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Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
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Old 23rd September 2018, 08:12 AM   #1461
Mooly is offline Mooly  United Kingdom
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Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Thanks Paul… I'll have to study those in great detail I know exactly what you mean about sussing something out and then forgetting how you did it.
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Old 23rd September 2018, 09:32 AM   #1462
Mooly is offline Mooly  United Kingdom
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Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
I've trawled the help files included in LTspice and found this useful info. Its all starting to make more sense now.
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Old 15th October 2018, 01:16 PM   #1463
kees52 is offline kees52  Netherlands
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I did try to get a opamp multiplier for the circlotron, but I need the other way around, the voltage over Q1 needs to up with temperature, now it go down with temperature because it is for a amplifier with VAS as the most are.

Pic two is what I want, I did swap the diodes but did not work, and change the feedback do also not work.

maybe here is a opamp specialist who can advice me hot to do it in ltspice..

thanks.
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Old 16th October 2018, 08:48 AM   #1464
bordodynov is offline bordodynov  Belarus
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Try using LM35
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Old 25th October 2018, 06:40 PM   #1465
Tazzz is offline Tazzz
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Is there any way to start a transient simulation from a saved state in LTspice?

Not just skipping initial operating conditions but resuming a transient simulation from some previosly saved state to skip turn on transients and similar ?
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Old 25th October 2018, 06:45 PM   #1466
djoffe is offline djoffe  United States
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see

.SAVEBIAS filename
.LOADBIAS filename


.LOADBIAS -- Load a Previously Solved DC Solution
Syntax: .loadbias <filename>

The loadbias command is the compliment to the .savebias command. First run a simulation that executes a .savebias command. Then change the .savebias command to a .loadbias command.
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