Ault 5 volt @ 5 amp power supply change to 3.0

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6024
    • USA
    #1

    Ault 5 volt @ 5 amp power supply change to 3.0

    I have a lot of these power supply
    I would like to know if the set voltage range is 4.75 to 5.75 is it possible to change the range to 3.5 to 4.75

    4.75 volts might work if I use a few of the LM317 in the current mode but I really did not want to have to do it that way

    I would like to charge some Lipo Polymer batteries and some li-ion batteries and yes I am using the protection board that came with the batteries

    I have a lot of these types of batteries and I was thinking of a project that I would like to make but charge them is a problem I do not want to have a bunch of wall wart for one project
    Attached Files
    Last edited by sam_sam_sam; 11-12-2017, 03:19 PM.
    Tags: None
    • sam_sam_sam
      Badcaps Legend
      • Jul 2011
      • 6024
      • USA
      #2
      Re: Ault 5 volt @ 5 amp power supply change to 3.0

      I might have found a way to what i want to do but i have to see if this eBay seller will take my offer for 30 of them

      3.7V 4.2V 18650 Li-ion Lithium Battery Charger Over Discharge Protection Module
      Attached Files
      Last edited by sam_sam_sam; 11-12-2017, 04:46 PM.

        Comment

        Previous template Next

        Related Topics

        Collapse
        • Tynan Dill
          Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
          by Tynan Dill
          I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

          Upon bringing it home and plugging it up, it showed a standby light.

          I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

          The screen seems to blackout and stay black, but with a flashlight I can see the display.

          With my Playstation 4 connected via HDMI, and running a game I can hear sound.

          Assuming...
          ORIGINAL POWER SUPPLY BOARD
          7 Photos
          11-22-2024, 01:46 PM
        • sam_sam_sam
          Panasonic switching power supply daughter board has two 27uf @ 50 volt capacitors which I do not keep in stock
          by sam_sam_sam
          I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow

          This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board

          After all of...
          07-13-2024, 08:14 PM
        • sam_sam_sam
          I am in need of a 21 volt switching power supply with at least 5 amp capacity
          by sam_sam_sam
          I would be open to a 24 volt @ 5 amp switching power supply that can be adjusted down to 21 volts permanently and the over load protection is still functional and low voltage cutoff 15 volt or higher if necessary

          I would rather not have to use a buck converter to get the voltage that I need

          So is anyone else that has successfully modify one for a slight lower voltage had good results willing to share with me the safest way to accomplish this task

          I googled for a 21 volt switching power supply and did not find very much information for switching power supply...
          02-19-2023, 05:47 PM
        • sam_sam_sam
          Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
          by sam_sam_sam
          I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

          One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
          03-31-2024, 02:12 PM
        • carrzkiss
          Cyberpower cps1500avr not charging batteries
          by carrzkiss
          Hello, all.

          Cyberpower Battery Backup Unit.

          I bought two new ML18-12 batteries through Amazon (They have already refunded my money for the two batteries as we thought the batteries might have been bad.)
          When I got them in, they were not fully charged. I connected them to the UPS and waited 24 hours before connecting any networking equipment.
          In parallel, they read 24v, but within 24 hours, the meter on the front of the unit dropped from 4 to 3 bars on the battery charge indicator.
          Checking the voltage, it was down to 22v.
          I quickly removed everything...
          06-15-2024, 02:10 PM
        • Loading...
        • No more items.
        Working...