Spice Error Masseges

A

ali electronic

Guest
Circuit Maker uses spice.
What do following messages mean?!
Float overflow exception in simulation.
Warning: singular matrix: check nodes lakt1#branch and lakt1#branch
Warning: source stepping failed
doAnalyses: Matrix is singular
thanks
 
ali electronic wrote:
Circuit Maker uses spice.
What do following messages mean?!
Float overflow exception in simulation.
Warning: singular matrix: check nodes lakt1#branch and lakt1#branch
Warning: source stepping failed
doAnalyses: Matrix is singular
thanks
Click to expand...
You may have a floating node.

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.
 
On 14 Dec 2004 02:23:23 -0800, ali@vuetec.com (ali electronic) wrote:

Circuit Maker uses spice.
What do following messages mean?!
Float overflow exception in simulation.
Warning: singular matrix: check nodes lakt1#branch and lakt1#branch
Warning: source stepping failed
doAnalyses: Matrix is singular
thanks
Click to expand...
You most likely failed to include "ground", a node numbered 0 (zero).

Most "Spices" tend to give utterly meaningless error messages... just
like Windows ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
On 14 Dec 2004 02:23:23 -0800, ali@vuetec.com (ali electronic) wrote:

Circuit Maker uses spice.
What do following messages mean?!
Float overflow exception in simulation.
Warning: singular matrix: check nodes lakt1#branch and lakt1#branch
Warning: source stepping failed
doAnalyses: Matrix is singular
Click to expand...
"Matrix is singular" -- plus the 'node' being the branch current
equation associated with an inductor.... Makes me think either the
matrix package didn't manage to remove the zero from the diagonal --
do you have a tree of inductors? -- or that you have a voltage
source/inductor loop.
 
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