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  1. Tha fios agaibh

    oscilloscope LEADER 4081= KENWOOD CS-5135 DOES NOT CHECK THE BRIGHTNESS OF THE TRACE

    Hola Quinoara, Have you checked Q405, Q407 and diodes in the vicinity of the intensity portion of the circuit? Are you using the diode check mode or just measuring in ohms?
  2. Tha fios agaibh

    Swing Gate Opener Help

    Have you checked the fuses?
  3. Tha fios agaibh

    British Television?

    We (in USA) do have public commercial free stations (PBS) that are funded in part by taxes but it's mostly from donations of the public. Although free, we pay the price for broadcast television by having to endure more commercials than in the UK. ....Lord help anyone without a dvr to skip all...
  4. Tha fios agaibh

    Make illuminated switch light up dim when off then normal when switched on

    It's could be a problem if current is much higher than the original circuit. Even so, it may not even send a fault given the fact that it's only occasionally in the "on" position. Good advice from bluejets, I would just add to buy a variety pack where you can experiment with different resistor...
  5. Tha fios agaibh

    Parallel resistance

    I'm not familiar with canbus but I believe it would degrade the data signal strength. The purpose of a termination resistors are to reduce ac noise and interference imposed on the network.
  6. Tha fios agaibh

    Parallel resistance

    If you put 3, 120Ω in parallel it equals 40Ω. Paralleling more resistors will only make it even lower.
  7. Tha fios agaibh

    Parallel resistance

    If you wanted to leave the internal 120Ω inside the cluster, you could change just the 2 resistors to 237Ω to achieve the desired 60Ω resistance.
  8. Tha fios agaibh

    Parallel resistance

    3 ,180Ω resistors parallel will give you 60Ω
  9. Tha fios agaibh

    Comedy Thread

    I'm laughing imagining the looks you'd get walking into a veterinarian office. That "stabilizer screw" would certainly take the exuberance out of anything.
  10. Tha fios agaibh

    Transformer replacement !

    ...so, Goldilocks installed the first transformer and said "this one is too big!" And then she installed a second transformer....
  11. Tha fios agaibh

    Transformer replacement !

    You want the same secondary output voltage(s) and capacity (voltamp rating) as the original 230v. Post a picture of its specs.
  12. Tha fios agaibh

    Newbie Q: Can I repair this Sunbeam heated throw?

    Here In the USA, Firemen and even Fire Marshalls governing them don't have any real electrical qualifications or direct authority. They do perform fire inspections on occasion that covers electrical things like overloaded outlets /too many cords plugged in, emergency lighting, smoke detector...
  13. Tha fios agaibh

    Electronic door lock is safe?

    I've got electronic locks which have the electronics on the outside and locking mechanism which opens mechanically from the inside. Kind of like how you can open your car door from the inside with a dead battery. If it's an electrical striker it should default open on power loss according to...
  14. Tha fios agaibh

    Two relays in series with flyback diode.

    Probably a more likely scenario, of which a redundant relay to kill power is an option. I don't know if it would suit this application, but another approach is to use logic to monitor the relays. For instance If output turns on or off, you monitor an input off the relay contacts wired in...
  15. Tha fios agaibh

    Newbie Q: Can I repair this Sunbeam heated throw?

    Funny, I made the opposite resolution. You might be able to fix it depending on your patience, skills, and luck. Take it apart, and take some close up pictures of the board. Just don't plug it in until after you acknowledge the dangers of working on electrical equipment and the hazards...
  16. Tha fios agaibh

    IR IMAGING DEVICE on the cheap

    I've got an expensive Flir camera but alcohol works just as good for finding shorts on circuit boards.
  17. Tha fios agaibh

    Two relays in series with flyback diode.

    Even more than that. The time delay fuse would take about 17 seconds to clear @ 2a, or 33x longer than the fast blow!
  18. Tha fios agaibh

    Grundig YB500 World receiver fixup and panelbeat

    I don't know. That R may not be a logo but some product code? Any marks on the other side? If nothing comes up.... pull it and measure its capacitance.
  19. Tha fios agaibh

    Grundig YB500 World receiver fixup and panelbeat

    73sdeEdd told me the odd ball 6.3v rating is because it's a decade from other standard voltage ratings. 6.3v, 63v, 630v.... Something to do with the manufacture process I presume.
  20. Tha fios agaibh

    Grundig YB500 World receiver fixup and panelbeat

    Standard voltage ratings. As long as you meet or exceed that rating your fine. Higher voltage ratings are better but that can mean a physically larger caps. Newer caps can have higher voltage ratings than were available (comparable physical size) than years ago. So if you have the room to...
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