Version 4 SHEET 1 880 680 WIRE 96 0 -96 0 WIRE 240 0 96 0 WIRE 448 0 240 0 WIRE 800 0 448 0 WIRE 240 16 240 0 WIRE 96 96 96 0 WIRE 448 128 448 0 WIRE -176 160 -240 160 WIRE 0 160 -112 160 WIRE 48 160 0 160 WIRE 384 176 336 176 WIRE -96 192 -96 0 WIRE 0 192 0 160 WIRE -240 208 -240 160 WIRE 96 224 96 192 WIRE 176 224 96 224 WIRE 240 224 240 96 WIRE 336 224 336 176 WIRE 336 224 320 224 WIRE 352 224 336 224 WIRE 448 240 448 224 WIRE 576 240 448 240 WIRE 0 272 -96 272 WIRE 96 272 96 224 WIRE 240 272 240 224 WIRE 448 272 448 240 WIRE 640 288 640 240 WIRE 0 304 0 272 FLAG 0 384 0 FLAG 96 352 0 FLAG 240 352 0 FLAG 448 352 0 FLAG -240 288 0 FLAG 800 80 0 FLAG 640 368 0 SYMBOL njf 48 96 R0 SYMATTR InstName J1 SYMATTR Value J310 SYMBOL npn 384 128 R0 SYMATTR InstName Q1 SYMATTR Value 2N5109 SYMBOL res -16 176 R0 SYMATTR InstName R1 SYMATTR Value 1meg SYMBOL res -16 288 R0 SYMATTR InstName R2 SYMATTR Value 1meg SYMBOL res -112 176 R0 SYMATTR InstName R3 SYMATTR Value 1meg SYMBOL res 80 256 R0 SYMATTR InstName R4 SYMATTR Value 680 SYMBOL res 224 256 R0 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL res 224 0 R0 SYMATTR InstName R6 SYMATTR Value 2200 SYMBOL res 432 256 R0 SYMATTR InstName R7 SYMATTR Value 220 SYMBOL voltage 800 -16 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL voltage -240 192 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V2 SYMATTR Value SINE(0 100µ 1000) SYMBOL cap 576 256 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value 100n SYMBOL cap 176 240 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value 100n SYMBOL res 624 272 R0 SYMATTR InstName R8 SYMATTR Value 50 SYMBOL res 224 240 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R9 SYMATTR Value 47 SYMBOL cap -176 176 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 10p TEXT -184 -96 Left 2 !.ac oct 1001 1000 100000000