Announcement

Collapse
No announcement yet.

Mean Well RD125-1224 switching power supply using a NE1101F ic chip

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Mean Well RD125-1224 switching power supply using a NE1101F ic chip

    Here is the data sheet for this ic chip it is for A or B version not for F version but the letter has to with what frequency it is using for this version

    https://cdn.badcaps-static.com/pdfs/...7acd988ac4.pdf

    This is a dual voltage output version ( output 1 )12 volt / output 2 24 volt output

    There dose not seem to be much circuitry on the secondary side of this power supply

    Curiously got the best of me and I had to see how this power supply was made
    Attached Files
    Last edited by sam_sam_sam; 09-20-2020, 09:56 AM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    #2
    Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

    Update

    Well my engraving machine is happy with this switching power supply

    I had up the voltage a little bit because my 24 volt output side was about 0.500 volts low

    brought up the 24 volts to exactly 24 volts and the 12 volts side was about 12.5-something

    which will work fine

    Now I have to make an enclosure ( with the 3D printer) for end of this switching power supply because I want to cover the input 120 ac current terminals so I do accidentally touch those terminals “ safety first “

    I also have hook up the controller power supply switches I still have a lot of work to do on this project

    My laser ( and or ) spindle motor and engraving machine controller can all work off of the same switching power supply instead of 3 different switching power supply ( bumper)
    Last edited by sam_sam_sam; 09-20-2020, 12:00 PM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment


      #3
      Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

      Update

      The switching power supply has been running for last 2 hours now and the voltage on the 24 volts is now it 24.44 now and now the 12 volts is now 12.44 volts which also fine because the only thing running right now is the engraving controller
      Last edited by sam_sam_sam; 09-20-2020, 01:30 PM.
      9 PC LCD Monitor
      6 LCD Flat Screen TV
      30 Desk Top Switching Power Supply
      10 Battery Charger Switching Power Supply for Power Tool
      6 18v Lithium Battery Power Boards for Tool Battery Packs
      1 XBox 360 Switching Power Supply and M Board
      25 Servo Drives 220/460 3 Phase
      6 De-soldering Station Switching Power Supply 1 Power Supply
      1 Dell Mother Board
      15 Computer Power Supply
      1 HP Printer Supply & Control Board * lighting finished it *


      These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

      1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
      2 Hem Saw Computer Stack Board

      All of these had CAPs POOF
      All of the mosfet that are taken out by bad caps

      Comment


        #4
        Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

        Be careful when buying a dual channel switching power supply because some seller are miss interpreting the specifications of this type of switching power supply

        Putting the maximum amperage for each channel and not what each channel outputs if you use both channel together at the same time but on the data plate shows the maximum output if both channels are used at the same time and does not tell you what the maximum amperage is if you use only one channel which to me is a mistake on there part

        This would not take that much space on the data plate for this information really
        Last edited by sam_sam_sam; 09-20-2020, 04:02 PM.
        9 PC LCD Monitor
        6 LCD Flat Screen TV
        30 Desk Top Switching Power Supply
        10 Battery Charger Switching Power Supply for Power Tool
        6 18v Lithium Battery Power Boards for Tool Battery Packs
        1 XBox 360 Switching Power Supply and M Board
        25 Servo Drives 220/460 3 Phase
        6 De-soldering Station Switching Power Supply 1 Power Supply
        1 Dell Mother Board
        15 Computer Power Supply
        1 HP Printer Supply & Control Board * lighting finished it *


        These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

        1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
        2 Hem Saw Computer Stack Board

        All of these had CAPs POOF
        All of the mosfet that are taken out by bad caps

        Comment


          #5
          Re: Mean Well RD125-1224 switching power supply using a NE1101F ic chip

          Couple of things I forget to mention

          The laser that I have with the engraving machine at 100% laser power at 12 volts using engraving controller switching power supply controller which was about 2 amps this was a test just to see if it could handle the load

          But what I going do instead is use the 12 volts for the laser and have the engraving controller on the 24 volts

          When I am using the spindle motor will be on 24 volts and the engraving machine controller on 12 volts side
          9 PC LCD Monitor
          6 LCD Flat Screen TV
          30 Desk Top Switching Power Supply
          10 Battery Charger Switching Power Supply for Power Tool
          6 18v Lithium Battery Power Boards for Tool Battery Packs
          1 XBox 360 Switching Power Supply and M Board
          25 Servo Drives 220/460 3 Phase
          6 De-soldering Station Switching Power Supply 1 Power Supply
          1 Dell Mother Board
          15 Computer Power Supply
          1 HP Printer Supply & Control Board * lighting finished it *


          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
          2 Hem Saw Computer Stack Board

          All of these had CAPs POOF
          All of the mosfet that are taken out by bad caps

          Comment

          Working...
          X