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  1. Martaine2005

    Help Identifying a transformer and it's use from a PC power supply

    Well Dave, probably nothing you can do or use it for. It was designed specifically for its intended purpose. Unless anybody else can add something here. Martin.
  2. Martaine2005

    Help Identifying a transformer and it's use from a PC power supply

    These transformers are high frequency. Typically in SMPS. Some look exactly the same as common mode chokes. There would be several of these in a SMPS. Covered in tape is also typical. Just two wires? I’d guess an inductor too, but it sure doesn’t look like one. Your picture has two coils. Both...
  3. Martaine2005

    Which pole is up?

    Lol, the earth spins at 14,000 Mph. So I’d guess that we have a 50/50 shot every 7,000 Mph. I thought Hall effect sensors automatically reversed polarity (poles). Martin
  4. Martaine2005

    Fixing Gimbal Control board for SG906 Pro Drone

    Sorry, can’t find info either. What’s that component top right (12v). Looks like it gets rather warm. Martin
  5. Martaine2005

    Help identifying manufacturer of a PCB

    It’s clearly February 2019. Has fuses for absolutely everything. And made in the good ole USA. Internal? External? I have no idea what it does. Somebody on the forum definitely will know though. Wait for their reply. Martin
  6. Martaine2005

    Help with voltage step-down (I am very much a beginner)

    The strip you have and the original module board are not going to work. It might be possible with boost converter and or a mosfet/relay. But the 3 AA batteries won’t last five minutes. Martin
  7. Martaine2005

    Clicking noise from cd player?

    Charley, you’ll need to open the unit up and visually inspect for the clicking sound. If it doesn’t speed up, its not on the rotating parts. The tray has teeth along it’s edge, check for foreign objects possibly in the grease (if greased). But a visual inspection (opened) and playing should...
  8. Martaine2005

    Clicking noise from cd player?

    Hi Charley poor, A clicking sound when playing?. Clicking as in physical clicks or amplified with the music?. If a physical click, there is obviously something rubbing/obstruction. You would have to open it and narrow it down by looking and listening. Normally it’s a tooth broken off one of the...
  9. Martaine2005

    Help with LCD 4 digit display

    Hehe, sneaky!. I never looked at the schematic. It is blurry when enlarged on my phone. It looks like blue by the leads. And I thought green was the multiplier and blue the tolerance. Thanks for clearing that up. Thanks @bertus , I have read that before. Never sunk in about the extra colour...
  10. Martaine2005

    Help with LCD 4 digit display

    @Harald Kapp can I ask how you get 1μF? Brown, black, green and blue? Does green and blue have no significance? Thanks. Martin
  11. Martaine2005

    Help with voltage step-down (I am very much a beginner)

    Do you have the specifications of the LED strip? What length will you use from the strip? Martin
  12. Martaine2005

    Help with LCD 4 digit display

    I have never seen one before. Could it be a dipped tantalum?. Martin
  13. Martaine2005

    Help with voltage step-down (I am very much a beginner)

    As @bertus said, resize the images. I think I now understand. But still think the 5v strip would have suited better to your application. Martin
  14. Martaine2005

    BATTERY RECHARGING DETAILS NEEDED

    RC battery packs 4.8, 7.2 and 9.6v (others too) generally have a ‘slow’ charger if bought as a set. These are roughly 300 mA - 600mA. We have ‘field’ chargers too. These are quick chargers and can be any combination from 1A - upwards. Never had a problem charging heat shrunk packs. Martin
  15. Martaine2005

    Help with voltage step-down (I am very much a beginner)

    Hi Brian, I think you will need to upload some very clear photos of the items you have. So, you have two Sabers? 1 runs off 3x1.5v batteries =4.5v. And 1 that runs from 12v?. The LED strip is 12v. Personally, you would be better off getting a LED strip that runs from USB, ie 5v to use with the...
  16. Martaine2005

    12v to 5v cctv

    The only way to be sure is to check the current requirements of both old and new cameras. You can check this by putting your multimeter in series with PSU and camera. If you do this indoors at the PSU end, then at the camera location. This test should give you an idea of any losses in the cable...
  17. Martaine2005

    Help with something I cant find info on anywhere!

    I like your style. But if you have resistors, why the 12v LEDs?. Just curious. Martin
  18. Martaine2005

    Camcorder white screen: how to fix

    I am glad your fault was only a ribbon cable needing re-seating. However, many faulty/damaged/blown components can and will cause a white screen too. Don’t assume a white screen will always be a ribbon cable. That by itself is false information but a good place to start your diagnosis and...
  19. Martaine2005

    12v to 5v cctv

    Good point and a good idea of placement. Martin
  20. Martaine2005

    small NiMH battery charger. is it possible?

    Ah yes. The link was to show the size is possible. Also much smaller. You just have to search and read the description. You can also find 2 or 4 cell chargers that you can cannibalise for the PCB. Martin
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