Arduino signal is not passing through octocoupler. (Design of 7-level bridge inverter) — Prote

The discussion addresses a simulation issue in Proteus involving a 7-level bridge inverter controlled by Arduino signals. The main problem is that the Arduino output signals fail to pass through the optocoupler, preventing gate triggering in the H-Bridge sub-circuit. While individual high and low side bridge simulations work correctly, the complete system does not function as expected. Attempts to debug with a digital analyzer confirmed the signal blockage at the optocoupler stage. A suggested solution involves bypassing the problematic optocoupler sub-circuit (CCT005) and directly integrating the Arduino with an H-Bridge driver chip, such as the L293D, which successfully generated the 7-level inverter waveform in simulation. This approach indicates that the optocoupler model or configuration in Proteus may be causing the failure, and using a simpler direct driver model can resolve the issue.
Summary generated by the language model.