January 20, 2018, 10:49:31 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Welcome to TINACloud, the cloud based version of TINA, running in your browser without any installation and anywhere in the world. For limited time, now you can get it for free if you purchase a new license or upgrade to v10 version of TINA at  With this great extension you can present or modify your designs wherever you are in the world and even while travelling.

We are eager to hear from you any comments and feedback.
   Home   Help Search Login Register  
Pages: [1]
Author Topic: new user having terrible time with "irregular circuits"  (Read 1684 times)
Posts: 1

View Profile
« on: December 20, 2014, 06:33:01 PM »

I'm having trouble getting even very simple circuits to under AC analysis without giving "irregular circuit" errors.  The ERC comes out OK but when I try to do an AC analysis it keeps giving me an irregular circuit error. MOreover when I make very small changes to the circuit the apparent node that is in error changes. I've tried to be very careful about where the wires are terminating.... Would appreciate any help.  I've attached on example circuit.
Global Moderator
Full Member
Posts: 145

View Profile
« Reply #1 on: December 21, 2014, 01:49:06 AM »

There should be a resistive path from every node to the ground. In your circuit this rule doesn't apply to the node between C1 and R1, nor to the node between C2 and R1. Set the value of the parallel resistance (RPar) of C1 or C2 to a non infinite value or define a nonzero Shunt conductance (for example 1p) in the Analysis.Set analysis parameters dialog
Pages: [1]
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.9 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!