Activity Stream

Filter
Sort By Time Show
Recent Recent Popular Popular Anytime Anytime Last 24 Hours Last 24 Hours Last 7 Days Last 7 Days Last 30 Days Last 30 Days All All Photos Photos Forum Forums Articles Articles Blog Blogs
  • int11's Avatar
    Today, 02:31 PM
    Do all conventional buck converters with synchronous rectification self destruct if a voltage greater than regulated output voltage is applied to the...
    0 replies | 5 view(s)
  • ravpreet420's Avatar
    Today, 01:49 AM
    please anybody help me I am wanted to know what value of D13 in schematic print
    199 replies | 82962 view(s)
  • rahulrahulll's Avatar
    Yesterday, 04:38 AM
    sir-i have basic idea electronics--i have made amplifier, linear regulated ps, audio crossover,subwoofer filter, active crossover etc-----BUT----i...
    2 replies | 58 view(s)
  • Silvio's Avatar
    06-21-2018, 11:14 AM
    Hello rahul, welcome to diysmps. You need to read the safety information before attempting to build an smps. There safety precautions to be...
    2 replies | 58 view(s)
  • Silvio's Avatar
    06-21-2018, 10:50 AM
    Silvio replied to a thread Car SMPS Project in Car Audio
    What can I say? well you need 4 fets for full bridge and 4 gate drives more complicated as it seems. If you are willing then try it see what happens.
    36 replies | 641 view(s)
  • rahulrahulll's Avatar
    06-21-2018, 07:15 AM
    i have a transformer core from atx pc power supply-toroid core from pc power supply----- i need a schematic for smps +-22 v dc from 240 v ac--400...
    2 replies | 58 view(s)
  • badboy_6120's Avatar
    06-21-2018, 05:16 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    the 500W is before the transformer saturation and is that situation all mosfets heat normal Full brige does not suffer from staircase saturation...
    36 replies | 641 view(s)
  • Silvio's Avatar
    06-21-2018, 03:51 AM
    Silvio replied to a thread Car SMPS Project in Car Audio
    The reason for all this has to be found. Start tracing the signal where is it stopping. if its from the IC then try to change it, decouple the...
    36 replies | 641 view(s)
  • badboy_6120's Avatar
    06-20-2018, 09:01 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    the last video I uploaded was from the gates of mosfets at the same time when I connect the load one side of primary's mosfets gate voltage drops...
    36 replies | 641 view(s)
  • Silvio's Avatar
    06-20-2018, 08:45 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    @Badboy What you did not post is with the probes at the gates with the inverter on load. If you have a disturbed gate drive on load you will not...
    36 replies | 641 view(s)
  • badboy_6120's Avatar
    06-20-2018, 06:51 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    Sorry about the previous video, there was a ground issue in the measurements here's the right one : Turn's out that the voltage pulses from...
    36 replies | 641 view(s)
  • badboy_6120's Avatar
    06-20-2018, 05:21 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    Here's the PCB that I'm using for this project:
    36 replies | 641 view(s)
  • badboy_6120's Avatar
    06-20-2018, 05:15 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    @ Dear Silvio Here's a video clip from the Gate of mosfets at the same time according to Negative : Here's some shots of the transformer...
    36 replies | 641 view(s)
  • Silvio's Avatar
    06-19-2018, 07:33 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    @Badboy Here is a PDF file with some pics of a 3K inverter PS it never reached 3K
    36 replies | 641 view(s)
  • Silvio's Avatar
    06-19-2018, 06:20 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    I want to know where are you putting your probe is it on the gate of the IGBT or the ptrimary winding? The first picture shows a beautiful wave...
    36 replies | 641 view(s)
  • Silvio's Avatar
    06-19-2018, 05:33 PM
    Yes you will add it you can go for 33K each if you want. These are there to bleed off the high voltage after switch off. It will surely shock you...
    272 replies | 29206 view(s)
  • badboy_6120's Avatar
    06-19-2018, 09:41 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    Here you go This pictures are from the side of primary that the mosfets connected to it gets really hot with high load : Without any load : ...
    36 replies | 641 view(s)
  • Upik's Avatar
    06-19-2018, 08:43 AM
    Upik replied to a thread 1000w smps based on LUDO3232 in diysmps
    Well, I will try it, what about the load resistor on Primary Capacitor, ??? do i add it, ?? or can i ignore
    272 replies | 29206 view(s)
  • Silvio's Avatar
    06-19-2018, 08:19 AM
    Silvio replied to a thread Car SMPS Project in Car Audio
    @badboy Well getting 1KW at 12v is not so easy because there is a lot of current involved (80 amps) losses tend to rise drastically. Having...
    36 replies | 641 view(s)
  • badboy_6120's Avatar
    06-19-2018, 07:20 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    @Dear Silvio So I place a gap in the core legs and it did help a bit but not a lot (I could get about 50W more in the output) and transformer...
    36 replies | 641 view(s)
  • Silvio's Avatar
    06-19-2018, 06:54 AM
    @Upik Put again the 470K resistor between pin 9 and pin 1 otherwise you will have a very short dead time with 33ohms resistor on discharge pin of...
    272 replies | 29206 view(s)
  • Upik's Avatar
    06-19-2018, 02:53 AM
    Upik replied to a thread 1000w smps based on LUDO3232 in diysmps
    If the protection setting is on 20 amperes, which part should I replace mr.silvio ??
    272 replies | 29206 view(s)
  • Upik's Avatar
    06-19-2018, 01:12 AM
    Upik replied to a thread 1000w smps based on LUDO3232 in diysmps
    .Yes mr.silvio ,, I myself do not understand why the output voltage changes from before when I turn on the first time with improper frequency, maybe...
    272 replies | 29206 view(s)
  • Silvio's Avatar
    06-18-2018, 09:46 PM
    Yes indeed if you opt to have the leakage inductance instead of an external inductor before the trafo then loose coupling will be necessary to get...
    12 replies | 340 view(s)
  • Silvio's Avatar
    06-18-2018, 09:29 PM
    I have checked the data sheets of both IRFP460 and also FGH60N60FD Regarding total gate charge and rise and fall times of the two transistors they...
    272 replies | 29206 view(s)
  • iop95's Avatar
    06-18-2018, 09:17 AM
    Depending of inductance needed, gap may be high (up to few mm). Very good coupling is not desired in LLC; some time even a high leakeage inductance...
    12 replies | 340 view(s)
  • Upik's Avatar
    06-18-2018, 12:56 AM
    Upik replied to a thread 1000w smps based on LUDO3232 in diysmps
    Yes I did not set it up, and it runs on 25khz. I use two IGBT 60n60. My DT resistor keep using 33ohm, My gate resistor still uses 10ohm.ya i already...
    272 replies | 29206 view(s)
  • Silvio's Avatar
    06-17-2018, 11:15 PM
    The ringing is not a good sound also the voltage at the output is not stable. I do not know the core material and it could be that you do not have...
    272 replies | 29206 view(s)
  • Silvio's Avatar
    06-17-2018, 10:59 PM
    If you change frequency the snubber may have to be adjusted, The use of a snubber is there to filter out any spikes during switch off of the...
    272 replies | 29206 view(s)
More Activity