Version 4 SHEET 1 3656 2392 WIRE 2128 912 1968 912 WIRE 2384 912 2208 912 WIRE 2608 912 2448 912 WIRE 3344 912 3088 912 WIRE 3584 912 3408 912 WIRE 1968 928 1968 912 WIRE 2384 928 2384 912 WIRE 2448 928 2448 912 WIRE 2608 928 2608 912 WIRE 3088 928 3088 912 WIRE 3344 928 3344 912 WIRE 3408 928 3408 912 WIRE 3584 928 3584 912 WIRE 2608 1008 2608 992 WIRE 2800 1008 2608 1008 WIRE 3088 1008 3088 992 WIRE 3088 1008 2944 1008 WIRE 1968 1024 1968 1008 WIRE 2384 1024 2384 1008 WIRE 2448 1024 2448 1008 WIRE 2608 1024 2608 1008 WIRE 2800 1024 2800 1008 WIRE 2944 1024 2944 1008 WIRE 3088 1024 3088 1008 WIRE 3344 1024 3344 1008 WIRE 3408 1024 3408 1008 WIRE 3584 1024 3584 1008 WIRE 2608 1104 2608 1088 WIRE 3088 1104 3088 1088 WIRE 2800 1120 2800 1104 WIRE 2880 1120 2800 1120 WIRE 2944 1120 2944 1104 WIRE 2944 1120 2880 1120 WIRE 2880 1136 2880 1120 WIRE 2880 1232 2880 1216 FLAG 1968 1024 0 FLAG 2608 1104 0 FLAG 2448 1024 0 FLAG 3088 1104 0 FLAG 3344 1024 0 FLAG 2384 1024 0 FLAG 3408 1024 0 FLAG 3584 1024 0 FLAG 2880 1232 0 FLAG 3584 912 OUT FLAG 1968 912 IN SYMBOL voltage 1968 912 R0 SYMATTR InstName V2 SYMATTR Value sine(10 .01 10MEG) ac 1 SYMBOL varactor 2592 1088 M180 WINDOW 0 28 55 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value MV2201 SYMBOL varactor 2592 928 R0 WINDOW 3 24 59 Left 2 SYMATTR Value MV2201 SYMATTR InstName D2 SYMBOL ind2 2464 1024 R180 WINDOW 0 -2 77 Right 2 WINDOW 3 -2 38 Right 2 SYMATTR InstName L2 SYMATTR Value {Lpri} SYMBOL res 2784 1008 R0 SYMATTR InstName R1 SYMATTR Value 1Meg SYMBOL varactor 3072 1088 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D3 SYMATTR Value MV2201 SYMBOL varactor 3072 928 R0 SYMATTR InstName D4 SYMATTR Value MV2201 SYMBOL ind2 3328 1024 M180 WINDOW 0 -3 70 Right 2 WINDOW 3 -1 39 Right 2 SYMATTR InstName L3 SYMATTR Value {Lpri} SYMBOL res 2928 1008 R0 SYMATTR InstName R2 SYMATTR Value 1Meg SYMBOL ind2 3424 912 M0 WINDOW 0 -4 42 Right 2 WINDOW 3 -3 76 Right 2 SYMATTR InstName L4 SYMATTR Value {Lsec} SYMBOL ind2 2368 1024 M180 WINDOW 0 -9 79 Right 2 WINDOW 3 -7 37 Right 2 SYMATTR InstName L1 SYMATTR Value {Lsec} SYMBOL res 3568 912 R0 SYMATTR InstName R3 SYMATTR Value {Z} SYMBOL res 2224 896 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value {Z} SYMBOL voltage 2880 1120 R0 SYMATTR InstName V1 SYMATTR Value {Vtune} TEXT 3160 1232 Left 2 !.ac oct 100 1Meg 50Meg TEXT 2416 912 Bottom 2 !K3 L1 L2 .95 TEXT 3376 888 Center 2 !K4 L3 L4 .95 TEXT 2336 1184 Left 2 !.params Z=75 TEXT 2336 1216 Left 2 !.params Kcup=.08 TEXT 2336 1248 Left 2 !.params Lpri=100µ Lsec=.1µ TEXT 2880 968 Center 2 !Kcup1 L2 L3 {Kcup} TEXT 2864 1344 Top 1 ;This example schematic is supplied for informational/educational purposes only. TEXT 3160 1272 Left 2 !.step param Vtune list 0 5 20