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  1. KrisBlueNZ

    Need Some Help Figuring Out How to Use the PDSP2112

    That's great! :-)
  2. KrisBlueNZ

    Multimeter (Vc88c) Reading Temperature Wrong

    There are lots of ways to check a fuse without using a multimeter. In this case you can check it by (a) connecting your temperature probe, selecting the temperature range, and bridging the fuse with a pair of pliers - if the temperature indication comes right, you know the fuse is open, or (b)...
  3. KrisBlueNZ

    Multimeter (Vc88c) Reading Temperature Wrong

    It looks like the temperature probe connects through the µA/mA connector. Check that the fuse on that connector is not blown. I have no other suggestions.
  4. KrisBlueNZ

    Newbie in great need of help ! ! !

    Many uncontrollable factors affect the range.
  5. KrisBlueNZ

    Need help with circuitboard design

    How about trying one of the web-based layout packages? See https://www.electronicspoint.com/resources/list-of-eda-packages.39/
  6. KrisBlueNZ

    Soldering problem

    That will be interesting!
  7. KrisBlueNZ

    Boost Converter with mc34063

    I agree with the others that the most likely problems are (a) the inductor is saturating - you need an inductor rated for at least 5A saturation current; (b) the input and output capacitors must be low-impedance, high-ripple-current types; (c) replacing a current sense resistor with a piece of...
  8. KrisBlueNZ

    Soldering problem

    Additive, and addictive :-)
  9. KrisBlueNZ

    Fix 250 watt Dayton Plate Amp or Convert 400 Alpine Car Sub Amp for Home Use

    I'd go with fixing the Dayton amp. Keep the 400W subwoofer amp in a cupboard until you get another car. What's the model number of the Dayton amp? What are the fault symptoms?
  10. KrisBlueNZ

    Hello Everyone

    Hi there and welcome to Electronics Point :-)
  11. KrisBlueNZ

    Soldering problem

    Yep, that's just one of the bits of good advice in that first video.
  12. KrisBlueNZ

    Soldering problem

    Cool video Bluejets! That first one is excellent and I've subscribed to him. I used to cringe every time I heard an American saying "soddering" - THERE'S AN ELL IN THERE! But I'm starting to not notice. Should I be worried? LOL
  13. KrisBlueNZ

    How to modify switch to always be on.

    OK, I missed that. Yes, it probably has two elements with a common terminal. That allows for three power levels. Each element will be rated for the full mains voltage. As before, the only question is whether the heating pad is rated for continuous operation at the power level you're using. Can...
  14. KrisBlueNZ

    Soldering problem

    Sanding the tip is probably not a good idea unless it's a really cheap and nasty one. Good quality ones are plated AFAIK and you shouldn't sand the plating off! Good! I use a different 80/20 rule for cheap Chinese products: 80% of the time it will last less than 20 days :) Just kidding...
  15. KrisBlueNZ

    How to modify switch to always be on.

    Sorry for dropping out - I must have lost track of this thread. I can't tell what that switch does, without more information. There are four wires connecting to it. And I guess there are two wires coming from the mains plug, and there are two wires going to the board, and two wires going to the...
  16. KrisBlueNZ

    Need Help Understanding Hi Current Add On For LM78XX

    The protection diode is connected with its anode to the output and cathode to the input (for positive regulators). The PTC devices you're talking about are called PTC Resettable Fuses and have various names depending on the manufacturer - Polyswitch, Polyfuse, and others...
  17. KrisBlueNZ

    Soldering problem

    If the tip is slightly red, the soldering iron is FAR too hot! That item on eBay is a complete soldering/desoldering station! If it performs like a name-brand one, it's an incredible bargain! So I suspect it won't. But it might still be enough for this job. I can't say - but I will say what I...
  18. KrisBlueNZ

    Repair DSi XL power soket problem.

    I see. It looks like those pads don't connect anywhere electrically; they're just there for rigidity. So you don't need to replace them. You do want to maximise rigidity, but most of that comes from the two tabs that go through the board. You could add rigidity by gluing the connector in place...
  19. KrisBlueNZ

    Need Some Help Figuring Out How to Use the PDSP2112

    I don't understand the question. Do you mean should you move the PDSP2110 from breadboard to prototyping board? Yes I think so. I'm pretty happy with the hardware. The only hardware changes you'll need to make in the future are the unforeseeable ones :-)
  20. KrisBlueNZ

    Chrono Sensor Help Please

    OK, so the projectile is fired through a cylinder and breaks one beam then the other? That board you have will be the LED board, not the photodetector (phototransistor/photodiode) board, because it only has two wires going to it. The photodetectors will be on the opposite side of the cylinder...
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