Everything posted by BondBreaker
PhotoCoupler PCB hole
BondBreaker posted a topic in Power ElectronicsI'm building a switching power supply and i've been studying commercial ones. I've noticed that underneath the photo coupler, there is usually a hole in the PCB. What is the purpose of this? Thanks
BondBreaker replied to BondBreaker's topic in Datasheet/Parts requestsThank you
BondBreaker replied to Aan's topic in Datasheet/Parts requests?
BondBreaker posted a topic in Datasheet/Parts requestsI have a rectangular object removed from an old modem, it has 4 pins and the markings are: UT6-1B 40.320MHZ USI 9318 I want to use this crystal as the clock of a microcontroller. I haven't used 4-pin crystals before and any help with finding the datasheet and/or usage would be appreciated. THx!