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1/f noise current, random current and voltage sources 

command 'alter'
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Holger Vogt 2018-08-23 16:28:54 +02:00
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examples/transient-noise/simple-noise.cir Normal file
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test of isrc trnoise and trrandom isrc, vsrc
* 1/f noise current
i1 1 2 DC 0 TRNOISE(0.05 8p 0 1.0 0.001)
i2 2 0 DC 0 TRNOISE(0.05 8p 0 1.0 0.001)
r1 1 2 1
r2 2 0 1
* gaussian (type=2) noise
i3 3 0 DC 0 TRRANDOM(2 8p 0 1.0 0.01)
R3 3 0 1
v4 4 0 DC 0 TRRANDOM(2 8p 0 1.0 0.01)
*R4 4 0 1
.tran 8p 200n
.control
run
alter @i1[trnoise] = [ 0.1 8p 0 1.5 0.002 ] $ more noise
alter @i2[trnoise] = [ 0.1 8p 0 1.5 0.002 ] $ more noise
alter @i3[trrandom] = [ 2 8p 0 1.5 0.02 ] $ more noise
alter @v4[trrandom] = [ 2 8p 0 1.5 0.02 ] $ more noise
run
plot tran2.v(1) tran1.v(1)
plot tran2.v(3) tran1.v(3) ylimit -6 6
plot tran2.v(4) tran1.v(4) ylimit -6 6
.endc
.end