 720 608
WIRE 416 672 416 608
WIRE -544 816 -544 608
WIRE 416 816 416 752
WIRE 416 816 -544 816
FLAG -544 368 Battery
FLAG 720 656 0
FLAG 880 240 Osci
SYMBOL ind 176 176 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 220µ
SYMATTR SpiceLine Ipk=1.2 Rser=0.38
SYMBOL cap 272 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 470p
SYMATTR SpiceLine V=16 Irms=0 Rser=0.34 Lser=420.98p mfg="Würth Elektronik" pn="885012208021 WCAP-CSGP 1206" type="X7R"
SYMBOL npn 352 400 R0
SYMATTR InstName Q1
SYMATTR Value BC550C
SYMBOL npn 96 400 M0
SYMATTR InstName Q2
SYMATTR Value BC550C
SYMBOL voltage -544 512 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 1.5V
SYMBOL res 400 656 R0
SYMATTR InstName R1
SYMATTR Value 2k2
SYMBOL npn 656 304 R0
SYMATTR InstName Q3
SYMATTR Value BC550C
SYMBOL res 704 48 R0
SYMATTR InstName R2
SYMATTR Value 2k2
SYMBOL res 704 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 680k
SYMBOL res 864 288 R0
SYMATTR InstName R4
SYMATTR Value 1000K
TEXT -96 872 Left 2 !.tran 0 30mS 20mS
TEXT -96 840 Left 2 !.include StandartBJT.mod