BUG REPORT: LM741 model broken on DC Solver.

There is a problem in CL with the 741 model which causes the DC simulation to give incorrect results.

Replacing the model with a TL081 seems to fix the problem.

Running a Time Domain sim suggests the problem may be in the intial conditions of the model but both the LM741 and the TL081 models show similar behaviour.

This illustrates the problem:

by signality
October 03, 2013

Post a Reply

Please sign in or create an account to comment.

Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.

New @ CircuitLab
cyshigue saved circuit: "Filtro_RLC_Rejeita_Faixa" 26 seconds ago
mmshiro saved circuit: "Analog Computer: Oscillator"
jessijha saved circuit: "QPix Pixel Input Measuring..."
ansue1234 saved circuit: "Schmitt_trigger_MOS"
leobarlas started discussion: "changing component value"
vanderghast commented on question: "oscillator wont simulate correctly"
Stevewill62 asked: "24 volt controller to 12 volt load"
Dan.Ka started discussion: "CircuitLab example wrong?"
DFinamore commented on question: "Transformer model with CT primary..."
Foxx commented on question: "Trying to make a DIY 10000 lumen..."
plshelpadummy asked: "Trying to make a DIY 10000 lumen..."
maddiemueller asked: "oscillator wont simulate correctly"
DFinamore asked: "Transformer model with CT primary..."
danialusk commented on an answer to: "Create your own diagram of 4 bulbs..."
vanderghast answered: "custom components"
eachhabitual answered: "photocoupler"
Foxx answered: "3 phase power supply"
sgeorgia answered: "Relays on a chip"
swipesy started discussion: "Resetting part auto numbering"
lsears started discussion: "45 Degree Wire"
CircuitLab Blog: "Live DC Simulation!"
CircuitLab Blog: "Digital Adders and Wider Muxes"

Forums » CircuitLab Support Forum