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  1. Kiwi

    clock movement battery

    The battery is only for backup should there be a power outage. Why not use a normal 1.5v battery powering the clock through a Schottky diode. The ~0.3v drop across the diode should still leave sufficient voltage to run the clock for a very long time. The output from the buck converter could also...
  2. Kiwi

    LCD voltmeter for my power supply

    Suggest that you put reverse biased diodes across both the red and yellow wires to the black wire. Inductive spikes will kill these cheap meters.
  3. Kiwi

    Honda ES6500 Generator -- Hard to start

    If tapping the starter makes it work, then the most likely problem is worn brushes. Tapping jiggles the worn brushes in their holders and the springs push them back into contact with the armature commutator. Usually will only get one or two starts before you have to do it again. Be careful how...
  4. Kiwi

    Help with work to finish my college. Help me please!

    I also only see one date - Jan 2022. There seems to be a few old posts getting resurrected recently.
  5. Kiwi

    Digital Multimeter DT9205A

    Battery is the first thing to check.
  6. Kiwi

    Are There 3 Volt MultiMeters?

    Just interested in why you don't want a 9v one.
  7. Kiwi

    Flimsy

    The joys of progress. The old stuff used to be steel and bolted together, now it seems to be mostly plastic and riveted or clipped together. We are rapidly becoming a throw away society. As Harald said, much stuff is cheaper than it used to be. Maybe I am just getting old?:D
  8. Kiwi

    Auto Battery Charger Blowing Fuses

    This thread was about six months old, so has probably been resolved, or disposed of.
  9. Kiwi

    Audi cluster repair

    Both methods will work, but there are a couple of issues to be aware of. Brightness. Does the car have a dimmer control to adjust the brightness of the bulbs to suit driver preference? The choice of the series resistor may have some impact on the LED brightness, but they will basically be on...
  10. Kiwi

    Icom 260A memory back up battery issue

    Sorry, I will pass and kick for touch on this one.
  11. Kiwi

    Didn't make a note of single subject in engineering, graduating soon what to do?

    This was a 12 month old thread.
  12. Kiwi

    I think I might be dumb.

    PNP output will supply positive. Outputs will connect to the positive supply. Connect one LED terminal to the transducer output and the other LED terminal to negative. It is a DC/AC LED so polarity is not important. Pretty sure this is how your IFM transducer will work using pin 4. Pin 4 is...
  13. Kiwi

    Variable DC

    Amazon and Ebay have lots of these PWM speed controllers.
  14. Kiwi

    Surge protector circuit

    A commercially available UPS from a reputable brand would be the best protection for the AC supply. A close lightning strike will probably just blow any MOV's apart. Are you in a high lightning area?
  15. Kiwi

    What's 'fast enough'?

    The government here in New Zealand has installed nationwide fibre. Installation was free to the homeowner. We were originally on a 100/20Mbps fibre plan that was fast enough for us. Our provider then gave us a free upgrade to 1Gbps(950/500Mbps). We can easily have three different YouTube HD...
  16. Kiwi

    Battery resurrection

    Has the battery recently been fully discharged, or has it been sitting around for ages in a discharged state? How old is it?
  17. Kiwi

    doubt smartphone battery

    DROPPING THE PHONE WITHOUT A COVER WILL DEFINATELY SHORTEN ITS USEFUL LIFE! :confused:
  18. Kiwi

    Automotive related question regarding specificity of diode.

    I have seen this problem quite a few times. The current flowing back through the warning light from the alternator is enough to keep the ignition relay energised if there are no other loads directly off the ignition switch. Usual fix is to put a diode in series with the alternator warning...
  19. Kiwi

    automotive hard

    Most electronic components seem to have more issues with high temperatures, rather than low temperatures. Low temperatures can also put a bit of stress on the copper links on circuit boards due to shrinkage. Vibration is one of the biggest issues in automotive applications. Another issue is the...
  20. Kiwi

    Merry Christmas

    Hi Dave, How's life in Sydney? Off to Bondi to get some sunburn after lunch? Sounds like some of the northern hemisphere is getting hammered by bad weather, so won't be the most pleasant Christmas season for them.
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