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Latest Digital Transistor Tester DY294

By on April 27, 2010

transistor tester duoyi dy294

Here is the latest digital transistor tester by Duoyi Electronics. According to the spec, it seems that it can be used to check on many electronics components like diode, transistors, FET’s, SCR’s, Capacitor, Varistor, voltage regulator and etc. Please click on the photo for more information



  1. Russ

    April 27, 2010 at 8:18 pm

    I purchased one of these almost a year ago. They seem to improve the model as time goes on. I had another unit made by them that I purchased about five years ago with similar features but not nearly as good. It really does a lot of things. Tests most transistors, diodes, voltage regulators and much more. Has a kind of hi-voltage insulation test. I have a few transistor testers and use them mainly to double check suspected components. I think I paid around $75.00 from ebay.

  2. admin

    April 27, 2010 at 8:27 pm

    HI Russ,

    Thanks for the info. Is this tester more accurate than other transistor tester? I may need to get one.


  3. Sam C

    April 27, 2010 at 11:41 pm

    Get one next time you visit Shenzhen. My cousin in Hongkong bought one for about HK$100 (~US$13). I have seen it on eBay for $30 shipped from China.

    It handles 20 tests :
    1 Transistor hFE;
    2 VCE ( sat) voltage
    3 C,E Iceo leakage current
    4 C,B, Icbo leakage current
    5 Diode forward voltage
    6 Diode reverse leakage current
    7 Zener Diode value
    8 LED forward voltage
    9 TRIAC trigger voltage
    10 Infared transmitter transistor forward/reverse voltage
    11 Infared receiving transistor forward/reverse voltage
    12 SCR reverse breakage voltage
    13 TRIAC reverse breakage voltage
    14 SRC trigger voltage
    15 V-MOS voltage
    16 V-MOS saturation current
    17 Pressure sensitivity voltage
    18 Neon light blub light up voltage
    19 Electroylsis or ceramic capacitor breakdown voltage
    20 7805~24 or 7905~24 3 terminal voltage regulator test

    Switches on unit:
    1 On/Off switch
    2 NPN/PNP
    3 V(BR) 2000V range
    4 V(BR) 200V range
    5 VCE (sat) 2000mA
    6 VCE (sat) 300mA
    7 VCE (sat) 10mA
    8 hFE 10 range
    9 hFE 1 range
    10 hFE 0.01 range
    11 I (CEO) 2000uA
    12 Test for Transister / Regulator
    13 FET- GS short switch

  4. admin

    April 28, 2010 at 8:30 am

    HI Sam,

    Thanks for the full details explanation of this meter! I will definitely get one soon.


  5. John Preher

    April 28, 2010 at 8:45 pm

    Thanks for the info Sam. I will grab one of these to try at that price. Might be pretty handy if it can do as much as stated.

  6. beh

    April 29, 2010 at 10:30 am


    i found the distributer of this co. in my town i orderd one this is really amazing equipment.

  7. admin

    April 29, 2010 at 11:09 am

    HI Beh,
    Thanks for the info. Yes surely i will buy one and test it out. Still searching to buy online.


  8. Steve Griffith

    May 7, 2012 at 11:30 pm

    I have purchased these about 2 years ago and highly recommend it! Only problem is that I do not have a manual for it

    • Jestine Yong

      May 8, 2012 at 8:33 am

      HI Steve,

      Try download from this link:



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