PWM IC Tester
One of my EGR members from Iran had completed the project of building the UC3842 PWM IC tester. I like the sticker that have all the PWM IC part number (refer to the photo). It is good to have this tester as it could show you whether the PWM IC is in good condition or not. Usually when a power FET or the zener diode have problem we just directly replace the power IC without knowing 100% if it good or bad. And we dare not test the PWM IC together with the new power FET because if the power IC have problem it will surely blow the power FET again. Thus by having this tester you will have a piece of mind of not to worry again if the existing PWM IC will blow the power FET. If you have not access to this project you can click on the photo to visit the website.