I'm simulating a circuit in LTspice with third party spice models aaded to it. I encountered several errors but got them solved with the help of many forums. The last error message was "Analysis: Time step too small; initial timepoint: trouble with u3:40ua-instance j:u3:12" I tried...
Time step too small; initial timepoint: trouble with node "u1:21"add the UIC option to skip finding the initial operating point, and you get: Code:[Select] Time step too small; initial timepoint: trouble with node "u1:30"which IMHO indicates something iffy about either the model's circu...
It's LTspice nebulous way of indicating that it's having trouble simulating the circuit. The message usually doesn't point to anything specific except a point in time. Check the circuit structure. Check that values are reasonable, etc. Check node voltages and currents. You can try looking at...
Now we wire it up using the <wire> symbol from the top line. This looks like a pencil. Click it and you have a crosshair cursor appear. Move that over a component node and left click. Then drag the wire up/down/left/right etc left clicking each time you want to change directio...
However, when I attempt to run this simulation, I'm met with the following error: Analysis: Time step too small; initial timepoint: trouble with node "u1:21" Here's the model, in case it's of any use: .SUBCKT MCP6001 1 2 3 4 5 * | | | | | * | ...
Analysis: Time step too small; time=1.6021e-005, timestep==1.25e-019: trouble with node "u1:30" I believe this to be a comparability issue, since it is commented in the model: "Use PSPICE (other simulators may require translation)" My question is: how should the model be modified...
R1 nodeA nodeB R=f( V(control) ) whereV(control)is the controlling voltage andf(x)is an optional function of your choice. Being a behavioural element, it has advantages and disadvantages. Another approach, a bit more involved, but without the behavioural resistor, is using this: ...