LTspice

Q&A

by jcalvarez
LTspice

on Jul 19 2025
97 10 0
Answered
Strange issue with names 0
Answered

Hello! I'm having a weird issue with some schematics that where working before. Some current values in the device pins like for example, in the schematic below, are not being found by a .measure statement, but are found by .op labels and graphs: The schematic...

software LTspice 24.1.9

97 10 0
by eewiz
LTspice

on Jul 18 2025
172 6 0
Suggested Answer
Simulation Lockup 0
Suggested Answer

First, please consider making the data values in the bottom-screen display have a fixed number of places so the display does not jitter back and forth a character or two as the simulation runs. My project runs successfully on 24.0.12 and is clean enough...

LTspice 24.1.9 software LTspice 24.1.9

172 6 0
by Aung
LTspice

on Jul 18 2025
92 4 0
Suggested Answer
Importing encrypted Pspice model to Ltspice have error while simulation 0
Suggested Answer

I have been working on for power supply circuitry. I am using LP87702-Q1 as a buck boost converter for its variable outputs. After getting Pspice file from IT as , https://www.ti.com/product/LP87702-Q1?keyMatch=LP87702Q1#design-tools-simulation , it was...

software LTspice LP87702 24.1.9

92 4 0
by BLACKFAB
LTspice

on Jul 18 2025
33 1 0
Suggested Answer
How to set up simulation command in the MAC OS version Ltspice 0
Suggested Answer

Hi! I can't find simulation command bar in the MAC OS version Ltspice. How to make transient and AC analysis simulation. I mean how to set up simulation by my mouse not cmd line. MAC OS version Ltspice is different from Windows version. Is there...

software LTspice

33 1 0
by GuustFlater
LTspice

on Jul 18 2025
291 7 0
Answered
Option to limit the maximum number of threads 0
Answered

Dear LTspice support team, LTspice now can set the number of threads in the tools/settings menu: I'm looking for another way to set this value. Either through the ltspice.ini file, a dot-statement in a simulation file, or through a command-line...

software 24.1.1 LTspice 24.1

291 7 0
by johnsolo
LTspice

on Jul 17 2025
35 1 0
Suggested Answer
Infineon encrypted library BTH50015_1LUA runs under version 17, but not 24.1.9 0
Suggested Answer

A design simulating in LTspice requires an Infineon BTH50015_1LUA. Infineon supplies an LTspice specific model downloadable from their website, but its encrypted. My LTSpice platform is 24.1.9 and I get the following error: There is an error in file...

software LTspice 24.1.9 Encrypted Infineon BTH50015_1LUA Show More

35 1 0
by CAES
LTspice

on Jul 17 2025
88 5 0
Not Answered
LTSPICE model for RMS detector LTC5582 ? 0
Not Answered

Hello everyone, Do you happen to have LTSPICE model for RMS detector LTC5582? Thank you Kiet P.

software LTC5582 RF Power Detectors Logarithmic RMS Detectors LTspice model 24.1.9 Show More

88 5 0
by MEGAMUTANTARCSKILLZOR
LTspice

on Jul 17 2025
54 2 0
Not Answered
LTspice ADR1001 issue 0
Not Answered

Dear Sir/Madam! When I use ADR1001 with +/-15V heater supply, the center tap voltage of the output divider (INV2) is latched to ~ -9V, and also output voltage is lower than I use single +15V heater voltage. Thank You! Best Regards: Zsolt ...

simulation software issue 17.0.37.0 LTspice ADR1001 Show More

54 2 0
by eewiz
LTspice

on Jul 17 2025
34 1 0
Suggested Answer
24.x Ignores ic= for Capacitors Defined with Charge Q= 0
Suggested Answer

Hello All: The help file says: Syntax: Cnnn n1 n2 Q=<expression> [ic=<value>] [m=<value>] When I change; Q=4.7u*x*(1.19 - 0.03259*x + 0.0002686*x*x) ;C1 to; Q=4.7u*x*(1.19 - 0.03259*x + 0.0002686*x*x) ic=24 ;C1 nothing happens. C1...

24.0.12 & 24.1.9 software LTspice

34 1 0
by Laudio
LTspice

on Jul 17 2025
50 2 0
Suggested Answer
24.1.9 parsing strictness prevents simulation 0
Suggested Answer

I like to include the models in the asc file as this avoids library mess and makes the design more portable / runable. Unfortunately 3rd partly models that include .END or .ENDS etc are now parsed very strictly and .ENDS in this model from NXP fails...

LTspice 24.1.9 software 24.1.9

50 2 0
by Burakkk
LTspice

on Jul 16 2025
51 1 0
Answered
Having Trouble While Simulating 0
Answered

As you can see,my circuit is like that,I'm trying to create a switching with transistor but when I simulate,I can just see the results of the wire between the 220R resistor and LED,when I try to measure anything I get the grey probe.I'm new to LTSpice...

simulation Datasheet/Specs LTSPICE XVII

51 1 0
by sdasfdsas
LTspice

on Jul 15 2025
117 3 0
Suggested Answer
Adding SPICE models 0
Suggested Answer

I have a freshly installed version 24.1.9 of LTspice with this SPICE directive: .MODEL CA3046 NPN(IS=10f BF=145.76 VAF=100 IKF=46.747m ISE=114.23f NE=1.483 BR=100.1m VAR=100 IKR=10.01m ISC=10f RC=10 CJE=1.026p MJE=333.33m CJC=991.79f MJC=333.33m TF...

software

117 3 0
by faisal344
LTspice

on Jul 15 2025
43 2 0
Not Answered
Issues with LT Spice simulations 0
Not Answered

IMYHSYMBOL.asy version_integrateIMYH200R050M1H_Version12.asc Hi, please check error in this file, it runs well on mac but on windows it shows alot of simulation time , not rining

latest software LTspice

43 2 0
by chthulu
LTspice

on Jul 15 2025
89 1 0
Not Answered
Help me to troubleshoot the TDA1060 spice model 0
Not Answered

Hi, I trying to make a spice mode for the TDA1060 but the oscillator does not work. The circuit is a SPICE netlist for a sawtooth oscillator, where the oscillator's current is set by an external resistor (RX) and capacitor (CX), with additional features...

oscillator spice model software LTspice sawtooth 24.1.9 Show More

89 1 0
by Ilyak
LTspice

on Jul 15 2025
41 1 0
Not Answered
Bug report -lt spice asked me to report, not clear how 0
Not Answered

Hi, Apologies if this is the wrong place, trying to be helpful and report a recurrent bug, created this account and happy to be pointed to best way to do so. Using LT spice to simulate a high voltage PSU made of several HF HV AC voltage generators...

software LT spice bug 24.1.9

41 1 0

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Q&A

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Strange issue with names 0
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Simulation Lockup 0
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Importing encrypted Pspice model to Ltspice have error while simulation 0
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Suggested Answer
How to set up simulation command in the MAC OS version Ltspice 0
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Option to limit the maximum number of threads 0
Answered

Suggested Answer
Infineon encrypted library BTH50015_1LUA runs under version 17, but not 24.1.9 0
Suggested Answer

Not Answered
LTSPICE model for RMS detector LTC5582 ? 0
Not Answered

Not Answered
LTspice ADR1001 issue 0
Not Answered

Suggested Answer
24.x Ignores ic= for Capacitors Defined with Charge Q= 0
Suggested Answer

Suggested Answer
24.1.9 parsing strictness prevents simulation 0
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Answered
Having Trouble While Simulating 0
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Suggested Answer
Adding SPICE models 0
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Not Answered
Issues with LT Spice simulations 0
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Not Answered
Help me to troubleshoot the TDA1060 spice model 0
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Not Answered
Bug report -lt spice asked me to report, not clear how 0
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Answered Strange issue with names 0 Answered

Answered Option to limit the maximum number of threads 0 Answered

Not Answered LTSPICE model for RMS detector LTC5582 ? 0 Not Answered

Not Answered LTspice ADR1001 issue 0 Not Answered

Answered Having Trouble While Simulating 0 Answered

Not Answered Issues with LT Spice simulations 0 Not Answered

Not Answered Help me to troubleshoot the TDA1060 spice model 0 Not Answered

Not Answered Bug report -lt spice asked me to report, not clear how 0 Not Answered

Answered
Strange issue with names 0
Answered

Answered
Option to limit the maximum number of threads 0
Answered

Not Answered
LTSPICE model for RMS detector LTC5582 ? 0
Not Answered

Not Answered
LTspice ADR1001 issue 0
Not Answered

Answered
Having Trouble While Simulating 0
Answered

Not Answered
Issues with LT Spice simulations 0
Not Answered

Not Answered
Help me to troubleshoot the TDA1060 spice model 0
Not Answered

Not Answered
Bug report -lt spice asked me to report, not clear how 0
Not Answered