Assistance with SPICE Simulations - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 7th February 2006, 10:18 PM   #1
JMB is offline JMB  United States
diyAudio Member
 
Join Date: Apr 2004
Location: Texas
Default Assistance with SPICE Simulations

I have TINA from Texas Instruments and SWcad. I would like to model a circuit to evaluate notch circuits and the effects of components. I am having trouble inserting a voltage source. Every time I try to run a simulation, it insists that I insert an IC into the circuit.

I was hoping that someone might be able to walk me through setting up a simulation in a SPICE program. I am SPICE naive.

Any SPICE freeware guidance would be fine if you aren't familiar with the SPICE programs above.

Thanks,

J
  Reply With Quote
Old 7th February 2006, 10:58 PM   #2
JohnG is offline JohnG  United States
diyAudio Member
 
Join Date: Mar 2002
Location: Upstate NY
A complete walkthrough is more than can do at this time, but here are some helpful hints:

Make sure that there are no ideal capacitors in parallel with ideal voltage sources, and that there are no ideal inductors in series with current sources. At the very least, you should add a small resistor (0.001 ohm is a good place to start) in series with voltage sources and a large resistor in parallel with current sources (1e6 to 1e9 is a good place to start.

Also, make sure that every node has some DC path to ground. Things that can form a DC path are voltage sources, inductors, and resistors. If there is a node without such a path, you can add one with a large value resistor (see above).

Finally, make sure you have a ground node.

I use SWcad for home and professional use. There is an unofficial user group on yahoo for it as well.

P.S. If you attach a SWcad schematic to your message, it would help to eliminate any obvious problems.

John
  Reply With Quote
Old 8th February 2006, 09:28 PM   #3
JMB is offline JMB  United States
diyAudio Member
 
Join Date: Apr 2004
Location: Texas
Thanks, I joined the users group, got a manual and also got some other feedback. With the use of your feedback in addition to the other information, I should be good to go.

Thanks again,

Jay
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Simulations in Pass Article Michael Rothacher Pass Labs 2 26th March 2008 10:49 PM
Free Spice Or Cheap Spice Simulator-Where To Start? kelticwizard Everything Else 29 15th February 2007 01:38 AM
Seas L15 simulations Khron Multi-Way 3 11th April 2006 04:38 AM
Protel simulations Kees Solid State 2 12th November 2002 03:47 AM


New To Site? Need Help?

All times are GMT. The time now is 01:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2