83 lines
2.2 KiB
Plaintext
83 lines
2.2 KiB
Plaintext
Version 4
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SHEET 1 3088 1688
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WIRE 1888 912 1792 912
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WIRE 2000 912 1888 912
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WIRE 1792 928 1792 912
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WIRE 2000 928 2000 912
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WIRE 1888 976 1888 912
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WIRE 1792 1024 1792 1008
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WIRE 2000 1024 2000 1008
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WIRE 2064 1024 2000 1024
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WIRE 2160 1024 2128 1024
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WIRE 2240 1024 2160 1024
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WIRE 2160 1040 2160 1024
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WIRE 2000 1056 2000 1024
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WIRE 1792 1104 1568 1104
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WIRE 1888 1104 1888 1056
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WIRE 1888 1104 1856 1104
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WIRE 1936 1104 1888 1104
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WIRE 1568 1120 1568 1104
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WIRE 1888 1120 1888 1104
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WIRE 2160 1136 2160 1120
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WIRE 2000 1184 2000 1152
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WIRE 2096 1184 2000 1184
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WIRE 2000 1200 2000 1184
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WIRE 1568 1216 1568 1200
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WIRE 1888 1216 1888 1200
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WIRE 2096 1216 2096 1184
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WIRE 2000 1296 2000 1280
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WIRE 2096 1296 2096 1280
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FLAG 1792 1024 0
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FLAG 1568 1216 0
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FLAG 2240 1024 OUT
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FLAG 2000 1296 0
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FLAG 1888 1216 0
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FLAG 2096 1296 0
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FLAG 2160 1136 0
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SYMBOL voltage 1792 912 R0
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SYMATTR InstName V2
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SYMATTR Value 15
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SYMBOL npn 1936 1056 R0
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SYMATTR InstName Q1
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SYMATTR Value 2N2222
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SYMBOL res 1984 912 R0
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SYMATTR InstName R3
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SYMATTR Value 1K
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SYMBOL res 1984 1184 R0
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SYMATTR InstName R5
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SYMATTR Value 100
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SYMBOL res 1872 960 R0
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SYMATTR InstName R1
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SYMATTR Value 75K
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SYMBOL res 1872 1104 R0
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SYMATTR InstName R2
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SYMATTR Value 10K
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SYMBOL cap 1856 1088 R90
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WINDOW 0 0 32 VBottom 2
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WINDOW 3 32 32 VTop 2
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SYMATTR InstName C1
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SYMATTR Value .1µ
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SYMBOL cap 2080 1216 R0
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SYMATTR InstName C2
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SYMATTR Value 10µ
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SYMBOL res 2144 1024 R0
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SYMATTR InstName R4
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SYMATTR Value 100K
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SYMBOL cap 2128 1008 R90
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WINDOW 0 0 32 VBottom 2
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WINDOW 3 32 32 VTop 2
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SYMATTR InstName C3
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SYMATTR Value 1µ
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SYMBOL voltage 1568 1104 R0
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WINDOW 123 40 57 Left 2
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WINDOW 39 22 97 Left 2
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SYMATTR Value2 AC 1
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SYMATTR SpiceLine Rser=1K
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SYMATTR InstName V1
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SYMATTR Value ""
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TEXT 2120 1336 Left 2 !.noise V(out) V1 oct 10 1K 100K
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TEXT 1480 1336 Left 2 ;To plot NF vs. Frequency:\n 10*log10(V(inoise)*V(inoise)/(4*k*300.15*1K))\n Note that the units are dB but will be labeled V/sqrt(Hz)\n If you add the line\n .func NF(R) 10*log10(V(inoise)*V(inoise)/(4*k*300.15*R))\n to your plot.defs file, then you can conveniently plot the quantity NF(1K)
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TEXT 1624 1240 Top 2 ;1K Source Impedance
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TEXT 1952 1504 Top 1 ;This example schematic is supplied for informational/educational purposes only.
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RECTANGLE Normal 1776 1280 1488 1072 2
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