Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Jdo300

    Problems snubbing HF noise on flyback transistor

    That's a good idea. I was actually planning to provision the gate drive with separate diode and resistors to separately control the rise and fall times of the MOSFET. It looks like the problem is with the turn-off waveform so I should be able to gain some efficiency back by eliminating the...
  2. Jdo300

    Problems snubbing HF noise on flyback transistor

    @itsmoked, I did finally try the Gate resistor and it worked very well to cut down the HV spike by 90%. The main issue is that the circuit is now taking an efficiency hit due to the slower switch transition times. This is a good fix for now, but I'm hoping to make some additional improvements...
  3. Jdo300

    Problems snubbing HF noise on flyback transistor

    Hi Keith, Actually, I have not (yet). Unfortunately, when I designed the PCB, I did not add a footprint for a gate resistor. So I'm hoping I can try a few other things first to see if I can fix the problem before hacking the board up to patch in a resistor. That's a good suggestion though.
  4. Jdo300

    Problems snubbing HF noise on flyback transistor

    Hello, I am working on the design of a flyback converter based on the LT3751 capacitor charging circuit. My design is similar to the 42 A cap charger example on pg. 25 of the LT3751 datasheet. In my case, the circuit runs on 12V and steps up the output to 430 V, but I am having some major noise...
  5. Jdo300

    Enercy of Schumann resonance cavity

    Hello All, I'm doing some research into the Schumann Resonance and I'm trying to get a rough idea of the energy content of the cavity at its fundamental frequency of 7.8 Hz, which I heard has the highest intensity. I know that the resonance is caused from lightning strikes all over the world...
  6. Jdo300

    No Transparency for clear materials?

    Hello All, I'm a newbie to Inventor 6 and I made a simple extruded cube that I wanted to display as the material "Lexan (Clear)". But for some reason when I change the material to that, it turns white instead of transparent. I also tried to set it to other materials that should have displayed...

Part and Inventory Search

Back
Top