Circuits-LTSpice

A collection of circuits in LTSpiceIV that I have examined during the years

This project is maintained by mick001

Circuits simulations in LTSpiceIV

This is my personal collection of circuits simulations in LTSpiceIV. At some point in time I simulated each one of these circuits and analyzed them. Sometimes I’d simulate a circuit we studied in class, other times I tested a theory and/or my understandings of a particular circuit, some other times I’d just simulate a design I found on the internet and other times I’d simulate a circuit I tried to build.

Below you can find a non exhaustive list of the circuits which are included in this repository. All of what is included was written on LTSpiceIV by myself. On some DC-AC converters, a gain module which I did not build myself is used. Since I’m not sure on whether I can upload it here, it is not included.

Some examples:

Common Emitter BJT configuration

Common Emitter BJT configuration

Sawtooth oscillator

image 002

Three phase full bridge inverter PWM modulation with wye and delta connected loads

image 003

AC-DC and DC-AC converters

  1. DCDC full bridge.asc
  2. Full bridge inverter.asc
  3. Full bridge rectifier.asc
  4. Half bridge inverter.asc
  5. Single phase rectifier constant current load.asc
  6. Single phase rectifier constant voltage load.asc
  7. Single phase rectifier R load smoothing capacitor.asc
  8. Three phase full bridge inverter.asc
  9. Three phase naive inverter.asc
  10. Three phase naive supply system.asc
  11. Three phase rectifier.asc

Amplifiers

  1. A class amplifier bjt.asc
  2. BJT emitter follower configuration.asc
  3. Common emitter BJT.asc
  4. Differences amplifier.asc
  5. Instrumentation amplifier.asc
  6. Push pull amplifier.asc

Basics

  1. Example of DC sweep.asc
  2. How to set initial conditions.asc
  3. Parallel resistor when negligible.asc
  4. PNP transistor biasing.asc
  5. Transistor beta.asc

Comparator circuits

  1. Comparator with hysteresis asymmetrical window.asc
  2. Comparator with hysteresis symmetrical window.asc
  3. Comparator with hysteresis window shifted from origin.asc
  4. comparatore con isteresi finestra shifted calculations.py
  5. other circuits with hysteresis
  6. Window comparator.asc

DCDC converters

  1. Boost converter 1.asc
  2. Boost converter 2.asc
  3. Buck converter.asc

Filters

  1. RC (low pass, high pass, band pass)
  2. RL (low pass, high pass)
  3. RLC (low pass, high pass, notch, band suppress)

Lossless-transmission-line

  1. Lossless transmission line DC transient.asc
  2. Lossless transmission line pulse.asc

Oscillators

  1. 555 timer.asc
  2. Astable multivibrator.asc
  3. LED blinking oscillator.asc
  4. Phase shift oscillator RC.asc
  5. Royer zvs.asc
  6. Wien oscillator.asc

Others

  1. AM modulator.asc
  2. BJT for simple current regulation.asc
  3. Cockcroft walton multiplier.asc
  4. Differential pair.asc
  5. PD controller.asc