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My power supply does not start up?

Forums: AC-DC Conversion Forum

Hi, I have a power supply that does not startup. I just did everyting like shown in the databook but it won't power up. I have some waveform plots. How can I upload them to the forum? Thanks a lot. A Desperate Designer.

Do PI parts have a UL, CSA or other safety agency file number?

Forums: AC-DC Conversion Forum

One question we see periodically from users is a request for the UL file number for PI parts.The UL (or other safety agency) file number for a component indicates that it has met the safety requirements for that class of component. Components where this is a requirement are opto-couplers, Y