LTspice toolbar

Drawing Circuit With LTspice Toolbar.

Opening LTspice

Once you have completed the Installation of LTspice, click on the Icon or shortcut pasted on the desktop or select it from the windows menu. We will see how to a draw a  circuit using Ltspice toolbar ..

Begin a New Circuit using Ltspice toolbar

You can create new circuit

  • from the file menu on Ltspice toolbar
  • click on the “New Schematic” icon.  LT Spice

Now you will see the below page

Drawing the Circuit
  • Ltspice Toolbar Summary – In the below image you can see the tools available in your Ltspice toolbar.
  • Adding a GND – This is very important. You can not do any simulation on the circuit if you don’t have a ground. To place a ground, you can
    • press the ‘g’ key, or
    • use the ground icon,  LT Spice
    • get it from the ‘Edit’ menu.
  • Getting the Other Parts – The next thing that you have to do is get some or all of the parts you need. This can be done by
    • clicking on the icon for a specific component (This is good for common components such as resistors, capacitors, etc.)  LT Spice

clicking on the ‘component’ button  LT Spice

      • pressing “F2”; or
      • going to “Edit” and selecting “Component…”.  Once this box is open, select a part that you want in your circuit.
        This can be done by typing in the name or scrolling down the list until you find it.
      • Some of the common part you will find here
        • res – resistor
        • cap – capacitor
        • ind – inductor
        • diode – diode
        • voltage – any kind of power supply or battery
      • Any this which contains the symbol [] is a library, which contains many parts.
  • Rotating and Mirroring  – Some times you will have to rotate or mirror the parts to fit them in the circuits nicely. You can do it by pressing “Ctrl+R” before placing the part. See the below image showing the same part with different orientation.
    • Rotating
    • Mirrorring
  • Placing the Parts
    • You should have most of the parts that you need at this point.
    • Now, all you do is put them in the places that make the most sense (usually a rectangle works well for simple circuits). To move parts, click on the ‘move’ icon, and then you may select parts and drag them where you want them. (When you have a part selected for a move, you can rotate or reflect it as well.)
    • If you have any parts left over, just select them and press “Delete”.

We will see wiring up a circuit in the next post.

Happy reading .. share your views and comments



Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.