I'm studying for my electrical circuits exam and since Eagle is used for some future exams I thought I could learn it and double-check my calculations by simulating with Eagle.
I'm trying to simulate the following circuit, but Eagle is giving me a "singular matrix warning" and failing to simulate. It's also telling me to "check nodes l_l2#branch and l_l2#branch" but I don't know how which nodes those are, or how to get nodes' names.
I searched for this error and what I found concerned voltage sources in a loop (only one source here) or infinite impedance branches (there shouldn't be any). Why isn't the simulation running? Thanks in advance!
* SpiceNetList * * Exported from Main.sch at 5/12/19 12:37 PM * * EAGLE Version 9.4.0 Copyright (c) 1988-2019 Autodesk, Inc. * .TEMP=25.0 * --------- .OPTIONS --------- .OPTIONS ABSTOL=1e-12 GMIN=1e-12 PIVREL=1e-3 ITL1=100 ITL2=50 PIVTOL=1e-13 RELTOL=1e-3 VNTOL=1e-6 CHGTOL=1e-15 ITL4=10 METHOD=TRAP SRCSTEPS=0 TRTOL=7 NODE * --------- .PARAMS --------- * --------- devices --------- V_V1 N_1 0 DC 1V AC 1V R_R2 0 N_1 4 L_L1 0 N_3 20m L_L2 0 N_1 20m R_R1 N_3 N_1 2 * --------- simulation --------- .control set filetype=ascii OP write Main.sch.sim .endc .END
P.S. Are there any good Eagle tutorials out there focused on SPICE simulation? Moreover, Eagle only allows simulating DC/AC sweeps, transients or at operating point. How do I simulate a constant-frequency AC source?