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  1. Minder

    TORQUE DETERMINATION

    Not the ones I have! http://www.industrial-electronics.com/AC-DC-motors/57_Shaded-Pole-Motors.html M.
  2. Minder

    More questions about transformers.

    Largely the confusion arises in N.A. because of the terminology of using 'Ground' as a term for P.S. common, system common and for earth ground. Even schematics show an earth ground symbol whether common is Earthed or not. For countries such as the UK, the term 'Earth' is used if referring to...
  3. Minder

    More questions about transformers.

    Keep in mind that after rectification and capacitor smoothing the resultant DC voltage will be 1.414 x the applied AC. M.
  4. Minder

    TORQUE DETERMINATION

    Small ceiling fan motors are usually shaded pole motors and do not have that much torque. A crude way would be to remove the fan and measure the current, replace the fan and re-measure The torque is directly proportional to current. But other factors make this an imprecise method, especially...
  5. Minder

    More questions about transformers.

    The practice of earth grounding a secondary is commonly done where say a high voltage supply transformer is used for a local 120v control circuit as in industrial machines etc, once you isolate by this method, the earth grounded neutral is lost, so it is customary to connect one leg of the...
  6. Minder

    Someone please help clicking relay

    It is unusual, but it appears that BEMF diodes are not fitted to the relays , which means you would need to place the meter across the relay coils themselves, on the reverse side of the board. M.
  7. Minder

    Someone please help clicking relay

    Presuming the relays are DC operated, I look first for the usual diode placed across the coil, it is usually adjacent to the relay, a meter across the diode when the relay is activated will sometimes tell if it is a low voltage problem, or the device operating the relay is turning on/off, relays...
  8. Minder

    name of this part

    If not the type used for peg board then Google Mirror Plate Bracket. M.
  9. Minder

    Coil problems...

    Did you try a local motor winding shop, they will often oblige with end of roll qty etc. Also i have found deals on ebay in the past. M.
  10. Minder

    stepper motor speed and torque calculation

    Go to the Gecko stepper site, they have a sizing details. M.
  11. Minder

    Question regarding getting a job as electronic technician

    If employers are not interested, check out free lancing as a technician, if there is any kind of manuf. industry there, often the Maint. electrician or electrical contracting companies are not familiar with Industrial electronics. That is how I made my money in semi retirement. When a critical...
  12. Minder

    Hello all

    Me too! Electrical and Electronics for Morris Motors. M.
  13. Minder

    from dimmer to switch (without mass?)

    Molto bene!;) M.
  14. Minder

    Mosfet driver IR2104 High out not working

    Value calculator. http://www.silabs.com/support/Pages/bootstrap-calculator.aspx M.
  15. Minder

    from dimmer to switch (without mass?)

    Prego. If one is the live conductor and the other the lamp conductor, then yes. M.
  16. Minder

    Killing SSR (relays) - Need to understand

    Is it possible to do an autopsy on one of the failed SSR's to see if it is possible to see exactly what failed, is it just the Triac? Oops i see some is like minded. M.
  17. Minder

    from dimmer to switch (without mass?)

    Yes that would make sense to me. That old symbol does not look like ground to me, but the controlled live output, ground is usually the metalic enclosure etc. That drawing on the RH side looks correct. If by ground you mean Neutral then usually the neutral would already be at the lamps so...
  18. Minder

    from dimmer to switch (without mass?)

    The ground just goes to the mounting box, if you just require to switch a single conductor then it looks like L will switch to either of the output A1 or B1, if so just pick one. What is 'Mass'? M.
  19. Minder

    Killing SSR (relays) - Need to understand

    I think I would be inclined to mount a really hefty stud mount Triac to a nice heat sink. To mirror the SSR a zero-crossing Driver such as a MOC3162 could switch it. M.
  20. Minder

    3 wires circuit

    If both loads were equal, the current in the neutral would be zero. If unbalance you see the difference in the neutral. M.
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