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  1. Martaine2005

    Problem in LM2576 circuit

    Have you got a diode across the relay coil? Martin
  2. Martaine2005

    Activate transistor with piezo disc

    Hope you didn't spill the grapes too!:eek: Martin
  3. Martaine2005

    Kenwood sat nav DNX5280BT keeps rebooting!

    Hi Graphite, the video is fine now. What camera did you connect to the system? Is it the proper/recommended accessory or third party? How is the camera wired for power? External wiring or from the system itself? I say this because many 12v cameras have quite a range of amperages from say, 250ma...
  4. Martaine2005

    NEED HELP!! Cant find this little part

    Yes, definitley the correct logo Edd.
  5. Martaine2005

    Please help me identify this connector.

    Hi Jesse, I have found similar connectors but nothing identical unfortunately. More than likely made specially for the board designer. What is the board? I can it has some kind of transceiver below the connector. Martin
  6. Martaine2005

    need help with purchased items

    I second the above!!! Martin
  7. Martaine2005

    NEED HELP!! Cant find this little part

    I think The OP needs to zoom out on his board picture to see other components around it. Also, it would be good to find out how the OP knows it has 160v on the input. Martin
  8. Martaine2005

    Some way to disable auto-standby on TV soundbar

    Hi Andaho. What markings / numbers are on the chip UNDER the white label? Probably a micro-controller pre programmed. Also, it appears that a lot of standby ic's are actually voltage regulators with built in standby. Can you get any photos of the power board. Martin
  9. Martaine2005

    led driver selection for project

    That looks really nice John. 2K7 resistors on each led..They will still be glowing in 1000 years. Martin
  10. Martaine2005

    DIY led driver help

    How are you going to do that? Martin
  11. Martaine2005

    LEDs on cars license plate frame

    I wouldn't worry too much Dave. Mythbusters did a whole show on it and failed miserably. The only idea that kind of worked was Jamies' 007 style rotating plate... Martin
  12. Martaine2005

    NEED HELP!! Cant find this little part

    Hi Adam, It could be an AP3103 sot23-6 package. The datasheet is here. Might not be though too.... Martin
  13. Martaine2005

    LEDs on cars license plate frame

    Hello, Personally I would just connect the led brake light as it should be connected. If you have a boot (trunk), you can easily run another wire to the original brake lights and use a scotch block connector. Or if the car is a hatch back, the existing wires will come through somewhere near the...
  14. Martaine2005

    JFET Depletion Regions

    Hi Vivek, Probably 3 or 4 members will be here soon to explain all. But be warned! It cannot be explained properly without the jargon. Grab a large drink and sit back. It's gonna be a bumpy ride!!! Edit: I just read this HERE and have it wrong too. Martin
  15. Martaine2005

    How a BJT Transistor works (base current version)

    Good one dear, I think it's time to start WW3. https://www.electronicspoint.com/threads/jfet-depletion-regions.275824/ Martin
  16. Martaine2005

    How a BJT Transistor works (base current version)

    I like that!! But what was your PNP? Just curious sir!! I have still got 6 pages to read yet. Martin
  17. Martaine2005

    Roberts radio

    Hi Graham, It looks like you will have to dismantle the radio and visually inspect the boards components and switch connections. If we can get it working without interference while on DC adaptor, then try and see why the batteries drain so fast. You will need a multimeter and probably a...
  18. Martaine2005

    Thinking about fully discharging (deep cycling) my power tool batteries to try and revive them

    Nice info there Bluejets. I have to admit that the 'black wire problem', I have never heard of.. Please share more info. Martin
  19. Martaine2005

    LDR, Transistor, and Electromagnet

    Hello, The transistor is an NPN. The LDR and resistor depend on when you want it to switch on or off. Martin
  20. Martaine2005

    led light bar

    Just a side note Clue. It is rather difficult reading your posts without a full stop. Can you try and insert grammar if possible too? No offense, just makes reading your posts easier to help you. Martin
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