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  1. Minder

    2 latching relays, 2 pushbuttons, 2 dc 5 Volt motors and 4 limit switches

    They only operate in the reverse biased mode, as soon as the motor moves off the limit, they are both closed. i.e. Producing a short across the diodes. Only Forward biased momentarily.
  2. Minder

    DC Motors and speed control

    So you need a larger motor, rewinding is not going to achieve it!
  3. Minder

    DC Motors and speed control

    The procedure when re-winding a motor is the count turns of each winding removed. Probably not worth the effort for a small motor such as that, in light of motor replacement costs .
  4. Minder

    Servo Waving!!

    No more, or similar as a IR device which usually require two wired devices.?
  5. Minder

    Servo Waving!!

    Why not use a Proximity sensor.?
  6. Minder

    Servo Waving!!

    By 'Servo' what form does it take? RC? PID motion type? Is it, and/or the load capable of immediate reverse? Have you looked at the option of uni-direction mechanism similar to auto wipers method.
  7. Minder

    Forum Upgrade & Merging with Maker.pro

    I use https://maker.pro/forums/whats-new/posts
  8. Minder

    New Format

    Likewise, my Lap-top and desk-top
  9. Minder

    New Format

    Gone? No Like-It option for a post?
  10. Minder

    Forum Upgrade & Merging with Maker.pro

    I'll second that!!
  11. Minder

    Forum Upgrade & Merging with Maker.pro

    If its right, We can always change it! :confused:
  12. Minder

    A simple electric fence idea

    Unless this is sourced from some isolated supply, the circuit is dangerous for anyone coming in contact.
  13. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    I have done the same, if you are careful, it can be re-used. Wind on 10t of any gauge wire to find out the turns/volt. No need to connect to any other winding. But when you wind on the final overwind and connect to the existing winding, make sure it is in the same wind direction , otherwise you...
  14. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    Yes, after modifying, wrap with some kind of similar material, detect the 110v 'secondary' winding and add series turns accordingly. The case should be earth grounded in most jurisdictions. Especially now you do not have isolation with this kind of device.
  15. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    How many conductors enter the transformer? If only three, then it could be a auto-transformer. Or does it have four all together? If four, measure the resistance between all and see if they are isolated from one another..
  16. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    Well if you are thinking of modifying it that is the best kind to do it with. Toroidal. ! You just need to remove the outer insulation wrap and wind on what you need, find out the turns/volt like I said, they are much less on a toroidal, about 2 - 3 t/v Use the same gauge as the existing...
  17. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    Something wrong there? It is not even producing the label value? Are you in N.A.? I know Japan is both 60hz & 50Hz but there should not be that discrepancy? All the equipment I have installed of Japanese origin, has had a 10% voltage tolerance rating.
  18. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    ...Also this type of device has at least a 10% voltage rating tolerance.
  19. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    What I usually do is remove the outer insulation and determine if there is enough room to add windings, you require increasing the secondary by 10v, as there is usually ~5t per volt, that would equal around 50 turns, what I do is wind on a 10t test winding and measure to determine the T/V The...
  20. Minder

    Increasing the output voltage of a step-down transformer by reducing the number of coils

    The down side for me if this is a E/I lamination TXFR is that the pri is wound on first, which would mean removing the secondaries. I have 'modified' many over the years, both EI and Toroidal (easier), and never touched the PRI on any of them.
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