div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: PowerPoint Presentation › files › industry › · 4 Laser simulation circuit for testing using a PWM controlled IR LED drive circuit IR LED LASER NTC THERMISTOR SIMULATOR src=https:reader036fdocumentsnetreader036viewer20220708225f2634ee804b12592648890ehtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv