Version 4 SHEET 1 1732 1364 WIRE -704 928 -704 880 WIRE -704 1072 -704 1008 WIRE -576 880 -704 880 WIRE -432 880 -576 880 WIRE -432 944 -432 880 WIRE -432 1072 -432 1024 WIRE -336 880 -432 880 WIRE -336 944 -336 880 WIRE -336 1072 -336 1008 WIRE -320 1072 -336 1072 WIRE -256 880 -336 880 WIRE -144 880 -176 880 WIRE -64 880 -80 880 WIRE -64 944 -64 880 WIRE -64 1072 -64 1024 WIRE -48 880 -64 880 WIRE 112 928 112 704 WIRE 112 1072 112 928 WIRE 160 704 112 704 WIRE 160 720 160 704 WIRE 160 880 32 880 WIRE 160 880 160 800 WIRE 160 928 112 928 WIRE 208 864 208 832 WIRE 208 960 208 944 WIRE 304 736 208 736 WIRE 304 832 208 832 WIRE 304 832 304 736 WIRE 304 864 304 832 WIRE 304 960 304 944 WIRE 400 736 304 736 WIRE 400 832 304 832 WIRE 400 864 400 832 WIRE 400 960 400 944 WIRE 448 720 448 704 WIRE 448 880 448 800 WIRE 528 704 448 704 WIRE 528 928 448 928 WIRE 528 928 528 704 WIRE 528 1072 528 928 WIRE 624 880 448 880 WIRE 624 928 624 880 WIRE 624 1072 624 992 WIRE 912 880 624 880 WIRE 1040 880 912 880 WIRE 1040 928 1040 880 WIRE 1040 1072 1040 1008 FLAG -704 1072 0 FLAG 400 960 0 FLAG 208 960 0 FLAG 208 784 0 FLAG 400 784 0 FLAG 304 960 0 FLAG 112 1072 0 FLAG 528 1072 0 FLAG 1040 1072 0 FLAG -336 1072 0 FLAG 624 1072 0 FLAG -432 1072 0 FLAG 912 880 out1 FLAG -576 880 in1 FLAG -64 1072 0 SYMBOL res 48 864 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value .66 SYMBOL g 208 848 R0 SYMATTR InstName G5 SYMATTR Value 1 SYMBOL g 400 848 M0 WINDOW 0 -10 9 Right 0 WINDOW 3 -15 96 Right 0 SYMATTR InstName G6 SYMATTR Value {1/N} SYMBOL g 160 704 M0 WINDOW 0 -10 10 Right 0 WINDOW 3 -16 104 Right 0 SYMATTR InstName G7 SYMATTR Value 1 SYMBOL g 448 704 R0 WINDOW 0 13 18 Left 0 WINDOW 3 17 95 Left 0 SYMATTR InstName G8 SYMATTR Value {1/N} SYMBOL res 288 848 R0 SYMATTR InstName R3 SYMATTR Value 1G SYMBOL res 1024 912 R0 SYMATTR InstName Rload1 SYMATTR Value 1Meg SYMBOL cap -352 944 R0 WINDOW 0 30 3 Left 0 WINDOW 3 36 59 Left 0 SYMATTR InstName Cinput1 SYMATTR Value 61.6n SYMBOL cap 608 928 R0 SYMATTR InstName Coutput1 SYMATTR Value 11.4p SYMBOL ind -160 864 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L1 SYMATTR Value .94m SYMBOL cap -80 864 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C1 SYMATTR Value 2.79n SYMBOL current -704 1008 R180 WINDOW 0 -38 92 Left 0 WINDOW 3 -177 -5 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I1 SYMATTR Value SINE(0 1 {f0} 0 0) SYMBOL res -448 928 R0 WINDOW 0 41 39 Left 0 SYMATTR InstName R4 SYMATTR Value 25k SYMBOL res -80 928 R0 SYMATTR InstName R6 SYMATTR Value 1G TEXT -768 432 Left 0 !.tran 0 10000u 0 0.2u TEXT -768 520 Left 0 ;C(input) = 61.6 nF\nC(out) = 11.4 pF\nn = 35\nseries R = 0.66 ohm\nseries L = 0.94 mH\nseries C = 2.79 nF TEXT -768 464 Left 0 !.options plotwinsize=0 TEXT -768 392 Left 0 ;.step param f0 105k 115k 1k TEXT -768 344 Left 0 !.param f0=109.7k; Series resonance with current driver TEXT 80 640 Left 0 ;An ideal transformer. TEXT 192 1000 Left 0 !.param N=35 ; turns ratio TEXT -312 1048 Left 0 ;-j26 Ohm @ 100kHz TEXT -456 640 Left 0 ;Resonance frequeny: 1/(2*pi*sqrt(L*C))\n \nC= 1/( 1/C1 + 1/Cinput + 1/(N*N*Coutput1) )\n \nf0 = 109.66kHz TEXT -32 520 Left 0 ;Using A Current Source RECTANGLE Normal 576 1016 48 608 RECTANGLE Normal 752 1152 -496 560 1