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A little tester to determine transformer PhaseDots with no scope or signal generator
A little tester to determine transformer PhaseDots with no scope or signal generator
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Old 29th September 2017, 09:19 PM   #91
mchambin is offline mchambin  France
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I juste use a multimeter.
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Last edited by mchambin; 29th September 2017 at 09:27 PM.
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Old 1st October 2017, 08:49 PM   #92
simon2a3 is offline simon2a3  England
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Quote:
Originally Posted by Mark Johnson View Post
Good on ya!

I expect you might find it amusing to poke around the board with an oscilloscope and observe the unexpectedly non-textbook waveforms here and there. "Why are there so many dadgum diodes?" may have an answer. (The answer might be: unnecessary waste).
I'm away from home at the moment but I'll have a look when I'm back. (Had to look dadgum up!)
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Old 10th November 2018, 04:38 AM   #93
SyncTronX is offline SyncTronX  United States
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PM also sent.
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Old 10th November 2018, 05:45 PM   #94
BenY is offline BenY
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Hi Mark,
Why not use an inductance meter to test the two loops in series compared with one loop only. If the inductance doubles then its within phase if inductance low/canceled, then it`s out of phase.

I have been using this method for years, anything wrong with it???
I will be happy to build the PhaseDots if it gives an advantage...
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Old 10th November 2018, 07:54 PM   #95
Mark Johnson is offline Mark Johnson  United States
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A little tester to determine transformer PhaseDots with no scope or signal generator
That's probably a good way to test it. People who have an oscilloscope and a function generator can use the test in post #1. People who have an inductance meter can use the test in post #94. People who have neither, can build and use PhaseDots.
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Old 15th November 2018, 09:34 PM   #96
SyncTronX is offline SyncTronX  United States
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A nice little kit was delivered by the post person today. I look forward to assembling and using Marks little kit.

Cheers,

And the Phasedot tester works. I've noticed that you can do it with three wires.
two on the primary and it will find evaluate the the polarity of the secondary. In this case a choke. yellows are positive.
Attached Images
File Type: jpg In Phase.jpg (310.7 KB, 84 views)
File Type: jpg Outof Phase.jpg (390.1 KB, 83 views)
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Old 17th November 2018, 12:51 AM   #97
Mark Johnson is offline Mark Johnson  United States
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A little tester to determine transformer PhaseDots with no scope or signal generator
Glad your PhaseDots tester went together with no problems and began to give enjoyable results, SyncX! Some people had trouble finding the clear-makes-green LED versus the clear-makes-red LED, good to see that yours got this little detail exactly right.
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Old 18th November 2018, 11:46 PM   #98
SyncTronX is offline SyncTronX  United States
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Yes Mark, The LEDs sometimes we get lucky and I had help. Imagine that.
Nice little kit and the suggestions in the thread were all good.
One thing I did when I clipped the LED leads to keep the gunk from
sticking to the holes when inserting, is to clip the Anode longer, that way
I wouldn't get mixed up.



The hardest part for me was finding my small soldering tip and thin
solder. I've got 10+ lbs of .050, .062 in 63/37 and 62/36/02 (ag) for big eyelet
and through hole tube gear. I did find a little spool of 62/36/02 in .025,
would have preferred 63/37 as the board neither had noble metals
nor silver wires.


It's all good.



Cheers,
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