LTspice IV full changelog
LTspice IV 24.1.8
released May 4, 2025 (New Release)
Improved performance and convergence
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
LTspice IV 24.1.7
released Apr 13, 2025 (New Release)
Improved performance and convergence
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
LTspice IV 24.1.6
released Mar 30, 2025 (New Release)
Improved performance and convergence
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
LTspice IV 24.1.5
released Mar 12, 2025 (New Release)
Improved performance and convergence
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
LTspice IV 24.1.3
released Feb 16, 2025 (New Release)
Improved performance and convergence
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
LTspice IV 24.1.2
released Feb 13, 2025 (New Release)
Improved performance and convergence
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
Add .option debugtran to add report in log file to help identify convergence challenges
Enhanced netlist syntax checking
Changed default integration method to Trapezoidal
Remember waveform compression settings (under Settings Compression) between LTspice invocations
Always accept “3k4” notation as 3.4k (no longer optional)
Allow device flags to be set to zero for ease of parameterization
Updated FRA example fra_eg1
Updated Help documentation
Bug fixe
LTspice IV 24.1.1
released Jan 29, 2025 (New Release)
Fixed bugs:
Fixed an .ic related bug
Improved saving of schematics to network mapped drives
Fixed an .ic related bug
Improved saving of schematics to network mapped drives
LTspice IV 24.0.12
released Apr 22, 2024 (New Release)
LTspice IV 24.0.11
released Apr 7, 2024 (New Release)
LTspice IV 17.1.15
released Oct 6, 2023 (New Release)
LTspice IV for Windows 7 - free download notice
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