Skip to main content

DESC

Project description

LTSpice data parsing library for python

Installation

$ pip install ltspice

Supported Files

  • encoding : UTF8 / UTF16-LE
  • format : Binary / Ascii
  • extenstion : .raw / .fft

Usage

import ltspice
filepath = 'Your ltspice output file (.raw)'
l = ltspice.Ltspice(filepath)
l.parse() # Data loading sequence. It may take few minutes for huge file.

time = l.get_time()
V1 = l.get_data('V(N1)')

Examples

01 - RC Circuit

LTSpice file (.asc)

Python code (.py)

import ltspice
import matplotlib.pyplot as plt
import numpy as np
import os

l = ltspice.Ltspice(os.path.dirname(__file__)+'\\rc.raw') 
# Make sure that the .raw file is located in the correct path
l.parse() 

time = l.get_time()
V_source = l.get_data('V(source)')
V_cap = l.get_data('V(cap)')

plt.plot(time, V_source)
plt.plot(time, V_cap)
plt.show()

Output result

02 - Multi point simulation

LTSpice file (.asc)

Python code (.py)

import ltspice
import matplotlib.pyplot as plt
import numpy as np
import os

l = ltspice.Ltspice(os.path.dirname(__file__)+'\\rectifier.raw') 
# Make sure that the .raw file is located in the correct path
l.parse() 

time = l.get_time()
V_source = l.get_data('V(source)')
V_cap_max = []

plt.plot(time, V_source)
for i in range(l.case_count): # Iteration in simulation cases 
    time = l.get_time(i)
    # Case number starts from zero
    # Each case has different time point numbers
    V_cap = l.get_data('V(cap,pgnd)',i)
    V_cap_max.append(max(V_cap))
    plt.plot(time, V_cap)

print(V_cap_max)

plt.xlim((0, 1e-3))
plt.ylim((-15, 15))
plt.grid()
plt.show()

Output result

$ [8.299080580472946, 7.855469107627869, 7.391375303268433, 6.944645524024963, 6.529755532741547]

If you want to find more usage examples, please check examples folder.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for ltspice, version 1.0.5
Filename, size File type Python version Upload date Hashes
Filename, size ltspice-1.0.5-py3-none-any.whl (5.8 kB) File type Wheel Python version py3 Upload date Hashes View

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page