Version 4 SHEET 1 2344 1936 WIRE 400 1232 304 1232 WIRE 528 1232 400 1232 WIRE 304 1248 304 1232 WIRE 528 1248 528 1232 WIRE 400 1312 400 1232 WIRE 528 1344 528 1328 WIRE -32 1360 -160 1360 WIRE 80 1360 -32 1360 WIRE 160 1360 80 1360 WIRE 208 1360 160 1360 WIRE 304 1360 304 1328 WIRE 304 1360 272 1360 WIRE 336 1360 304 1360 WIRE -160 1392 -160 1360 WIRE -32 1392 -32 1360 WIRE 304 1392 304 1360 WIRE 160 1424 160 1360 WIRE 80 1456 80 1360 WIRE -160 1488 -160 1456 WIRE -32 1488 -32 1456 WIRE 304 1488 304 1472 WIRE 160 1520 160 1488 WIRE 224 1520 160 1520 WIRE 400 1520 400 1408 WIRE 400 1520 288 1520 WIRE 160 1536 160 1520 WIRE 400 1536 400 1520 WIRE 80 1616 80 1536 WIRE 160 1616 160 1600 WIRE 400 1632 400 1616 FLAG 400 1632 0 FLAG 528 1344 0 FLAG 160 1616 0 FLAG 80 1616 0 FLAG -32 1488 0 FLAG -160 1488 0 FLAG 304 1488 0 FLAG 80 1360 X SYMBOL npn 336 1312 R0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL res 384 1520 R0 SYMATTR InstName R3 SYMATTR Value 8K SYMBOL cap 272 1344 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C1 SYMATTR Value 100p SYMBOL voltage 528 1232 R0 SYMATTR InstName V1 SYMATTR Value 9 SYMBOL ind 96 1552 R180 WINDOW 0 8 84 Right 0 WINDOW 3 1 29 Right 0 SYMATTR InstName L1 SYMATTR Value 100µ SYMBOL cap 144 1424 R0 SYMATTR InstName C3 SYMATTR Value 100p SYMBOL cap 144 1536 R0 SYMATTR InstName C4 SYMATTR Value 100p SYMBOL cap 288 1504 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C5 SYMATTR Value 500p SYMBOL diode -48 1392 R0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL diode -176 1456 M180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res 288 1232 R0 SYMATTR InstName R1 SYMATTR Value 100K SYMBOL res 288 1376 R0 SYMATTR InstName R2 SYMATTR Value 100K TEXT 544 1472 Left 0 !.tran 0 175u 0 10n startup TEXT 544 1584 Left 0 !.meas period trig V(x)=0 rise=300 targ V(x)=0 rise=400\n.meas freq param 100/period TEXT 544 1536 Left 0 !.step temp -55 125 20