Review of the DY Digital Transistor Tester – Download as Word Doc .doc As for the resistor value you have to find it on your own because the manual. Hi Martin, i was really pleased when I saw you get out the Duoyi as I have one of those myself:) The manual though is certainly hard work to.

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I have not tested these components yet. Standard for the price, but quite reasonable. HI Steven, Good question.

The external voltage is 7 volt when there is no load but with load it will go down thus you can use it on your meter. That means if you want to test a 16 volt cap, make sure the charging voltage would not exceed 16 volt. The volt produce no result when test on non polar cap.


I have a tester JL and I are very pleased with him. I think I’ll probably not watch the tear-down in case it puts me off using mine again. If possible get a 6 vdc 2 amp power adapter to power up this meter. Hi Parthiban, Thanks and wishing you Happy N Learn how your comment data is processed.

Review of the DY294 Digital Transistor Tester-Part 1

How this equipment can used already mentioned in this blog. Hi Willie, Here is the part 2 and 3: Charles H Rowe September 28, at 8: Another thing is that if the batteries voltage is lower than 5. Posted December 29, 4. HI Daniel, You can buy from this link: Samsung Phone Charger Repair November 2, Play, discover, learn and enjoy!

January 31, Jestine Yong September 24, at 9: Jestine, Did you ever do part 2? I like that it can be used as an maunal tester and for testing varistors. December 29, 4.

As for the resistor value you have to find it on your own because the manual does not comes with it. Your email address will not maunal published. If this non polar cap insulation have problem, the value could be less than volt.


December 18, SMF – Just Installed! But my side here I got Chinese and English manuals. March 20, March 21, John Preher June 2, at 8: You can check the latest price there.

Duoyi DY – Transistor Tester

In the photo below, i found that the resistor of kOhm is suitable to test on a non polar cap that have volt working voltage. I opened mine and looked. Looking really useful, I think I will definately order one of these. For other equipment i suggest that you get this ebook at http: In the long run, you could save the cost of buying batteries.