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Transistor, Fet and Ring Tester

By on April 22, 2011

Congratulation to one of my ERG members Mr Daud from Pakistan who have successfully built a two in 1 tester -the Transistor and Ring tester. The idea was good and one do not need to have two separate testers.  The labeling (sticker) was also impressive! He also had built the FET tester.  Please take a look at the bottom pictures:

fet tester

 fet tester

fet tester

fet tester

fet tester

testers in lab



  1. Koeun

    April 22, 2011 at 6:14 pm

    Are there schematics for those testers if I wanted to built one myself?

  2. sean castro

    April 22, 2011 at 10:13 pm

    very nice!

  3. admin

    April 23, 2011 at 1:27 am

    HI Koeun,

    You need to sign up at in order to get the FET tester by Beh. Below is the link to Ring tester:

    As for the transistor tester you can get one from the internet:


  4. Daud

    April 23, 2011 at 1:50 am

    Thank you all for appreciating my work.

  5. Owais

    April 23, 2011 at 1:52 am

    This is excellent work Daud. You have come a long way in this and I hope you will create more to benefit other users. By any chance do you sell these devices?

  6. Waleed Rishmawi

    April 23, 2011 at 3:39 am

    excellent work Daud..two in one..that is nice..I also like the facing on the meter with the nice labels..very impressive..keep up the good work

  7. Amir Mukhtar

    April 23, 2011 at 4:07 am

    Nice Implemented project
    thanks for sharing as good and valuable asset.
    So, Congratulations goes to Sir Jestine and Mr. Daud, who is my native countrymen also.

    Best of Luck

    Amir Mukhtar

  8. beh

    April 23, 2011 at 1:36 pm

    congratulations daud
    very beautiful job is done. specially printed panel
    good luck

  9. tooni

    April 24, 2011 at 1:21 am

    nice to see your project. It will really benefit to all the members of ERG. Special thanks to Mr. J.Yong for guidance and giving room in his pages.

  10. Nadeem

    April 24, 2011 at 11:23 am

    this is wonderful and highly appreciate-able job which Mr Daud have done

  11. Romeo Buagayan

    April 25, 2011 at 9:47 am

    I'm interested to have one tester as that in the photo above. can you send me complete schematic diagram and partslist? thank you and more power.

  12. admin

    April 26, 2011 at 8:23 am

    HI Romeo,

    Please see the above links.


  13. Bilal Khan

    April 26, 2011 at 1:23 pm

    this is too good.
    i am proud to a pakistan.
    and those people who made him more greater.
    mr. daud is one of them.
    i am proud of you.
    Geo pakistan.

  14. Robert

    September 15, 2013 at 9:30 pm

    Nice job, Daud!!

  15. raymundo saura

    September 17, 2013 at 9:54 am

    thanks and GOD bless


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