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update to schematic tool

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This commit is contained in:
cjt
2012-02-04 10:26:47 -05:00
parent 17bcbb9401
commit 6f55bd55e2
2 changed files with 134 additions and 28 deletions
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74
js/schematic.js
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@@ -634,9 +634,10 @@ schematic = (function() {
// create a circuit from the netlist
var ckt = new cktsim.Circuit();
ckt.load_netlist(netlist);
return ckt;
if (ckt.load_netlist(netlist))
return ckt;
else
return null;
}
Schematic.prototype.dc_analysis = function() {
@@ -645,6 +646,7 @@ schematic = (function() {
this.redraw_background();
var ckt = this.extract_circuit();
if (ckt === null) return;
// run the analysis
this.operating_point = ckt.dc();
@@ -712,6 +714,7 @@ schematic = (function() {
Schematic.prototype.ac_analysis = function(npts,fstart,fstop,ac_source_name) {
// run the analysis
var ckt = this.extract_circuit();
if (ckt === null) return;
var results = ckt.ac(npts,fstart,fstop,ac_source_name);
// save a copy of the results for submission
@@ -731,11 +734,28 @@ schematic = (function() {
var y_values = []; // list of [color, result_array]
var probes = this.find_probes();
var probe_maxv = [];
var probe_color = [];
// Check for proble with near zero transfer function and warn
for (var i = probes.length - 1; i >= 0; --i) {
probe_color[i] = probes[i][0];
var label = probes[i][1];
var v = results[label];
probe_maxv[i] = array_max(v); // magnitudes always > 0
}
var all_max = array_max(probe_maxv);
for (var i = probes.length - 1; i >= 0; --i) {
if ((probe_maxv[i] / all_max) < 1.0e-10) {
alert('Near zero ac response, remove ' + probe_color[i] + ' probe');
return;
}
}
for (var i = probes.length - 1; i >= 0; --i) {
var color = probes[i][0];
var label = probes[i][1];
var v = results[label];
// convert values into dB relative to source amplitude
var v_max = 1;
for (var j = v.length - 1; j >= 0; --j)
@@ -774,6 +794,8 @@ schematic = (function() {
this.dialog('Transient Analysis',content,function(content) {
var sch = content.sch;
var ckt = sch.extract_circuit();
if (ckt === null) return;
// retrieve parameters, remember for next time
sch.tran_npts = content.fields[npts_lbl].value;
@@ -1943,25 +1965,27 @@ schematic = (function() {
var x1 = (index == 0) ? x_values[0] : x_values[index-1];
var x2 = x_values[index];
// for each plot, interpolate and output value at intersection with marker
c.textAlign = 'left';
var tx = graph.left_margin + 4;
var ty = graph.top_margin;
for (var plot = 0; plot < graph.y_values.length; plot++) {
var values = graph.y_values[plot][1];
if (x2 != undefined) {
// for each plot, interpolate and output value at intersection with marker
c.textAlign = 'left';
var tx = graph.left_margin + 4;
var ty = graph.top_margin;
for (var plot = 0; plot < graph.y_values.length; plot++) {
var values = graph.y_values[plot][1];
// interpolate signal value at graph_x using values[index-1] and values[index]
var y1 = (index == 0) ? values[0] : values[index-1];
var y2 = values[index];
var y = y1;
if (graph_x != x1) y += (graph_x - x1)*(y2 - y1)/(x2 - x1);
// interpolate signal value at graph_x using values[index-1] and values[index]
var y1 = (index == 0) ? values[0] : values[index-1];
var y2 = values[index];
var y = y1;
if (graph_x != x1) y += (graph_x - x1)*(y2 - y1)/(x2 - x1);
// annotate plot with value of signal at marker
c.fillStyle = element_style;
c.fillText('\u2588\u2588\u2588\u2588\u2588',tx-3,ty);
c.fillStyle = probe_colors_rgb[graph.y_values[plot][0]];
c.fillText(engineering_notation(y,3,false),tx,ty);
ty += 14;
// annotate plot with value of signal at marker
c.fillStyle = element_style;
c.fillText('\u2588\u2588\u2588\u2588\u2588',tx-3,ty);
c.fillStyle = probe_colors_rgb[graph.y_values[plot][0]];
c.fillText(engineering_notation(y,3,false),tx,ty);
ty += 14;
}
}
}
}
@@ -3086,7 +3110,8 @@ schematic = (function() {
this.add_connection(0,0); // +
this.add_connection(0,16); // -
this.add_connection(48,8); // output
this.bounding_box = [0,-8,48,24];
this.add_connection(24,32); // ground
this.bounding_box = [0,-8,48,32];
this.update_coords();
}
OpAmp.prototype = new Component();
@@ -3104,7 +3129,9 @@ schematic = (function() {
// inputs and output
this.draw_line(c,0,0,8,0);
this.draw_line(c,0,16,8,16);
this.draw_text(c,'gnd',37,18,property_size);
this.draw_line(c,40,8,48,8);
this.draw_line(c,24,16,24,32);
// + and -
this.draw_line(c,10,0,16,0);
this.draw_line(c,13,-3,13,3);
@@ -3176,6 +3203,9 @@ schematic = (function() {
source_functions = {
'dc': ['DC value'],
'impulse': ['Height',
'Width (secs)'],
'step': ['Initial value',
'Plateau value',
'Delay until step (secs)',