Search results

  1. B

    PS5 power supply

    Bad idea...........:eek:
  2. B

    PS5 power supply

    You need to isolate each device. Tests in circuit will be inaccurate. High frequency windings can appear to be shorted to those who know nothing about smps. More likely bad/leaky electrolytics or any X2 caps rather than the small blue ones. Switcher IC's in these power supplies work really hot...
  3. B

    What incandescent lamp wattage to buy for PSU troubleshooting ?

    100w series on input (mains) will, in many instances, protest against further fuse blowing and other damage and have the ability to run the whole unit to check outputs. Anything smaller quite possibly will not do both. Pretty certain the Op has the idea by now.
  4. B

    What incandescent lamp wattage to buy for PSU troubleshooting ?

    Series lamp goes on the input mains. Any fault which would normally draw excessive current and cause the mains fuse to blow, now will have current/voltage limit input. Best not to get confused and overthink the issue.
  5. B

    NiCd to Li-ion battery pack conversion successful but has one strange issue

    Doesn't bother me in the least.....if you can't face facts is your problem, not mine.
  6. B

    Need help with a project

    Look to me like fully insulated tab type, no requirement for further insulation. More detail required on "doesn't work ". Does anything show any sign of life??? What supply are you running it from and what is it designed for? Are you using any load in your "test"..?
  7. B

    NiCd to Li-ion battery pack conversion successful but has one strange issue

    Learn from what problems you have caused yourself by trying to save a few bucks. Your description fails to mention the quality of the replacements using specs. A quick Google will show just how many of these cells are from the dodgy brothers store. I'd like to say it seems you have learned...
  8. B

    What incandescent lamp wattage to buy for PSU troubleshooting ?

    Rubbish...series lamp will light full on any short.
  9. B

    MIDI Sound module no output.

    Still no response from the suggestion that you probably connect it arse about with the dodgy power supply (negative to tip)
  10. B

    What incandescent lamp wattage to buy for PSU troubleshooting ?

    Yes it does. Further down the page under specs. AS for aliexpress, one of the following will get you started. (Color 1 ...100w 220v) https://www.aliexpress.com/item/1005005591154182.html
  11. B

    Diy analog sound chip for dc HO model locomotive. Help!

    Surely you can find an old phone with bluetooth..must be gazillions around you could get for next to nothing.
  12. B

    Diy analog sound chip for dc HO model locomotive. Help!

    I have seen 25mm square cube bluetooth amps which have been used in model trains such as this. They are relatively cheap (maybe 20-30) and self contained with their own rechargable battery. Communication with the amp is done via any phone and one can use any sound file as the file comes from the...
  13. B

    MIDI Sound module no output.

    That would be unusual for most power adaptors. Wiki says it's 9v 600ma so a 1000ma should be ok ...BUT...is it the right way around. https://en.wikipedia.org/wiki/Roland_MT-32 Actually, this link claims it is positive tip....... https://www.ebay.com.au/itm/282670174698 Our power supply has...
  14. B

    Cable voltage drop - capacitor reservoir

    Same same..... also depends on the power requirements and the circuit in question. Will a wheel roll up hill...yes, in certain circumstances...... no in others.
  15. B

    Connectors for UBEC

    As ever, best if you provide a sketch of what you think the proposed connection will follow. Show any battery size in voltage and current ability.
  16. B

    In Wind Turbine, DC Motor is rotating from battery energy, discharging the battery after charging.

    Welcome to the world of reality where all the greenie crap stops...... At what speed are you driving the dc motor..??? You can expect to run it at perhaps 10,000rpm to do any good what-so-ever. For one thing it's a 12v motor...... Think along the lines of an alternator...much better in the...
  17. B

    Remote region weather radio scanner antenna

    You've been here long enough to know....show a photo of what you have. Crystal balls are all gone now-a-days.
  18. B

    Coffee pot component.

    Thet're not there for decoration..........:rolleyes::rolleyes:
  19. B

    Coffee pot component.

    Note:- crimp new one back in, don't solder for obvious reason.
  20. B

    Turn On and Off a Smaller Voltage from a Larger One

    Once again, show the circuit requirement. Possible to couple together with opto isolator.
Top