Version 4 SHEET 1 2132 1968 WIRE 1504 1264 1504 1232 WIRE 1040 1312 1040 1248 WIRE 1504 1360 1504 1344 WIRE 1504 1360 1456 1360 WIRE 1648 1360 1504 1360 WIRE 1872 1360 1712 1360 WIRE 1952 1360 1872 1360 WIRE 1968 1360 1952 1360 WIRE 1504 1392 1504 1360 WIRE 1872 1408 1872 1360 WIRE 1040 1440 1040 1392 WIRE 1040 1440 976 1440 WIRE 1264 1440 1232 1440 WIRE 1360 1440 1328 1440 WIRE 1408 1440 1360 1440 WIRE 1440 1440 1408 1440 WIRE 976 1456 976 1440 WIRE 1040 1488 1040 1440 WIRE 1232 1488 1232 1440 WIRE 1360 1488 1360 1440 WIRE 1504 1504 1504 1488 WIRE 1504 1504 1456 1504 WIRE 1584 1504 1504 1504 WIRE 1664 1504 1648 1504 WIRE 1680 1504 1664 1504 WIRE 1504 1520 1504 1504 WIRE 1872 1536 1872 1488 WIRE 1680 1552 1680 1504 WIRE 1360 1616 1360 1568 WIRE 1040 1632 1040 1568 WIRE 1504 1648 1504 1600 WIRE 1680 1648 1680 1632 WIRE 1680 1664 1680 1648 WIRE 1872 1664 1872 1616 WIRE 1680 1792 1680 1744 FLAG 1504 1232 VCC FLAG 1504 1648 VEE FLAG 976 1456 0 FLAG 1040 1248 VCC FLAG 1040 1632 VEE FLAG 1456 1360 C FLAG 1456 1504 E FLAG 1952 1360 OUT FLAG 1360 1616 0 FLAG 1232 1488 0 FLAG 1664 1504 IN FLAG 1680 1792 0 FLAG 1872 1664 0 FLAG 1408 1440 B FLAG 1680 1648 S SYMBOL voltage 1040 1296 R0 SYMATTR InstName Vps1 SYMATTR Value 10V SYMBOL res 1488 1248 R0 SYMATTR InstName RC SYMATTR Value 10k SYMBOL npn 1440 1392 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222 SYMBOL res 1488 1504 R0 SYMATTR InstName RE SYMATTR Value 10k SYMBOL voltage 1040 1472 R0 SYMATTR InstName Vps2 SYMATTR Value 10V SYMBOL cap 1712 1344 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1 SYMBOL cap 1648 1488 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1 SYMBOL res 1856 1392 R0 SYMATTR InstName Rload SYMATTR Value 10k SYMBOL res 1344 1472 R0 SYMATTR InstName RB SYMATTR Value 100k SYMBOL cap 1328 1424 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 1 SYMBOL voltage 1680 1648 R0 WINDOW 123 24 118 Left 2 SYMATTR Value2 AC 0mV 0 SYMATTR InstName Vs1 SYMATTR Value 0V SYMBOL voltage 1872 1520 R0 WINDOW 123 24 118 Left 2 SYMATTR Value2 AC 10mV 0 SYMATTR InstName Vs2 SYMATTR Value 0V SYMBOL res 1664 1536 R0 SYMATTR InstName RS SYMATTR Value 50 TEXT 1536 1920 Left 2 !.AC DEC 100 1Hz 100kHz TEXT 1656 1872 Left 2 ;.OP