Understanding LTspice : Noise Simulation

Noise Simulation

Noise Simulation Analysis Ltspice can perform frequency domain noise simulation analysis which takes into account shot, thermal and flicker (1/f) noise. The resulting noise density (in units of volts per square root hertz) can then be plotted to aid in circuit analysis and understanding. These noise calculations are performed at each frequency step and can be … Read more Understanding LTspice : Noise Simulation

LTspice DC Sweep Simplified For You!

DC Sweep

DC Sweep The DC sweep allows you to do various different sweeps of your Circuit to see how it responds to various conditions. For all the possible sweeps voltage, current you need to specify a start value, an end value, and the number of points you wish to calculate. For example you can sweep your circuit over … Read more LTspice DC Sweep Simplified For You!

LTspice Run And Probe A Circuit – AC Analysis

AC Analysis

AC Analysis

When doing an AC sweep of a source, the sections highlighted Below in the source configuration window are relevant. The AC analysis allows you to plot magnitude and/or phase versus frequency for different inputs in your circuit.

Type of Sweep In the AC analysis menu you have the choice of three types of analysis:

  • Linear,
  • Octave and
  • Decade.

These three choices describe the X-axis scaling which will be produced in probe. For example, if you choose decade then a sample of your X-axis might be 10Hz, 1kHz, 100kHz, 10MHz, etc…. Therefore if you want to see how your circuit reacts over a very large range of frequencies choose the decade option.

You now have to specify at how many points you want LTspice to calculate frequencies, and what the start and end frequency will be. That is, over what range of frequencies do you want to simulate your circuit.

  • Number of points
  • Start Frequency
  • Stop frequency

Read moreLTspice Run And Probe A Circuit – AC Analysis

How To Run And Probe Circuit Using LTspice (Transient Analysis)

Transient analysis

Simulation Commands To run a simulation, specify the type of analysis to be performed. In today’s tutorial we will see Transient analysis. There are six different types of analysis: Transient analysis Small signal AC DC sweep Noise DC transfer function DC operating point Transient analysis As we have seen the different type of analysis in … Read more How To Run And Probe Circuit Using LTspice (Transient Analysis)

Wiring Up Your First RC Circuit Using LTspice

RC circuit

Wiring up a simple RC circuit In the previous post we have seen how to place parts and how to connect the circuit. Here we will see wiring up a simple RC Circuit. In order to start with , I will consider a simple example of RC filter. Click to enlarge Connecting the Circuit – Now … Read more Wiring Up Your First RC Circuit Using LTspice