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Old 03-14-2011, 08:19 PM #1
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Default flex drive/rkcstr test problem please help

Hello. I have a flex drive 5 that I am attempting to set with a rkcstr test load. I am confident in my soldering skills from other hobbies although this is the second laser driver I have dealt with and the first test load. I am using a 18650 battery and have the flex bridged for the ~450 - 1.1 range. When I read the mV on the test load with my meter in the 2000mV range I get a reading of 3. If I twist the potentiometer it will rise to 4. I am unsure why this is happening. I have done rigorous research for this project but have come to a problem I cannot understand. Thank you. -Michael


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Old 03-15-2011, 02:16 AM #2
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Default Re: flex drive/rkcstr test problem please help

Any chance you can post pictures of your setup and meter connection?
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Old 03-15-2011, 05:02 AM #3
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Default Re: flex drive/rkcstr test problem please help

I actually figured out the problem but now that I am a member of this forum maybe I will have something to contribute to others. Thank you for your quick reply by the way. I had my resistors soldered on the test load with no orientation. I did not realize there was a polarity issue. I came back to delete this post but could not figure out how.
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Old 03-15-2011, 05:27 AM #4
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Default Re: flex drive/rkcstr test problem please help

Glad that you were able to get it working correctly.
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Old 03-15-2011, 09:53 AM #5
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Default Re: flex drive/rkcstr test problem please help

Quote:
I had my resistors soldered on the test load with no orientation. I did not realize there was a polarity issue.
Resistors, their orientation and polarity issue?
Or did you mean the diodes when you said resistors?
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