I really appreciate your time for helping me with this, Going to start making change's, learning, and I will tell you I im doing.
Thanks a lot 🤘 El mié., 24 jun. 2020 a las 18:39, Kevin A. (<ka...@scarletmail.rutgers.edu>) escribió: > lets start with problems with the low voltage part of your board. your > input power and ground are running through long, skinny traces. this is not > good... you want to minimize the L and R in these parts of the board. > > Start with making the bottom layer of the board one big ground plane. Just > make sure to add a keepout zone below the transformer. See the example in > the picture below from my design. This should make sure every circuit that > is connect to ground has a low impedance path which will help minimize > ground problems. > > Next I would suggest paying special attention to your power traces. > Especially the low voltage/high current path. Try to "visualize" where the > current is going, and how much current is actually flowing through > different parts of the board. I tried to illustrate the low voltage > currents on the top copper layer in yellow, and the high voltage in blue. > > Remember than in a switching power supply, these currents are being turned > on and off rapidly. The strong magnetic fields associated with this can > interfere with your feedback circuitry and other small signals on the > board. Try to keep the small signals away from the transformer and the > large power traces. > > And remember... the copper is essentially "free". Circuit boards typically > made by etching copper away... so you're paying for it any which way. Use > as much of it as possible! > > Lets see what you come up with. > > On Wed, Jun 24, 2020 at 12:14 PM Kevin A. <ka...@scarletmail.rutgers.edu> > wrote: > >> I've also been designing some nixie flyback power supplies lately. I will >> do a full writeup on my website of the project when the project is >> complete. >> >> I recommend these tools because I have experience with them and they >> work! >> >> On Tue, Jun 23, 2020 at 4:22 PM MrThe50sanchez <the50sanc...@gmail.com> >> wrote: >> >>> >>> Hello Again, hope everyone is good! >>> >>> I was trying to make a DC-DC booster converter using the LT1308B/A >>> device, I made a PCB for it, doing the same as the datasheet of this device >>> says, but I don´t get the High Votage, and that`s >>> why im here asking for help, I tried a lot of things put don`t know what >>> it can be. >>> >>> This is the schematic I use (This one is from the datasheet) : >>> >>> >>> The PCB I made is the same as this schematic and using the same >>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.* >>> >>> *Any Ideas of what I can do to find what is going wrong?* >>> >>> *I have LBI and LB0 from the LT1308 Device not connected to anything. >>> */SHDN pin is connected to Vin, Positive Voltage to It works. >>> *Because I want 180V output voltage I have resistor from FB R1 = 47K and >>> R2 = 300 Ohm to get 1,21V Feedback. >>> *The capacitors Im using (10nF 250v) are not electrolitic, they are >>> normal ones. >>> >>> >>> Thankss Guys! >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "neonixie-l" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to neonixie-l+unsubscr...@googlegroups.com. >>> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com >>> <https://groups.google.com/d/msgid/neonixie-l/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/CALcVLKK%3DBcPLQWcMafjUCrhNdQVxcChxNEbtGrBadW%3DkP%2B2aHQ%40mail.gmail.com > <https://groups.google.com/d/msgid/neonixie-l/CALcVLKK%3DBcPLQWcMafjUCrhNdQVxcChxNEbtGrBadW%3DkP%2B2aHQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAMyLbsGZNQ5vKMfjMQyyx%2BQ7_X2LJRAFm8EBae5tfSC0SHgUpw%40mail.gmail.com.
