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  • res_smps's Avatar
    Yesterday, 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 | 2313 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
    9 replies | 8334 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 | 55 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 | 2313 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...
    20 replies | 1346 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 | 2313 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 | 2313 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 | 2313 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...
    20 replies | 1346 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...
    20 replies | 1346 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 ...
    20 replies | 1346 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 | 2313 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 | 2313 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...
    20 replies | 1346 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
    20 replies | 1346 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 | 690 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 | 2313 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 | 80256 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 | 690 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 | 2313 view(s)
  • res_smps's Avatar
    09-09-2019, 10:01 AM
    res_smps replied to a thread Resonant SMPS using L6599 in diysmps
    thank you Silvio I hope this result is correct because I don't really trust the meter on the input. while at the output I use constant 89...
    37 replies | 2313 view(s)
  • MicrosiM's Avatar
    09-09-2019, 08:23 AM
    MicrosiM replied to a thread Resonant SMPS using L6599 in diysmps
    @Res Very good results. Could you please confirm the below points, because I am little confused? In one of your videos, I saw that you...
    37 replies | 2313 view(s)
  • res_smps's Avatar
    09-09-2019, 05:01 AM
    res_smps replied to a thread High Power SMPS with MCU in diysmps
    Dear scarface, I can not say much about the MCU because only ATMEL AVR that I know. and I have never made a system with that much power but if...
    9 replies | 690 view(s)
  • res_smps's Avatar
    09-09-2019, 04:43 AM
    Dear silvio, yes, i've seen the video unfortunately I am bad at mechanical design and the cost of construction using a CNC machine is not cheap...
    10 replies | 651 view(s)
  • Silvio's Avatar
    09-08-2019, 11:11 PM
    Hi Res I see you found a solution at last without burning the table LOL. Those immersion heaters seem a good idea. Regarding the RF power resistors...
    10 replies | 651 view(s)
  • Silvio's Avatar
    09-08-2019, 10:54 PM
    Can you show the feedback arrangement that you are using? IF you are using feedback for output voltage regulation than you must have an output...
    441 replies | 80256 view(s)
  • Silvio's Avatar
    09-08-2019, 10:50 PM
    Silvio replied to a thread Resonant SMPS using L6599 in diysmps
    Well done Res the regulation seems rock solid and the efficiency is very good at over 90%
    37 replies | 2313 view(s)
  • scarface's Avatar
    09-08-2019, 12:41 PM
    scarface replied to a thread High Power SMPS with MCU in diysmps
    @res_smps Those Eltek systems look promising, but currently I don't want to spend for two of those units but the schema of it was useful! So,...
    9 replies | 690 view(s)
  • res_smps's Avatar
    09-08-2019, 10:31 AM
    res_smps replied to a thread Resonant SMPS using L6599 in diysmps
    load test using a water heater load with 1 heaters Pin=401,6W Vout=138,4A Iout=2,62A Pout=362,608W Eff=90,29% load with 2 heaters...
    37 replies | 2313 view(s)
  • res_smps's Avatar
    09-08-2019, 06:57 AM
    res_smps replied to a thread High Power SMPS with MCU in diysmps
    for 48V systems you might consider eltek flatpack2 by using a controller that you can develop yourself https://github.com/The6P4C/Flatpack2...
    9 replies | 690 view(s)
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