I have a rather large circuit (switch mode power supply) that I'm simulating in LTSpice, but in order to get the simulation started, I must hit stop and start multiple times to get past the "Singular Matrix" Error. I've read into shunt resistors and all that, but I've tried placing...
Fatal Error: Singular matrix: check node u1:106 Iteration No. 16 This circuit has floating ...
When I run it, however, I get a "Singular Matrix error on Node 006"...Node 006 is only the 330pF compensation cap to ground. Now, PLEASE NOTE: My question is only related to the LTSpice error message. The real circuit itself is working very well. EDIT: I had to upload the .ASC...
WARNING: Node U002 is floating.WARNING: Less than two connections to node U001. This node is used by E1.WARNING: Less than two connections to node U002. This node is used by E1.Singular matrix: Check node u002 Iteration No. 1Direct Newton iteration failed to find .op point. (Use ...
However, LTspice is giving me odd errors: WARNING: Node N012 is floating. WARNING: Less than two connections to node NC_01. This node is used by S:U4:1. Singular matrix: Check node q5#collector Iteration No. 2 Fatal Error: Singular matrix: check node q5#collector Iteration No. 2 ...
看样子你要仿一个二极管。首先 value=｛2*v(v1)｝；其次，LT貌似不做输入参数的迭代，所以会有这样的错误提示（如果能就直接能仿TCM了）最后N-R解吉尔霍夫的时候，只计算节点电压，所以两点电压差用｛v(label1)-v(label2)｝