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  • blasphemy000's Avatar
    Yesterday, 06:43 PM
    I've just been glancing over this thread, but here is my thought. I'm assuming your input voltage is 220-240VAC. Rectified and filtered this would...
    65 replies | 11862 view(s)
  • Silvio's Avatar
    09-24-2018, 09:50 PM
    Hi upik May I ask you where are you going to use this amplifier? Keep a few things in mind that say a proper 3K smps can power a 5K amplifier. ...
    336 replies | 40133 view(s)
  • MicrosiM's Avatar
    09-24-2018, 09:17 PM
    Showing your schematic may help. I am working at similar design
    1 replies | 2023 view(s)
  • Upik's Avatar
    09-24-2018, 11:41 AM
    Upik replied to a thread 1000w smps based on LUDO3232 in diysmps
    thanks mr. silvio, i want to make with pfc, use GDT to drive mosfet. and use flyback transformer to supply pwm. it seems i have to use etd59 to get...
    336 replies | 40133 view(s)
  • Silvio's Avatar
    09-23-2018, 10:39 AM
    Hi Upik the maximum power for an EE55 core and material PC40 you can get around 2500 to 2800 watts in full bridge topology. Do not forget what I...
    336 replies | 40133 view(s)
  • Upik's Avatar
    09-22-2018, 02:34 AM
    Upik replied to a thread 1000w smps based on LUDO3232 in diysmps
    hi mr. silvio ,, i have ee55, with a frequency of 70-80 khz ,, what is the power that is released, with a full bridge topology
    336 replies | 40133 view(s)
  • badboy_6120's Avatar
    09-20-2018, 06:59 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    Fix the problem with just letting a quarter of primary winding going through the yellow current trafo now the protection board working perfectly and...
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-17-2018, 11:43 AM
    Silvio replied to a thread How to build SMPS in diysmps
    Hello I don't have a ready made schematic with the voltage and current needed. This has to be designed from scratch. Designing and building an smps...
    3 replies | 138 view(s)
  • TBEEYY's Avatar
    09-17-2018, 06:13 AM
    TBEEYY replied to a thread How to build SMPS in diysmps
    Hello I have no schematic of it i want to build it i have machine in which the smps is placed
    3 replies | 138 view(s)
  • Silvio's Avatar
    09-15-2018, 07:51 AM
    Silvio replied to a thread Car SMPS Project in Car Audio
    Current trafo It could be the case due to the high current involved you can use a low value resistor (current shunt) instead or even a piece of...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-15-2018, 03:24 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    I will check the gate voltage of the fets as soon as I get home about the current trafo The core gets really hot (only when smps is under load) ...
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-14-2018, 08:00 PM
    Silvio replied to a thread How to build SMPS in diysmps
    Do you have a schematic of the smps? Did you try to see what is wrong with it and which components failed?
    3 replies | 138 view(s)
  • Silvio's Avatar
    09-14-2018, 07:50 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    If you want to check that the gate resistors are good just check the voltage at the gate to source with the scope. If the voltage is above 10 volts...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-14-2018, 01:19 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    So I replace the gate resistors with 15 ohms resistors for each fets and now the fets reaches to 50 degrees at 600W load now there's a problem with...
    62 replies | 2430 view(s)
  • TBEEYY's Avatar
    09-14-2018, 09:00 AM
    TBEEYY started a thread How to build SMPS in diysmps
    Hello I have Mean well SMPS which is not working due to short ciruit I want to build the SMPS which can work with 5V 60Amps and 12V 20Amps How...
    3 replies | 138 view(s)
  • badboy_6120's Avatar
    09-11-2018, 10:01 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    thanks man I get it now I appriciate your helps
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-10-2018, 10:00 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    Hi badboy The prorogation delay is the time for the IR2110 to react when given a pulse from the SG3525. we don't take that into consideration. ...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-10-2018, 05:01 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    thanks a lot if it's possible could you tell me how did you get 10 ohms from the formula? I mean what values did you use from the datasheet
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-10-2018, 07:43 AM
    Silvio replied to a thread Car SMPS Project in Car Audio
    Hi badboy I worked it out for you. The total equivalent gate resistance should not exceed 4.7 ohms for IR2110 so in your case having 2 fets in...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-09-2018, 07:41 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    should I take 150 or 35 as T on??
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-09-2018, 04:30 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    @dear silvio could you help me calculate the right gate resistor for mosfets I don't know 2 things first one what are the correct values for...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-08-2018, 12:23 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    thank you for your tips I used 2 seperate 6 ohms resistors for 2 parallel mosfets and this lower down the amount of sparks I still need to use...
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-07-2018, 08:00 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    Hi Badboy The project looks quite fine but I think you can arrange a bit the layout of the PCB. I do not know if space is very important or not...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-07-2018, 05:35 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    I also use one 2.7 ohms resistor for every two mosfets parallel in every channel should I use a higher resistor value or use a seperate resistor for...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-07-2018, 04:10 PM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    Thanks Dear Silvio for your helps So it turned out that my multi meter was reading incorrectly (Broken) and the temp on the back metal part of...
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-07-2018, 12:01 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    You cannot tell exactly until you make some comparisons with a known genuine fet. The input capacitance tend to vary according to frequency and...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-07-2018, 11:29 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    as you said I checked the output capacitance of my mosfets and I get about 8.7 nf I think they are good to go
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-06-2018, 07:10 PM
    Silvio replied to a thread Car SMPS Project in Car Audio
    Did you buy genuine transistors? Be careful as it happened to me. I bought IRF740 from aliexpress and also E-bay and they where fakes. They could...
    62 replies | 2430 view(s)
  • badboy_6120's Avatar
    09-06-2018, 07:45 AM
    badboy_6120 replied to a thread Car SMPS Project in Car Audio
    I use two IRF1404 in parallel at each channel at 500W in the output there should be around 40A in input going through the masfets!!!! I used...
    62 replies | 2430 view(s)
  • Silvio's Avatar
    09-06-2018, 05:35 AM
    Silvio replied to a thread Car SMPS Project in Car Audio
    @badboy Mosfet current rating should be 3 times the operating current. EX, for 3 amp load max current of mosfet is 9 amp. voltage spike will...
    62 replies | 2430 view(s)
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