Version 4.1 SHEET 1 2476 680 WIRE 1568 -48 1264 -48 WIRE 1760 -48 1568 -48 WIRE 1872 -48 1760 -48 WIRE 240 -32 0 -32 WIRE 336 -32 240 -32 WIRE 0 -16 0 -32 WIRE 1568 -16 1568 -48 WIRE 1760 -16 1760 -48 WIRE 336 0 336 -32 WIRE 1872 0 1872 -48 WIRE 1568 96 1568 64 WIRE 1760 96 1760 64 WIRE 1760 96 1568 96 WIRE 1872 96 1872 64 WIRE 1872 96 1760 96 WIRE 0 112 0 64 WIRE 1568 208 1568 96 WIRE 1632 208 1568 208 WIRE 1712 208 1632 208 WIRE 2000 208 1776 208 WIRE 2016 208 2000 208 WIRE 336 224 336 80 WIRE 400 224 336 224 WIRE 480 224 400 224 WIRE 768 224 544 224 WIRE 784 224 768 224 WIRE 1568 224 1568 208 WIRE 336 240 336 224 WIRE 1152 272 1104 272 WIRE 1248 272 1152 272 WIRE 1408 272 1328 272 WIRE 1504 272 1408 272 WIRE -96 288 -144 288 WIRE 0 288 -96 288 WIRE 176 288 80 288 WIRE 272 288 176 288 WIRE 2000 336 2000 208 WIRE 768 352 768 224 WIRE 1568 352 1568 320 WIRE 1616 352 1568 352 WIRE 1760 352 1616 352 WIRE 336 368 336 336 WIRE 384 368 336 368 WIRE 528 368 384 368 WIRE 1104 384 1104 272 WIRE -144 400 -144 288 WIRE 1568 416 1568 352 WIRE 336 432 336 368 WIRE 1104 544 1104 464 WIRE 1488 544 1104 544 WIRE 1568 544 1568 496 WIRE 1568 544 1488 544 WIRE 2000 544 2000 416 WIRE 2000 544 1568 544 WIRE 2080 544 2000 544 WIRE -144 560 -144 480 WIRE 256 560 -144 560 WIRE 336 560 336 512 WIRE 336 560 256 560 WIRE 768 560 768 432 WIRE 768 560 336 560 WIRE 848 560 768 560 WIRE 1488 592 1488 544 WIRE 256 608 256 560 FLAG 784 224 out FLAG -96 288 input FLAG 240 -32 Vsupply FLAG 256 608 0 FLAG 176 288 base FLAG 400 224 collector FLAG 384 368 emmitter FLAG 0 112 0 FLAG 2016 208 out_2 FLAG 1152 272 input_2 FLAG 1264 -48 Vsupply FLAG 1488 592 0 FLAG 1408 272 base_2 FLAG 1632 208 collector_2 FLAG 1616 352 emmitter_2 SYMBOL npn 272 240 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222 SYMBOL cap 544 208 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL res 320 -16 R0 SYMATTR InstName R_collector SYMATTR Value 20k SYMBOL res 320 416 R0 SYMATTR InstName R_emmitter_1 SYMATTR Value 10R SYMBOL voltage 0 -32 R0 WINDOW 3 24 44 Left 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1_supply SYMATTR Value 15V SYMBOL voltage -144 384 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value SINE(0 1 100k) SYMBOL res 752 336 R0 SYMATTR InstName R3 SYMATTR Value 1Meg SYMBOL res -16 272 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 100R SYMBOL npn 1504 224 R0 SYMATTR InstName Q2 SYMATTR Value 2N2222 SYMBOL cap 1776 192 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL res 1552 -32 R0 SYMATTR InstName R_collector1 SYMATTR Value 20k SYMBOL res 1552 400 R0 SYMATTR InstName R_emmitter_2 SYMATTR Value 10R SYMBOL voltage 1104 368 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value SINE(0 1 100k) SYMBOL res 1984 320 R0 SYMATTR InstName R2 SYMATTR Value 1Meg SYMBOL ind 1744 -32 R0 SYMATTR InstName L2 SYMATTR Value 100µ SYMATTR SpiceLine Rser=1m SYMBOL cap 1856 0 R0 SYMATTR InstName C4 SYMATTR Value 25.4n SYMBOL res 1232 256 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 100R TEXT 704 -632 Left 5 ;Class C amplifier TEXT -128 624 Left 2 !.tran 0 300u 0 TEXT 208 -544 Left 4 ;instructions TEXT 200 -496 Left 2 ;click on run\nthen click on "input" to plot it.\nthen click on the plot window then on plot settings / add plot pane\nthen click on "base" to plot it\nthen click on the plot window and plot settings/add plot pane\nthen click on "collector" to plot it\nthen click on the plot window and plot settings/add plot pane\nthen click on "output" to plot it\nthen click on the plot window and plot settings/add plot pane\nmove over to the circuit on the right and click on collector_2 to plot it. TEXT 680 472 Left 2 ;R3 is to give the node "out"\na Dc path to ground.\nSpice requires this. TEXT 1912 456 Left 2 ;R3 is to give the node "out"\na Dc path to ground.\nSpice requires this. TEXT 1144 -472 Left 4 ;Description TEXT 1168 -416 Left 2 ;In the circuit on the left you can clearly see that the transistor \nis operated as a switch, \nas V(collector) is something like a square wave. \nin the circuit on the right the LC tuned circuit selects the 100khz\ncomponent from this square wave.