Circuit Scribe Draw Circuits Instantly

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
Previous template Next

Related Topics

Collapse
  • sew333
    Can i plug pc on this apartment with older fuse box?
    by sew333
    Hello. I will be buying new apartment to live. But fuse box is older. Not the newest.

    And my question. It will be fine to plug pc in this new apartment with that fuse box,i think it is aluminium,right?

    PC WILL BE: Rtx 4090,14900K,1600W PSU

    It looks like this ( screen from internet ). Looks like this,not sure i dont take a pic from there. Can i plug pc with that one?

    screen of this:


    room:




    Someone said this to me.

    1

    "I would get advice from a local electrician...
    03-29-2024, 05:37 PM
  • Astonished
    Fixing the Charge Circuit of the Batteries of the DC Motor
    by Astonished
    Hi friends of electronics

    What you see in the video and pictures attached is the circuit for charging the batteries of a DC motor.

    The problem is that this circuit cannot charge the batteries (3 1800mAH NiMH batteries) any more. When the circuit was OK, its green LEDs lit up one at a time to show that the batteries have charged more. But now that the circuit is flawed, LEDs light up as you see in the video and at the same time successive beeps are heard.

    Please help me fix this circuit.

    (the datasheet of the IC: https://pdf.datasheet.live/28...
    01-28-2025, 06:24 AM
  • CPUFiddler
    Acer Nitro 5 AN515-45 not charging
    by CPUFiddler
    Hi there. I am trying to repair an Acer Nitro 5 AN515-45 and it's giving me some trouble. I have access to SMD rework station, variable power supply, digital oscilloscope, thermal camera, multimeter, stereo microscope.
    This laptop will boot and run from the power brick and/or the internal battery, but it will not charge the battery. NirSoft BattInfo tells me the charge/discharge currents, so I'm confident in saying that it's not charging. In addition, there's no increase in voltage at the battery connector when the laptop thinks it's charging, not even a few millivolts.
    I've downloaded...
    1 Photo
    03-19-2025, 07:44 AM
  • Tarot Superstars
    Short Circuit tester
    by Tarot Superstars
    Hello.
    I have seen a short circuit tester made with 3 * 9V batteries, a voltage limiter component and a resistor connected to the probes of a multimeter.
    The theory is that the meter becomes sensitive enough to read very low resistances and the lowest resistance to ground on a circuit is likely to be a short circuit in that area.

    Link
    The Amazing $1 Short Finder Upgraded! Convert ... - YouTube
    https://www.youtube.com/watch?v=0eixDdCpiO4

    My multimeter isn't normally sensitive to very small resistance, but when I put a 1 mega ohm resistor...
    09-25-2023, 09:11 AM
  • Alimash
    op amp circuit function?
    by Alimash
    Hi,
    I am repairing a ups which doesn't turn on ,it has the following ICs:
    SG3525 used to drive inverter mosfets.
    couple of uc3483, one for the power supply and another to drive a big mosfet at the output stage(i think the technique is called boost)
    A LM358 and TL074 for control mechanism and of course the uController.

    The SG3525 is shutting down every time the ups is turned on.
    I want your help to know the function of LM358 and TL074 in the system.
    I reverse engineered the LM358 circuit and i think that one of the block(A) is used for battery level...
    LM358 circuit
    1 Photo
    07-31-2025, 07:45 AM
  • Loading...
  • No more items.
Working...