Version 4 SHEET 1 1908 1840 WIRE 1504 1264 1504 1232 WIRE 768 1312 768 1248 WIRE 1504 1360 1504 1344 WIRE 1504 1360 1456 1360 WIRE 1648 1360 1504 1360 WIRE 1792 1360 1712 1360 WIRE 1872 1360 1792 1360 WIRE 1888 1360 1872 1360 WIRE 1504 1392 1504 1360 WIRE 1792 1408 1792 1360 WIRE 768 1440 768 1392 WIRE 768 1440 704 1440 WIRE 1072 1440 1040 1440 WIRE 1120 1440 1072 1440 WIRE 1264 1440 1200 1440 WIRE 1344 1440 1328 1440 WIRE 1360 1440 1344 1440 WIRE 1440 1440 1360 1440 WIRE 704 1456 704 1440 WIRE 768 1488 768 1440 WIRE 1040 1488 1040 1440 WIRE 1360 1488 1360 1440 WIRE 1504 1504 1504 1488 WIRE 1504 1504 1456 1504 WIRE 1584 1504 1504 1504 WIRE 1680 1504 1648 1504 WIRE 1504 1520 1504 1504 WIRE 1792 1536 1792 1488 WIRE 1680 1568 1680 1504 WIRE 1040 1616 1040 1568 WIRE 1360 1616 1360 1568 WIRE 768 1632 768 1568 WIRE 1504 1648 1504 1600 FLAG 1504 1232 VCC FLAG 1504 1648 VEE FLAG 704 1456 0 FLAG 768 1248 VCC FLAG 768 1632 VEE FLAG 1456 1360 C FLAG 1456 1504 E FLAG 1680 1568 0 FLAG 1792 1536 0 FLAG 1872 1360 OUT FLAG 1360 1616 0 FLAG 1040 1616 0 FLAG 1072 1440 S FLAG 1344 1440 IN SYMBOL voltage 768 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 768 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 1776 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 res 1216 1456 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName Rs SYMATTR Value 10k SYMBOL voltage 1040 1472 R0 SYMATTR Value2 AC 10mV 0 SYMATTR InstName Vs SYMATTR Value SINE(0V 10mV 1kHz) TEXT 1088 1816 Left 2 !.TRAN 50us 8ms 5ms 50us