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  1. Externet

    Wanted: Wanted: Ramsey AR2 receiver, kit or assembled.

    Hi. If you have one of those receivers behind the spider webs, let me know
  2. Externet

    Simple SW receiver on 3V?

    From many available in the market : ---->...
  3. Externet

    Not-reversible fan motor ?

    Hi These common fans spin direction is not reversible, or are they ? Yes, they can be flipped. But when permanently mounted in a ceiling duct, it is too much to ask. What is the proper name for these type of motors ?
  4. Externet

    Selfie poles...

    Thanks. There is a button in the handle. Wired or wireless types trigger the camera. Good, I know now :)
  5. Externet

    Selfie poles...

    Never used one, know nothing about. How is the camera triggered from the pole handle to take a picture ?
  6. Externet

    Solar charge controller question

    If the 24V charger controller diverts the panels energy to your 48V water heater, do not expect full heating.
  7. Externet

    Solar charge controller question

    What do you mean by 'shunts' ?
  8. Externet

    Mobile Battery Explosion

    'Outside the box', a true battery may have its charge controller damaged by static and cause such mishappen. A 'protected' single cell has also some components subject to damage by static discharge. A pure bare cell, unlikely, unless the static discharge hits/affects a built-in-device managing...
  9. Externet

    How is a brass gear removed from a DC motor?

    The tool could be more costly than a dozen motors, So destroy the bad gear with
  10. Externet

    Help with Tektronix TDS-3012B Oscope

    I would first perform the same test in another room, house, environment, mains power, to compare, with as many things as possible around it off.
  11. Externet

    Make a flow switch from a hall-effect flow meter

    There is many like this: ----> https://www.dhgate.com/product/g3-8-flow-sensor-screw-tooth-holzer-flow/435575250.html#s1-3-1;searl|1497200662
  12. Externet

    weird BNC connector

    Hi Steve. I have PL259 plugs unthreaded, but springy friction contacts to make the connection. They are for fast connect/disconnect in equipment tests or manufacturing/calibration, where you have to plug/unplug hundreds of times during a production work day doing only push-in pull-out. I...
  13. Externet

    Lead acid battery

    Cyclic means the battery supplies power often to something; as an example; a shaving machine, a nightly operated lamp... Stand-by is when used only in sporadic situations, like a uninterruptible power supply, an exit emergency lamp when power fails... 0.15C means to be charged at 0.15 times the...
  14. Externet

    My Kenwood RXD v323 display got too dim totally black

    Perhaps has sucked too muck darkness along the years it has been on; it may be filled full. The service manual in available.
  15. Externet

    Replacement Optical Isolator

    This link has resided in my bookmarks for several years. Perhaps is of help : ----> https://www.electronicsurplus.com/ituwa-n-110-2-optoisolator-neon
  16. Externet

    Replacement Optical Isolator

    ----> https://www.ebay.com/sch/i.html?_nkw=vactec%20vactrol%20isolator
  17. Externet

    6v LED brighter with 3v battery

    Measure cells voltage when the led is on. CR2032 has more current capability; lower internal resistance.
  18. Externet

    Suggest hard to find switch component, please ?

    Too much to rip the switch. These are scuba items. Price is pumped well beyond reality, just because they can. Some places have them at reasonable price : ---->...
  19. Externet

    Suggest hard to find switch component, please ?

    Hi. Does anyone know a vendor source for a sliding magnet captive in a slot component for a trough-wall activation of a hall effect sensor or reed; that can be glued/attached ? The one in first picture is molded into the body; am looking for something that can be attached to an existing wall as...
  20. Externet

    Types of LED bulbs inside circuitry ?

    Hi. Some plain 120VAC LED bulbs do light up faintly as intended when connected this way, some do not. What could be different inside the bulbs, is there different circuitry 'architectures' in the industry ...
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