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  1. Minder

    12V speed controller / timer combined

    Another option is to reverse-engineer it and build a copy, there does not appear to be alot there! M.
  2. Minder

    12V speed controller / timer combined

    You most likely can get them as two small separate units, i.e. PWM controller and a timer on Ebay from China. If they work independently, if one in conjunction with the other then you may have to put something together with a couple of 555's. M.
  3. Minder

    MC33030 - does any one know of a drop in replacement

    I think they have been mostly replaced by small micro's with PWM function resources. You may find them on Ebay from Chinese sources, they seem to have quite a few obsolescent devices.;) M.
  4. Minder

    What are these 2 "extra" red wires for? Li-Ion RC Battery

    I think we get the drift!:rolleyes: M.
  5. Minder

    What are these 2 "extra" red wires for? Li-Ion RC Battery

    Got one and it works great, I have the mains or 12vdc fed version for use in the field. M. (Ex-Oxonian!).
  6. Minder

    What are these 2 "extra" red wires for? Li-Ion RC Battery

    $16.00 on Ebay 361912375476 M.
  7. Minder

    RS Logic AB PLC Timer Problem

    Not sure what the problem is as you describe it? Try programming a separate rung with another timer, or just test a rung with the timer in it. Post a sketch of the rung in question. M.
  8. Minder

    Scooter motor to power wood lathe

    As far as the T.M. motor, If possible I would go with one of the KB DC motor controllers available, these have the ability to reset the drive when you do a reversal by switching the motor leads, this means that regardless of the speed pot, the motor goes through acceleration. Also on a T.M...
  9. Minder

    Converting AC to DC motor

    Don't know where you got that from! Incidentally there are quite a few version of each under the banner of "AC or DC". The basic version of each is the AC induction motor and the DC brushed motor, they are completely different animals!. Having worked with motors and generators of all stripes...
  10. Minder

    Converting AC to DC motor

    For high HP a auto starter motor would give you plenty of torque, many of the later types are P.M. but the older style are wound field and being a series motor operates in a run away condition and should not be powered without load. But very high torque. Or there is a 12v bumper winch motor...
  11. Minder

    Need help finding replacement transformer for oven control board

    Thanks for the info, I suspect the difference in the secondaries are because one is loaded a little higher, most likely open circuit they would be nearer equal. M.
  12. Minder

    AC motor speed control

    It helps bowl a maiden over!:D M.
  13. Minder

    AC motor speed control

    Depends on the vintage, older ones were Universal motors that control with a Triac, the later ones are BLDC and require a more specialized method of control. You need to find out what type you have. Max.
  14. Minder

    Series capacitor on fluorescent 125w T12 light fitting

    I don't recall any capacitors on all my T12 fixtures? M.
  15. Minder

    AC motor speed control

    The only 1ph AC induction motors that use RPM control are typically shaded poles motors, fans etc, and this is done with a Triac style controller, most of the cap start/run motors do not control well this way due to dropping out of run at low rpm or on load. There are some PSC motors as shown in...
  16. Minder

    Pulse Width Modulation

    Still doesn't make sense as posted, if the motor -ve is still connected to the motor frame.? Motor connections do not look right. M.
  17. Minder

    Pulse Width Modulation

    The OP mentions an OLD automobile, so I would hazard a guess there is no solid state control back then, ;) I also assume from the OP that wiper control method is sought. Many of the really old models, either did it mechanically or even not at all. M.
  18. Minder

    Pulse Width Modulation

    The Mosfet in the PWM unit still has to be referenced to motor common. Which is also connected to auto 12v com. M.
  19. Minder

    Pulse Width Modulation

    There seems as though there is a conflict with the unit because the motor frame is at ground potential. You may have to see if you can isolate the -ve terminal on the motor from frame GND, or use a regular isolated motor, It may prove difficult to to do either. Unfortunately, generally auto...
  20. Minder

    Pulse Width Modulation

    There should be no reason why it would not work, post the schematic, why is the PWM unit Not being powered from the same supply as the wiper motor? M.
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