Change 'dcvar' definition for resistors

Lenty · Jan 24, 2024 · 1946363 · 1946363
1 parent 453aef0
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diff --git a/SLiCAP/SLiCAPexecute/SLiCAPexecute.py b/SLiCAP/SLiCAPexecute/SLiCAPexecute.py
@@ -740,7 +740,7 @@ def addDCvarSources(instr, dcSolution):
                         Vneg = 0
                     DCcurrent = sp.simplify((Vpos - Vneg)/instr.circuit.elements[el].params['value'])
                 if DCcurrent != 0:
-                    errorCurrentVariance = instr.circuit.elements[el].params['dcvar']/instr.circuit.elements[el].params['value']**2 * DCcurrent**2
+                    errorCurrentVariance = instr.circuit.elements[el].params['dcvar'] * DCcurrent**2
                     newCurrentSource = element()
                     newCurrentSource.refDes          = 'I_dcvar_' + refDes
                     newCurrentSource.params['dcvar'] = errorCurrentVariance

diff --git a/docs/_build/doctrees/environment.pickle b/docs/_build/doctrees/environment.pickle
diff --git a/docs/_build/doctrees/syntax/devices.doctree b/docs/_build/doctrees/syntax/devices.doctree
diff --git a/docs/_build/doctrees/userguide/dcvar.doctree b/docs/_build/doctrees/userguide/dcvar.doctree
diff --git a/docs/_build/html/.buildinfo b/docs/_build/html/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: f8da23d78365ebac63520ecfdc0f727e
+config: e80b7deb56dfa917b5451b9d11454ada
 tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/docs/_build/html/_sources/syntax/devices.rst.txt b/docs/_build/html/_sources/syntax/devices.rst.txt
@@ -1119,19 +1119,21 @@ Model R
 Parameters model R
 ~~~~~~~~~~~~~~~~~~
 
-		+-----------+-------------------+---------+---------+
-		| name      | description       | default | Laplace |
-		+===========+===================+=========+=========+
-		| value     | resistance        | 1       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| dcvar     | variance          | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| noisetemp | noise temperature | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| noiseflow | variance          | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| dcvar     | variance          | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
+		+-----------+-----------------------------+---------+---------+
+		| name      | description                 | default | Laplace |
+		+===========+=============================+=========+=========+
+		| value     | resistance                  | 1       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| dcvar     | variance                    | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| dcvarlot  | variance of lot             | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| noisetemp | noise temperature           | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| noiseflow | corner frequency 1/f noise  | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| dcvar     | variance                    | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
 
 .. _type r:
 
@@ -1147,19 +1149,21 @@ Model r
 Parameters model r
 ~~~~~~~~~~~~~~~~~~
 
-		+-----------+-------------------+---------+---------+
-		| name      | description       | default | Laplace |
-		+===========+===================+=========+=========+
-		| value     | resistance        | 1       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| dcvar     | variance          | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| noisetemp | noise temperature | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| noiseflow | variance          | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
-		| dcvar     | variance          | 0       | FALSE   | 
-		+-----------+-------------------+---------+---------+
+		+-----------+-----------------------------+---------+---------+
+		| name      | description                 | default | Laplace |
+		+===========+=============================+=========+=========+
+		| value     | resistance                  | 1       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| dcvar     | variance                    | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| dcvarlot  | variance of lot             | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| noisetemp | noise temperature           | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| noiseflow | corner frequency 1/f noise  | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
+		| dcvar     | variance                    | 0       | FALSE   | 
+		+-----------+-----------------------------+---------+---------+
 
 Examples
 ~~~~~~~~

diff --git a/docs/_build/html/_sources/userguide/dcvar.rst.txt b/docs/_build/html/_sources/userguide/dcvar.rst.txt
@@ -16,14 +16,19 @@ All of the above can be performed symbolically or numerically.
 
 Tolerances of resistors and independent DC sources can be defined by setting their DC variance attribute *'dcvar'* to a nonzero value or expression.
 
-These variances must be defined in :math:`\left[ \Omega^2\right]` for resistors, in :math:`\left[ V^2\right]` for independent voltage sources, and in :math:`\left[ A^2\right]` for independent current sources.
+.. admonition:: Changed from version 1.8
+    :class: warning
+
+    The **variance of resistor values** are defined relative (the square of the relative standard deviation: :math:`\sigma=1\%` corresponds with dcvar = :math:`10^{-4}`).
+    The variance of voltage and current sources is defined absolute in :math:`[V^2]` or :math:`[A^2]`, respectively.
+
 
 .. code-block:: text
 
     "DCvar demo circuit"
-    R1 N1 N2 R value={R} dcvar={(sigma_R*R)^2}
-    I1 N1 N2 I value={I_DC} dcvar = {(sigma_I*I_DC)^2}
-    V1 N1 N2 0 value={V_DC} dcvar = {(sigma_V*V_DC)^2}
+    R1 N1 N2 R value={R} dcvar={(sigma_R)^2}
+    I1 N1 N2 I value={I_DC} dcvar = {(sigma_I)^2}
+    V1 N1 N2 0 value={V_DC} dcvar = {(sigma_V)^2}
     .param R=1k I_DC=1m V_DC=1 sigma_R=0.01 sigma_I=0.05 sigma_V=0.02
 
 It is not (yet) possible to define the variance of the gain of dependent (controlled) sources.

diff --git a/docs/_build/html/development/SLiCAPdevelopment.html b/docs/_build/html/development/SLiCAPdevelopment.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAP development &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAP development &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/index.html b/docs/_build/html/index.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAP Manual &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAP Manual &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -64,7 +64,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/introduction/SLiCAPandSED.html b/docs/_build/html/introduction/SLiCAPandSED.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAP and Structured Electronics Design &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAP and Structured Electronics Design &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/introduction/SLiCAPcontribute.html b/docs/_build/html/introduction/SLiCAPcontribute.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>How to contribute to SLiCAP &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>How to contribute to SLiCAP &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/introduction/SLiCAPintroduction.html b/docs/_build/html/introduction/SLiCAPintroduction.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAP introduction &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAP introduction &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/introduction/SLiCAPwhatWhyHow.html b/docs/_build/html/introduction/SLiCAPwhatWhyHow.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>What is SLiCAP &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>What is SLiCAP &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/objects.inv b/docs/_build/html/objects.inv
diff --git a/docs/_build/html/reference/SLiCAP.html b/docs/_build/html/reference/SLiCAP.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAP.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAP.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPconfig.html b/docs/_build/html/reference/SLiCAPconfig.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPconfig.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPconfig.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPdesignData.html b/docs/_build/html/reference/SLiCAPdesignData.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPdesignData.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPdesignData.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPexecute.html b/docs/_build/html/reference/SLiCAPexecute.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPexecute.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPexecute.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPhtml.html b/docs/_build/html/reference/SLiCAPhtml.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPhtml.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPhtml.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPini.html b/docs/_build/html/reference/SLiCAPini.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPini.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPini.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPinstruction.html b/docs/_build/html/reference/SLiCAPinstruction.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPinstruction.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPinstruction.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPlatex.html b/docs/_build/html/reference/SLiCAPlatex.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPlatex.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPlatex.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPlex.html b/docs/_build/html/reference/SLiCAPlex.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPlex.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPlex.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
               </div>
 
 

diff --git a/docs/_build/html/reference/SLiCAPmath.html b/docs/_build/html/reference/SLiCAPmath.html
@@ -7,7 +7,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-  <title>SLiCAPmath.py &mdash; SLiCAP 1.7.0 documentation</title>
+  <title>SLiCAPmath.py &mdash; SLiCAP 1.8.0 documentation</title>
 
 
 
@@ -65,7 +65,7 @@
 
 
               <div class="version">
-                1.7.0
+                1.8.0
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+Diff line change
@@ Expand Up / @@ -7,7 +7,7 @@ @@
       <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-      <title>SLiCAP development &mdash; SLiCAP 1.7.0 documentation</title>
+      <title>SLiCAP development &mdash; SLiCAP 1.8.0 documentation</title>
@@ Expand Down Expand Up / @@ -65,7 +65,7 @@ @@
                   <div class="version">
-.7.0
+.8.0
                   </div>
@@ Expand Down @@