Using a transistor for the first time ( I'm lost)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • scampo77
    Badcaps Veteran
    • Dec 2010
    • 233

    #1

    Using a transistor for the first time ( I'm lost)

    I have a pin on a IC with nothing applied to it, it has 8vDC. i need to apply 10-14 vDC. on a switch. i dont want to use a relay because i just dont have room on the board. it is just a signal so the amp draw is very very low.

    is it possible to use a mosfet or something in a TO-92 case and drive the gate/base with my switching voltage?

Related Topics

Collapse

  • titomno2
    Gaming Laptop Zephyrus S17 TFT not detected every time !
    by titomno2
    Hi guys,
    I post my problem here because I think it could be a capacitor related issue (Asus support on this particular subject is non-existing).
    So the computer is a Zephyrus-S17-GX735LXS-26T and the strange behavior is seen.
    On cold start most of the time the internal screen is detected and a picture it works fine until shutdown, sleep or deep sleep.
    Then the screen won't work for a long period of time.
    If I wait 1 or 2 hours it work again most of the time.
    When it doesn't work the batterie indicator blink 3 times white stop and the same schematic is repeated...
    01-19-2025, 08:27 AM
  • flat-earther
    Adding a clock battery to action camera to retain date&time when changing batteries Campark X25
    by flat-earther
    I have a cheap action camera with an annoying trait, every time I change batteries the date & time gets reset and I have to set it again.

    To solve this problem I want to add a small internal battery inside it which will keep supplying power to the camera for a while while I change batteries so the date & time is retained.

    I have opened the camera and I think there is enough room to add something inside to accomplish this:

    The camera is powered by a 3.7V nominal single cell lithium ion battery.
    So I need to connect another battery in...
    06-08-2025, 02:00 AM
  • OscarAV
    HP Pavilion dm4-1065dx long time to get the power led on
    by OscarAV
    Hello,

    I just came here to see if someone has had the same problem I have, and if he or she solved It, to know how to do It.

    I have made a quick search for my laptop but I have not seen anything similar.

    I have an old laptop, an HP Pavilion dm4-1065dx which takes a lot of time to be ready to start if the laptop has been unplugged for a while. It has no battery. The battery failed long time ago. It needs to be plugged to work. But as I said, It can take a lot of time until the charging led gets on, and I can switch on the laptop. I am using an external monitor...
    09-23-2024, 05:53 PM
  • Dannyx
    UC3842 Power Adapter Blowing Fuse
    by Dannyx
    Good day folks......wow this new layout is weird. It's like I woke up one day and I'm no longer on Planet Earth or something

    Anyway....got this here power brick from a USB to SATA adapter which keeps blowing the fuse after I almost repaired it. The reason I even bother to fix a power brick (wall wart, whatever) in the first place is because this thing was really convenient to use: I'd just plug it and that's it. It's a dual output supply, for both 12v and 5v, which although I COULD easily obtain with a DC-DC converter from a standard 12v adapter, I thought I should crack open the...
    12-05-2023, 12:06 PM
  • magneh
    Behringer Eurolive B205D repair - help identifying transistor
    by magneh
    Hello
    Got this speaker from a friend , defective. Power led comes on and off , in a loop.
    Disassembled, got the board out, and after a bit of measuring I found a low resistance on a 5v6 line. With a bit of current I found a transistor heating up on that line (labeled T1 and 113 as on pic).
    After removing this guy, I got a value of 0.7 in diode mode on that 5v6 line, which before had 0.02 or something like that.

    I tested powering it up without the IC, and the speaker turns on and stays on, and works fine

    Still, I need to replace this transistor....
    06-18-2025, 02:34 AM
  • Loading...
  • No more items.
Working...