Version 4 SHEET 1 2280 1480 WIRE -384 -128 -576 -128 WIRE -96 -128 -304 -128 WIRE -576 -16 -576 -128 WIRE -368 -16 -576 -16 WIRE -96 -16 -96 -128 WIRE -96 -16 -304 -16 WIRE -848 96 -912 96 WIRE -784 96 -848 96 WIRE -576 96 -576 -16 WIRE -576 96 -704 96 WIRE -512 96 -576 96 WIRE -384 96 -512 96 WIRE -96 96 -96 -16 WIRE -96 96 -288 96 WIRE 16 96 -96 96 WIRE -288 128 -288 96 WIRE -384 144 -384 96 WIRE -336 144 -384 144 WIRE -912 160 -912 96 WIRE -336 192 -384 192 WIRE -912 272 -912 240 WIRE -384 272 -384 192 WIRE -384 272 -912 272 WIRE -288 272 -288 208 WIRE -288 272 -384 272 WIRE -912 304 -912 272 FLAG -912 304 0 FLAG 16 96 OUT FLAG -848 96 IN FLAG -512 96 INV- SYMBOL res -688 80 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL voltage -912 144 R0 SYMATTR InstName V1 SYMATTR Value PWL(0 0V 1ms 0V 1.001ms 1mV 2s 1mV) SYMATTR Value2 AC 1 0 SYMBOL e -288 112 R0 SYMATTR InstName E1 SYMATTR Value -1e6 SYMBOL cap -304 -32 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 10µF SYMBOL res -288 -144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value {R_value} TEXT -528 360 Left 2 !.AC DEC 5 1mHz 1kHz TEXT -632 416 Left 2 !.step param R_value LIST 1000Meg 1Meg 100k TEXT -760 472 Left 2 ;R2 is set as a global variable by specifying the value of R2 as {R_value}