Hi All, I am looking for a sanity check here. (And maybe a lesson in SMPS design.)
I have a Flyback converter that was generating a lot of RF emissions. We placed a 4.7nF/500V capacitor between the primary and secondary windings and it greatly reduced the RF emissions (-15dB). I am a little...
I am specifying a 4 channel thermocouple device, and I am not sure what my requirements are for common mode range. I found some devices where each thermocouple is galvanicly isolated, so there is 500V common mode range. There are also devices where the thermocouples are not individually...
I am testing a design for a device with a built in Ethernet switch for CE certification. We failed the EM Emissions portion of the test due to noise spikes at 125, 250, and 375 MHz. I immediately suspected the Ethernet communication because the actual clock rate of 100Mbit/s Ethernet is...
This morning I did a Google search on voltage translation and the first 2 pages were patent websites. As far as I am concerned these sites are of no value, and really annoying. However, they must be pretty good at search engine optimization. Has anyone else noticed the increase in these...
I am designing a DC-DC converter that will have a 24V input and outputs of +/- 15V, 5V and 3.3V (~1A for 15V, .5A for 5V and 3.3V). I was thinking of using something like a flyback converter (I think) where a MC33063 would be used to drive a transformer primary with two secondarys. The first...
