I made test schem for TDA7056, but it do not work.
Simulation results:
`Circuit: gooduntitled``Doing analysis at TEMP = 27.000000 and TNOM = 27.000000``Warning: vsignal: no DC value, transient time 0 value used`
`Warning: singular matrix: check nodes r2_1 and r2_1``Note: Starting dynamic gmin stepping`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Warning: singular matrix: check nodes r2_1 and r2_1``Warning: Dynamic gmin stepping failed`
`Note: Starting source stepping`
`Warning: singular matrix: check nodes r2_1 and r2_1``Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful gmin step`
`Note: One successful source step`
`Warning: singular matrix: check nodes r2_1 and r2_1``Warning: singular matrix: check nodes r2_1 and r2_1``Warning: source stepping failed``Transient solution failed -``Last Node Voltages`
`------------------``Node Last Voltage Previous Iter`
`---- ------------ -------------`
`vsignal_1 0 0`
`vcontrol_1 0 0`
`v1_1 0 0`
`r2_1 0 0`
`r2_2 0 0`
`volprobe 0 0`
`v1#branch 0 0`
`vcontrol#branch 0 0`
`vsignal#branch 0 0``doAnalyses: iteration limit reached``tran simulation(s) aborted`
`Error(parse.c--checkvalid): volprobe: no such vector.`
`ngspice-26 done`
