Author name: skinfo75

https://youtu.be/03su1t_LUQI In this video, we explain AC inverter PCB circuit checking practically, including SMPS voltage testing, circuit line tracing, component identification, and fault diagnosis. Topics Covered AC inverter PCB basic circuit explanation AC input voltage and fuse checking Bridge rectifier and DC bus voltage checking SMPS primary and secondary circuit tracing PWM IC VCC voltage

https://youtu.be/gCgMEDXIzbc Here is a typical AC Inverter PCB SMPS Circuit Diagram for learning and troubleshooting. It shows the AC input, bridge rectifier, PWM controller, MOSFET switching, transformer, DC outputs, and feedback circuit. Important: This is a representative circuit for training. Actual component values and connections vary by AC inverter PCB model. SMPS circuit sections 1.

This video explains about ev charger inside the section primary switching uc3235 and secondary level switching with tiny transformer and igbt based push and pull circuit with main transformer , constant storing current with reactor , then convert with double diode , finally arrive 48vdc. https://youtu.be/KSjuuw04wGk

This vidoe explains about signals which are ac signal, pulse width modulation and zero crossing . microcontroller should receive clock signals by crystal oscillator, smps switching ic (example top 252pn ) generates pwm signals, zero crossing measuring AC waveform and measuring AC waveform(50 hz). Here, we used multimeter to measure signals. https://youtu.be/-McMhbMpzIo

This vidoe explains about signals which are ac signal, pulse width modulation and zero crossing . microcontroller should receive clock signals by crystal oscillator, smps switching ic (example top 252pn ) generates pwm signals, zero crossing measuring AC waveform and measuring AC waveform(50 hz). Here, we used digital oscilloscope to measure signals. https://youtu.be/XvvnZY6pg4Q