回路シミュレータLTspiceの勧め

1 ltspice 2014. 6. 20 K. Shibata (a) (b) (c) ( ) ltspice ( ) (LED[ ] ) ( ) ( ) ( ) ( ) 0V ( ) R C ( ) ( ) ( ) R = +!!"# ( ) ( ) R ( ) : : (D).

2 ltspice (" ltspice " " " ) ltspice IV " ltspice IV Windows " Would you like to receive software Updates? "No thanks, just download the software" "Register .." License Agreement( ) Accept( ) "Install Now" "You have User Account Control (UAC) enabled.. " OK " ltspice IV has been successfully installed" "OK" ltspice ltspice .

3 ltspice ltspice CQ 2,592 . ( ) [ (Schematic) ] ltspice IV [ ] .asc [ ] View Show Grid ( ) [ ] Ctrl-R 270 (90 ) [ ] (Undo).

4 ltspice ( ) [ ] ( ) Ctrl-R [ ] Delete [ ] [ ] [ ] AND Select Component Symbol voltage OK [ ] ( ) [ ( 0V)]

5 ] 0V 10 3 k -3 m 10 -6 u 10 6 meg Control Panel "Netlist Options" "Convert ' ' to 'u' [*]" [ ] (Resistance) 3k 3k [ ] (Capacitance) 1u 1 F [ ] ( ) DC value Series Resistance Advanced SINE ( ) 1/10 10V Amplitude[V] Freq[Hz] 60 [ ( ) ] Simulation Edit Simulation Cmd "Transient( )" stop time 100m (.)

6 Tran 100m) [ ] RUN [ ] ( ) 1/60= [ ] Tools Color Preferences WaveForm Schematic Tools Control Panel Waveforms Plot data with thick lines [ ] Grid [ ] ( ) Ctrl-R 180 [ ] "Visible Traces" [ ] ( )

7 [ ] [ ] ( ) ( ) ( ) ( ) 90 (360 ) 1/4 ( ).

8 [ ] Add Plot Plane Alt ( ) 90 Vmsin120 t Imcos120 t VmImsin120 t cons120 t = t 0 0 ( ) ( ) ( ) R [ ] 100 100 [ ] RUN 100k [ ] {VR} "VR" [ ].

9 Op directive( ) ".step param VR list 100 2k 5k 10k" OK [ ] Run 100 , 2k , 5k , 10k [ ] ( ) ( ) on IV [ ] SINE PULSE [ ] Vinitial: 0 ON Von: 1 on on Trise: 1p Tfall: 1p on Ton: 50m Tperiod: 100m [ ] Vinitial: ON Von.

10 1meg on on Trise: 1p Tfall: 1p on Ton: 1u Trise Tfall 0 1p ( ) 0 0 Ton Von Von [ ] RC R 10k ( ) ( ) ( ) : : 0V 1V 0V 1V R C L 1 H R [ ] SINE PULSE (none) small signal AC analysis AC Amplitude 1 [ ] Edit Simulation Cmd "Transient" "AC Analysis" 2 Number of points per octave 100 Start Frequency stop Frequency 1k ( ) LCR : (log).