initial commit

examples/jigs/2ndOrderAllpass.asc

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+Version 4
+SHEET 1 1060 680
+WIRE -784 -176 -848 -176
+WIRE -672 -176 -720 -176
+WIRE -80 -176 -672 -176
+WIRE -448 -128 -624 -128
+WIRE -256 -128 -448 -128
+WIRE -32 -128 -208 -128
+WIRE 112 -128 -32 -128
+WIRE 224 -128 112 -128
+WIRE 384 -128 272 -128
+WIRE 448 -128 384 -128
+WIRE 480 -128 448 -128
+WIRE 608 -128 544 -128
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+WIRE -672 32 -672 -16
+WIRE -624 32 -624 0
+WIRE -448 32 -448 0
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+WIRE -80 32 -80 -16
+WIRE -32 32 -32 0
+WIRE 112 32 112 0
+WIRE 224 32 224 0
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+WIRE 384 32 384 16
+FLAG -624 32 0
+FLAG -672 32 0
+FLAG -448 32 0
+FLAG -32 32 0
+FLAG -80 32 0
+FLAG -256 32 0
+FLAG 112 32 0
+FLAG -208 32 0
+FLAG -672 -176 1
+FLAG 224 32 0
+FLAG 272 32 0
+FLAG 384 32 0
+FLAG 448 -128 2
+SYMBOL g -624 -96 R0
+SYMATTR InstName G1
+SYMATTR Value {2/R1}
+SYMBOL ind -464 -96 R0
+WINDOW 0 49 27 Left 2
+WINDOW 3 44 58 Left 2
+WINDOW 39 46 89 Left 2
+WINDOW 123 45 122 Left 2
+SYMATTR InstName L2
+SYMATTR Value {L1}
+SYMATTR SpiceLine Cpar={C1}
+SYMATTR Value2 Rpar={R1}
+SYMBOL g -32 -96 R0
+SYMATTR InstName G2
+SYMATTR Value {1/R1}
+SYMBOL g2 -208 32 M180
+WINDOW 0 34 74 Left 2
+WINDOW 3 38 32 Left 2
+SYMATTR InstName G3
+SYMATTR Value {1/R1}
+SYMBOL res 96 -96 R0
+SYMATTR InstName R1
+SYMATTR Value {R1}
+SYMBOL Misc\\jumper -752 -240 M0
+SYMATTR InstName X1
+SYMBOL g 272 -80 R0
+SYMATTR InstName G4
+SYMATTR Value {10*H}
+SYMBOL res 368 -80 R0
+SYMATTR InstName R2
+SYMATTR Value .1
+SYMBOL Misc\\jumper 512 -192 R0
+SYMATTR InstName X2
+TEXT 408 -256 Left 2 ;.param f0=1k Q=.7
+TEXT -448 -256 Left 2 ;Most efficient LTSPICE implementation for f0 and Q set by parameters >>>
+TEXT 248 120 Left 2 !.param R1=1k
+TEXT 248 168 Left 2 !.param C1=Q/(2*pi*f0*R1)
+TEXT 248 208 Left 2 !.param L1= 1/(C1*(2*pi*f0)**2)
+TEXT -800 -192 Right 2 ;Vin
+TEXT 560 -144 Left 2 ;Vout