====== Iniziare con LTspice ======

[ __[[vlsi:personalpages:pacher:didattica:esperimentazioni2|Back]]__ ]


====== Introduzione ======



[[http://www.electroyou.it/admin/wiki/minitutorial-ltspice]]

[[http://www.simonbramble.co.uk/lt_spice/ltspice_lt_spice_tutorial_1.htm]]

[[http://www.my-lab.it/Simulare_con_LTSpice_IV_-_Tutorial]]



======  Interfaccia grafica principale ======


{{:vlsi:workbook:analog:ltspice:basics:ltspice_gui.png?500|Click to enlarge}}



====== Creazione di uno schematico ======

{{:vlsi:workbook:analog:ltspice:basics:ltspice_new_schematic.png?300|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_new_schematic2.png?500|Click to enlarge}}


{{:vlsi:workbook:analog:ltspice:basics:ltspice_save_as.png?500|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_save_as2.png?500|Click to enlarge}}





====== Componenti (resistenze, condensatori, induttanze etc.) ======

{{:vlsi:workbook:analog:ltspice:basics:ltspice_place_components.png?500|Click to enlarge}}





{{:vlsi:workbook:analog:ltspice:basics:ltspice_component_properties.png}}


====== Prefissi e unità di misura SI in SPICE ======

{{ :vlsi:common:warning.png?120}}

La sintassi SPICE NON e' case-sensitive! 


{{:vlsi:workbook:analog:ltspice:basics:ltspice_spice_units1.png?350|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_spice_units2.png?500|Click to enlarge}}



^   //prefisso//    ^   //Sistema Internazionale// (SI)   ^   //sintassi SPICE//    ^   //sintassi C/C++//    ^
|       tera        |              T                  |         T, t        |     1e12, 1E12      |
|       giga        |              G                  |         G, g        |     1e9, 1E9        |
|       mega        |              M                  |     MEG, meg, Meg   |     1e6, 1E6        |
|       kilo        |              k                  |         K, k        |     1e3, 1E3        |
|       milli       |              m                  |         M, m        |     1e-3, 1E-3      |
|       micro       |              µ                  |         U, u        |     1e-6, 1E-6      |
|       nano        |              n                  |         N, n        |     1e-9, 1E-9      |
|       pico        |              p                  |         P, p        |     1e-12, 1E-12    |
|       femto       |              f                  |         F, f        |     1e-15, 1E-15    |





^   //grandezza//    ^   //Sistema Internazionale// (SI)   ^   //sintassi SPICE//    ^
|     tensione       |              V                      |        V, v             |
|     corrente       |              A                      |        A, a             |
|     resistenza     |              Ω                      |        ohm, Ohm         |
|     capacità       |              F                      |        F, f             |
|     induttanza     |              H                      |        H, h             |

====== Generatori ideali di corrente e tensione ======

{{:vlsi:workbook:analog:ltspice:basics:ltspice_select_component1.png}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_select_component2.png}}




{{:vlsi:workbook:analog:ltspice:basics:ltspice_vsource.png}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_vsource_properties.png?500|Click to enlarge}}





{{:vlsi:workbook:analog:ltspice:basics:ltspice_isource.png}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_isource_properties.png?500|Click to enlarge}}


====== Fili (wires) e connessioni (nets) ======


{{:vlsi:workbook:analog:ltspice:basics:ltspice_draw_wire.png?500|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_draw_wire2.png?550|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_overlapping_wires.png?200|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_overlapping_wires2.png?200|Click to enlarge}}


====== Massa del circuito (ground) ======


Tutti i circuiti devono avere un nodo di riferimento a massa !

{{:vlsi:workbook:analog:ltspice:basics:ltspice_place_ground.png?350|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_gnd_symbol.png?200|Click to enlarge}}




====== Net aliases ======

{{:vlsi:workbook:analog:ltspice:basics:ltspice_net_alias1.png?350|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_net_alias2.png?400|Click to enlarge}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_net_alias3.png?200|Click to enlarge}}

====== SPICE netlist ======


{{:vlsi:workbook:analog:ltspice:basics:ltspice_spice_netlist.png?500|Click to enlarge}}


{{:vlsi:workbook:analog:ltspice:basics:ltspice_spice_netlist2.png?550|Click to enlarge}}

====== Profili di simulazione ======

{{:vlsi:workbook:analog:ltspice:basics:ltspice_simulate_edit_simulation_cmd.png}}

{{:vlsi:workbook:analog:ltspice:basics:ltspice_edit_simulation_command.png}}



{{:vlsi:workbook:analog:ltspice:basics:ltspice_spice_syntax.png?500|Click to enlarge}}


====== Lanciare una simulazione ======


{{:vlsi:workbook:analog:ltspice:basics:ltspice_simulate_run.png}}

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Last update: [[pacher@NOSPAMto.infn.it|Luca Pacher]] - Jan 28, 2014
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