transient noise example added

ChangeLog

@@ -1,3 +1,6 @@
+2010-11-28 Holger Vogt
+ * transient noise example added
+
 2010-11-27 Holger Vogt
  * transient noise simulation added to vsrc:
 M configure.ac

examples/transient-noise/README

@@ -0,0 +1,12 @@
+* noi-ring51-demo
+ring oszillator with one noisy inverter
+(requires 45min on a i7 860)
+
+* noi-sc-tr
+noise source sampled
+
+* noise_vnoi
+just a few 1/f and white noise sources
+
+* shot_ng
+emulation of shot noise in a diode

examples/transient-noise/noise_vnoi.cir

@@ -0,0 +1,28 @@
+* Random noise test
+* internal noise source
+
+* one over f
+VNOI1 1 0 DC 0 TRNOISE(0n 1n 1.7 1n)
+VNOI2 2 0 DC 0 TRNOISE(0n 1n 1.4 1n)
+VNOI3 3 0 DC 0 TRNOISE(0n 1n 1.0 1n)
+VNOI4 4 0 DC 0 TRNOISE(0n 1n 0.5 1n)
+* white
+VNOI5 5 0 DC 0 TRNOISE(1n 1n 0 0)
+* both
+VNOI6 6 0 DC 0 TRNOISE(1n 1n 1 1n)
+
+* 250000 sample points
+.tran 1n 250u
+
+.control
+run
+plot v(1) v(2) v(3) v(4) v(5) v(6)
+plot v(1) v(2) v(3) v(4) v(5) v(6) xlimit 102.0u 102.01u ylimit -3n 3n
+linearize
+fft v(1) v(2) v(3) v(4) v(5) v(6)
+plot mag(v(1)) mag(v(2)) mag(v(3)) mag(v(4)) mag(v(5)) loglog xlimit 1e3 1e9
+plot mag(v(6)) loglog xlimit 1e3 1e9
+.endc
+
+.end
+