Version 4
SHEET 1 880 680
WIRE -704 -640 -704 -656
WIRE -704 -640 -848 -640
WIRE -320 -640 -704 -640
WIRE -704 -608 -704 -640
WIRE -848 -592 -848 -640
WIRE -704 -496 -704 -528
WIRE -544 -496 -704 -496
WIRE -528 -496 -544 -496
WIRE -704 -464 -704 -496
WIRE -528 -448 -528 -496
WIRE -240 -448 -528 -448
WIRE -224 -448 -240 -448
WIRE -1056 -416 -1072 -416
WIRE -864 -416 -992 -416
WIRE -848 -416 -848 -512
WIRE -848 -416 -864 -416
WIRE -768 -416 -848 -416
WIRE -864 -352 -864 -416
WIRE -1072 -320 -1072 -416
WIRE -704 -288 -704 -368
WIRE -704 -160 -704 -208
WIRE -576 -160 -704 -160
WIRE -704 -112 -704 -160
WIRE -576 -96 -576 -160
WIRE -704 80 -704 -32
WIRE -576 80 -576 -32
FLAG -1072 -240 0
FLAG -704 -736 0
FLAG -1072 -416 in_bip
FLAG -544 -496 out_bip
FLAG -704 80 0
FLAG -864 -272 0
FLAG -576 80 0
SYMBOL npn -768 -464 R0
SYMATTR InstName Q1
SYMATTR Value BC846B
SYMBOL voltage -704 -640 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 40
SYMBOL voltage -1072 -336 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 24 96 Invisible 2
SYMATTR Value SINE(0 2 300k)
SYMATTR InstName V2
SYMBOL res -720 -624 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -720 -128 R0
SYMATTR InstName R2
SYMATTR Value 1500
SYMBOL res -864 -608 R0
SYMATTR InstName R3
SYMATTR Value 169.09k
SYMBOL res -880 -368 R0
SYMATTR InstName R4
SYMATTR Value 7.33k
SYMBOL cap -992 -432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 500n
SYMBOL cap -560 -32 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 330n
SYMBOL res -720 -304 R0
SYMATTR InstName R5
SYMATTR Value 650
SYMBOL cap -176 -464 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 500n
TEXT -1104 -824 Left 2 !.tran 0 40u 0 0.1u