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  • Rookiex's Avatar
    Yesterday, 12:43 PM
    Rookiex replied to a thread SMPS with PFC in Power Supplies
    ordered 2kva pcbs
    29 replies | 1704 view(s)
  • rinchz's Avatar
    09-19-2019, 08:54 AM
    rinchz replied to a thread SMPS with PFC in Power Supplies
    hi there sir how was your order is it the 2KVA you have ordered? or do you have gerber files of 4KVA also? thanks
    29 replies | 1704 view(s)
  • NANO's Avatar
    09-19-2019, 02:56 AM
    NANO replied to a thread Simple amp 300w in Solid State
    There is the scheme and pcb
    10 replies | 8466 view(s)
  • Silvio's Avatar
    09-17-2019, 10:49 PM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    Hi Res, I was taught that Power factor is not measured by the watt meter when I was getting my A electrical licence. But still the extra current...
    29 replies | 1704 view(s)
  • res_smps's Avatar
    09-17-2019, 12:11 PM
    res_smps replied to a thread SMPS with PFC in Power Supplies
    Dear Silvio, First I clarify my statement above that I do not need (interested) the PFC applies to me personally, not in general. from what I...
    29 replies | 1704 view(s)
  • Silvio's Avatar
    09-17-2019, 05:09 AM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    @ Res, Yes it could be that input capacitance can be smaller and it is also true that there is another high frequency noise source. This chap is...
    29 replies | 1704 view(s)
  • Silvio's Avatar
    09-17-2019, 05:07 AM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    @ Res, Yes it could be that input capacitance can be smaller and it is also true that there is another high frequency noise source. This chap is...
    29 replies | 1704 view(s)
  • res_smps's Avatar
    09-16-2019, 02:26 PM
    res_smps replied to a thread SMPS with PFC in Power Supplies
    Sorry Silvio, With the presence of PFC, capacitor requirements can be smaller, I attach an excel file for PFC calculations (I downloaded from onsemi...
    29 replies | 1704 view(s)
  • Silvio's Avatar
    09-16-2019, 12:31 PM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    @ Rinchz, Regarding the PCB you can design your own if you want and make one in single sided version. Take care of the spacing between traces when...
    29 replies | 1704 view(s)
  • rinchz's Avatar
    09-16-2019, 04:03 AM
    rinchz replied to a thread SMPS with PFC in Power Supplies
    hi sir i have learned a lo from you since, thank you very much i have seen these SMPS schema a little long time and i am interested in doing so,...
    29 replies | 1704 view(s)
  • res_smps's Avatar
    09-14-2019, 02:16 PM
    res_smps replied to a thread Resonant SMPS using L6599 in diysmps
    this is the waveform, i measured it using pcb V1 (post # 1) https://drive.google.com/drive/folders/1UA6K-lK1vEmXdeSdycBP-v_4cYAZewmD my...
    37 replies | 2555 view(s)
  • NANO's Avatar
    09-13-2019, 10:46 PM
    NANO replied to a thread Simple amp 300w in Solid State
    There is the scheme and pcb
    10 replies | 8466 view(s)
  • Silvio's Avatar
    09-13-2019, 12:27 PM
    I encuntered a dilemma what to choose as an insulator behind a power transistor. Is it a silicone pad, a mica pad or a ceramic pad. Which of these...
    0 replies | 156 view(s)
  • res_smps's Avatar
    09-13-2019, 03:16 AM
    res_smps replied to a thread Resonant SMPS using L6599 in diysmps
    It's okay, I will try to fix and improve one by one I do this just for fun, not being chased by any target
    37 replies | 2555 view(s)
  • Silvio's Avatar
    09-12-2019, 08:08 AM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    Hi Michelle, I forgot to mention something else. If the smps is to be a 2Kw one then the input capacitance shall be larger. A couple of 680uF or...
    29 replies | 1704 view(s)
  • MicrosiM's Avatar
    09-12-2019, 08:01 AM
    MicrosiM replied to a thread Resonant SMPS using L6599 in diysmps
    @Res That means your SMPS is not running properly, and I believe that you still have a lot of work to do. Good luck
    37 replies | 2555 view(s)
  • iop95's Avatar
    09-12-2019, 07:26 AM
    iop95 replied to a thread Resonant SMPS using L6599 in diysmps
    @res_smps There are some calculations to check for entering in capacitive mode; I have a spreadsheet but need to translate in english... maybe in...
    37 replies | 2555 view(s)
  • res_smps's Avatar
    09-12-2019, 12:18 AM
    res_smps replied to a thread Resonant SMPS using L6599 in diysmps
    the higher resonant frequency of my smps is 68kHz and the lower is around 30khz. my smps works with 50khz to 90khz variable switching frequency ...
    37 replies | 2555 view(s)
  • Silvio's Avatar
    09-11-2019, 08:12 PM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    Hi Michelle, Do not be mislead the video in the first post shows a full bridge smps while you are building a half bridge smps. As I can see the pcb...
    29 replies | 1704 view(s)
  • Rookiex's Avatar
    09-11-2019, 01:43 PM
    Rookiex replied to a thread SMPS with PFC in Power Supplies
    Hello Silvio greetings managed to find the schematic of the pcb i ordered please can you check PWM section is it...
    29 replies | 1704 view(s)
  • Rookiex's Avatar
    09-11-2019, 02:38 AM
    Rookiex replied to a thread SMPS with PFC in Power Supplies
    Hello Silvio greetings and many thanks for replying i am waiting for the pcbs and collecting the parts if you need pcb ...
    29 replies | 1704 view(s)
  • MicrosiM's Avatar
    09-10-2019, 12:48 PM
    MicrosiM replied to a thread Resonant SMPS using L6599 in diysmps
    Yes, that makes sense, but optimal point where Fs = Fr, thats my own opinion. Thanks
    37 replies | 2555 view(s)
  • iop95's Avatar
    09-10-2019, 12:19 PM
    iop95 replied to a thread Resonant SMPS using L6599 in diysmps
    For LLC it's not mandatory to work at Fs = Fr only. Below Fr it's a boost gain zone and above a buck gain. Below Fr must check to not enter in...
    37 replies | 2555 view(s)
  • Silvio's Avatar
    09-10-2019, 10:49 AM
    Silvio replied to a thread SMPS with PFC in Power Supplies
    Hi Michelle, The main transformer detail is all in the video. What other problem you have just let me know. I also wanted to tell you that the...
    29 replies | 1704 view(s)
  • Rookiex's Avatar
    09-10-2019, 12:09 AM
    Rookiex replied to a thread SMPS with PFC in Power Supplies
    Hello Silvio greetings can you guide me how to make PWM transformer for the schematic posted in first post warm regards Michelle
    29 replies | 1704 view(s)
  • scarface's Avatar
    09-09-2019, 05:58 PM
    scarface replied to a thread High Power SMPS with MCU in diysmps
    Thank you Res! This helped me a lot, I'm going to redesign the power supply learning from the rectifier's design. :w)
    9 replies | 724 view(s)
  • MicrosiM's Avatar
    09-09-2019, 05:00 PM
    MicrosiM replied to a thread Resonant SMPS using L6599 in diysmps
    @ Res I am not sure if thats the reason for the semi sinusoidal waveform, in my case I have almost perfect sinusoidal wave form at the Cr without...
    37 replies | 2555 view(s)
  • mituadas's Avatar
    09-09-2019, 03:42 PM
    Thanks Silvio for your advise. It works for me. My Feedback connection was before the Inductor. I rectified it and now it is working.
    441 replies | 80873 view(s)
  • res_smps's Avatar
    09-09-2019, 10:20 AM
    res_smps replied to a thread High Power SMPS with MCU in diysmps
    for your reference https://drive.google.com/open?id=107cBCbHy8v-j4sYy5BS-08w6SwVhhn3e thank you
    9 replies | 724 view(s)
  • res_smps's Avatar
    09-09-2019, 10:11 AM
    res_smps replied to a thread Resonant SMPS using L6599 in diysmps
    Thank you Microsim, I measure the voltage at resonant capacitor using voltage divider (1M and 10K if I remember correctly) then connect to my...
    37 replies | 2555 view(s)
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