Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Software Tools SPICE, PCB CAD, speaker design and measurement software, calculators

Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
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 10th October 2017, 01:54 PM   #841
FdW is offline FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
And one more
Attached Images
File Type: png Capture.PNG (45.5 KB, 166 views)
  Reply With Quote
Old 13th October 2017, 12:54 PM   #842
mr2racer is offline mr2racer  United States
diyAudio Member
 
mr2racer's Avatar
 
Join Date: Jul 2009
Hello!
__________________
Artificial intelligence is no match for natural stupidity- Red Green
  Reply With Quote
Old 26th October 2017, 08:30 AM   #843
jazbo8 is offline jazbo8
diyAudio Moderator
 
jazbo8's Avatar
 
Join Date: Jan 2011
Location: In Transient
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Is there a way to display sub grid lines for the Y-axis when using the Log scale?
  Reply With Quote
Old 26th October 2017, 09:30 AM   #844
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
You know more than me on all this

In what context do you mean ? What view do you want grid lines to display on.
  Reply With Quote
Old 26th October 2017, 09:56 AM   #845
jazbo8 is offline jazbo8
diyAudio Moderator
 
jazbo8's Avatar
 
Join Date: Jan 2011
Location: In Transient
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
It's something so simple, but why is the tick gray out for the Y-axis log scale?!
Attached Images
File Type: jpg Screenshot - 10_26_2017 , 11_54_27 AM.jpg (554.0 KB, 125 views)
  Reply With Quote
Old 26th October 2017, 10:18 AM   #846
martyh is offline martyh  United States
diyAudio Member
 
Join Date: Feb 2004
Location: Wisconsin
Quote:
Originally Posted by FdW View Post
And one more
Not sure how I missed your posts before this morning but thank you for the help. Very cool stuff
  Reply With Quote
Old 26th October 2017, 11:13 AM   #847
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Dunno on that one. It is the same in LTXVII, greyed out.

'Tick' is the scaling isn't it ? so log scaling isn't a constant increment like 10, 20, 30 etc, if that makes sense.
  Reply With Quote
Old 26th October 2017, 11:34 AM   #848
jazbo8 is offline jazbo8
diyAudio Moderator
 
jazbo8's Avatar
 
Join Date: Jan 2011
Location: In Transient
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
The spacing on the log scale isn't constant, but surely the software can figure it out, since the X-axis ticks work just fine. Must be a "feature" of LTSpice.
  Reply With Quote
Old 26th October 2017, 02:01 PM   #849
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
X axis is greyed out for me when selecting log (last image). I can't see how you could enter a setting for 'log' because ech increment goes up by a power of ten. You can set the upper and lower limits though.

Some of the other settings seem a bit odd, as if it doesn't like some values
Attached Images
File Type: jpg 1.JPG (219.9 KB, 107 views)
File Type: jpg 2.JPG (203.1 KB, 103 views)
File Type: jpg 3.JPG (272.4 KB, 101 views)
File Type: jpg 4.JPG (240.1 KB, 22 views)
File Type: jpg 5.JPG (215.9 KB, 22 views)
  Reply With Quote
Old 13th November 2017, 12:31 PM   #850
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: The great city of Turnhout, BE
Default Node 0 in subcircuit converted?

Almost all subcircuits have an internal node 0 as the 'ground' node for that particular circuit.

But what happens when you use for instance an opamp that floats with Vcc=200V and Vee=170V? In real world that would work fine (assuming the input/output signal common mode is respected).

I had some problems with such a circuit in my previous sim as it kept some internal subcircuit bias R's and generators referred to gnd which now is 170+V away of course.

In LTspice is seems to work, so I wonder is LTspice *somehow* modifies the internal node 0 to *some* circuit node that can float with power supply?

Anyone knows about this?

Jan
__________________
Cable: a potential source of trouble interconnecting two other potential sources of trouble - Erik Margan
Linear Audio pubs and articles . The SilentSwitcher now at diyaudio store SilentSwitcher. Keeping in touch with SY.
  Reply With Quote

Reply


Installing and using LTspice IV (now including LTXVII). From beginner to advanced.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
[LTSpice] Beginner - help with capacitor multiplier? bugbear Power Supplies 17 11th November 2016 11:18 PM
Meistersinger VFA-200, A beginnerís first try in LTSpice nattawa Solid State 34 29th January 2016 01:58 PM
Including a C- winding on a filament transformer AllenB Tubes / Valves 2 8th May 2014 05:17 AM
Need help installing LTSpice rif Software Tools 4 30th May 2013 01:59 AM


New To Site? Need Help?

All times are GMT. The time now is 03:17 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki