Version 4
SHEET 1 2344 1936
WIRE -80 1152 -176 1152
WIRE -16 1152 -80 1152
WIRE 432 1152 -16 1152
WIRE -176 1168 -176 1152
WIRE -80 1200 -80 1152
WIRE -176 1264 -176 1248
WIRE -16 1280 -16 1152
WIRE 432 1280 432 1152
WIRE -144 1328 -176 1328
WIRE -128 1328 -144 1328
WIRE -80 1328 -80 1280
WIRE 368 1328 272 1328
WIRE -176 1360 -176 1328
WIRE 32 1376 -16 1376
WIRE 272 1376 272 1328
WIRE 432 1376 368 1376
WIRE 464 1376 432 1376
WIRE -16 1392 -16 1376
WIRE 112 1392 112 1376
WIRE 272 1392 272 1376
WIRE 432 1392 432 1376
WIRE 192 1408 192 1376
WIRE 304 1408 192 1408
WIRE 320 1408 304 1408
WIRE 368 1408 368 1376
WIRE -176 1488 -176 1440
WIRE -16 1488 -16 1472
WIRE 112 1488 112 1456
WIRE 272 1488 272 1456
WIRE 432 1488 432 1472
FLAG -176 1488 0
FLAG -176 1328 IN
FLAG 464 1376 OUT
IOPIN 464 1376 Out
FLAG -176 1264 0
FLAG -16 1488 0
FLAG 112 1488 0
FLAG 432 1488 0
FLAG 272 1488 0
SYMBOL npn -80 1280 R0
SYMATTR InstName Q1
SYMATTR Value BC546B
SYMBOL voltage -176 1344 R0
WINDOW 123 24 105 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value ""
SYMBOL cap -80 1312 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 200n
SYMBOL voltage -176 1152 R0
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL res -32 1376 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res -96 1184 R0
SYMATTR InstName R1
SYMATTR Value 2200k
SYMBOL res 128 1360 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 7 57 VTop 2
SYMATTR InstName R3
SYMATTR Value 4,7k
SYMBOL cap 96 1392 R0
SYMATTR InstName C2
SYMATTR Value 470p
SYMBOL res 208 1360 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 8 57 VTop 2
SYMATTR InstName R4
SYMATTR Value 5,6k
SYMBOL res 288 1360 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 7 59 VTop 2
SYMATTR InstName R5
SYMATTR Value 9,1k
SYMBOL npn 368 1280 R0
SYMATTR InstName Q2
SYMATTR Value BC546B
SYMBOL res 416 1376 R0
WINDOW 3 16 55 VCenter 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL cap 256 1392 R0
SYMATTR InstName C3
SYMATTR Value 150p
SYMBOL cap 368 1392 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 680p
TEXT -192 1528 Left 2 !.ac dec 10 1 50k