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  • Author Author: kellyhensen
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Win a Tenma Power Supply

Congratulations to our winners!

Wow! You guys came up with some really creative ideas! There were over 100 individual ideas submitted and they were a blast to read through.

 

The winner of the Tenma Supply is !

His submission literally made James laugh out loud: turning the supply into a mouse to scare a cat.

 

Congrats on your new supply!

 

But that's not all! We're going to find some element14 Community swag for the following honorable mentions:

 

This giveaway is closed.

Now that you know the basics of how to use a power supply, wouldn't it be great to have one to use on your very own bench?  Well, you are so lucky because James has one to give away!

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James is always looking for novel ideas for how to use the equipment on his work bench. . . so in this contest, he's asking for ideas on the most unique use for a power supply that maybe isn't just using it as a power supply.  (I don't think he means gutting it and using it for a potted plant.)

 

Add your suggestion in the comments below (no later than Friday, November 1) and you're entered with a chance to win.

 

James will select the winner and announce her/him on this page no later than November 14, 2019.

 

Learn More about the Tenma Power SupplyLearn More about the Tenma Power Supply

 

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Parents

  • In our laboratory we have a setup, where we can rotate a sample with attached probe inside huge electromagnet. The sample is turned using stepper motors (connected with non-magnetic turning table using system of belts), that are controlled by dedicated control device (that provide also absolute positioning and PC interface). Unfortunately steper drivers involved in the device are PWM controllers, and the noise generated by this switching caused interference with precise measurement setup (involving lock-in amplifiers). In order to continue measurements we decided to build an improvised non-switching stepper driver.

    This involves:

    1. Two variable high-end power supplies (acting as voltage controlled voltage sources)

    2. NI-USB measurement card, which together with PC software provides an interface between original controller and analog control inputs of power supplies

    3. Original stepper motor controller with switching-mode stepper drivers disconnected

     

    For test purposes we used an MSO as a signal generator to drive power supplies.

     

    Is it over-engineered and over-complicated? YES

    Is it over-rated? YES

    Does it work? YES

     

    So everything is OK. But we are pretending to get a title for making the most overrated and most over-sized stepper motor controller image

     

    Here is a video presenting the proof-of-concept using the MSO.

     

     

    And... this was done... a month ago... And... we still use the setup as we are waiting for someone to design a new stepper motor controller - without PWM that was ruining our measurements image

Comment

  • In our laboratory we have a setup, where we can rotate a sample with attached probe inside huge electromagnet. The sample is turned using stepper motors (connected with non-magnetic turning table using system of belts), that are controlled by dedicated control device (that provide also absolute positioning and PC interface). Unfortunately steper drivers involved in the device are PWM controllers, and the noise generated by this switching caused interference with precise measurement setup (involving lock-in amplifiers). In order to continue measurements we decided to build an improvised non-switching stepper driver.

    This involves:

    1. Two variable high-end power supplies (acting as voltage controlled voltage sources)

    2. NI-USB measurement card, which together with PC software provides an interface between original controller and analog control inputs of power supplies

    3. Original stepper motor controller with switching-mode stepper drivers disconnected

     

    For test purposes we used an MSO as a signal generator to drive power supplies.

     

    Is it over-engineered and over-complicated? YES

    Is it over-rated? YES

    Does it work? YES

     

    So everything is OK. But we are pretending to get a title for making the most overrated and most over-sized stepper motor controller image

     

    Here is a video presenting the proof-of-concept using the MSO.

     

     

    And... this was done... a month ago... And... we still use the setup as we are waiting for someone to design a new stepper motor controller - without PWM that was ruining our measurements image

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