Review of the DY294 Digital Transistor Tester-Part 2
Hope you have enjoyed part 1 test result of this DY294 Digital Transistor Tester and below is the part 2 test result:
Use as a DC voltage signal source:
This meter produce over 240 and 1000 volt and you can use this voltages as a Dc signal source for troubleshooting and etc.
Certain types of LED can’t be test using analog meter like the one use in the Blue ESR meter. However this meter can be used to test on many different types of LED. Just set the meter to few different ranges and you could see the LED will light and the intensity of the light is depends on which range that you have selected.
This meter can be used to test on voltage value of a Varistor. In the photo below, the Varistor have a rating of 471 (470 volt ) and this meter reads 472 volt which is quite accurate. A bad Varistor will not show the exact voltage value.
Testing Neon Lamp:
Don’t be surprise that this meter can be used to check on the Neon Lamp. Just connect the Neon Lamp and select 2 Amp range and you could see that the neon lamp will light up.
Testing Ultra Fast Recovery And Schottky Diode Forward voltage drop:
The result can be seen from the photos below:
Testing Ultra Fast Recovery and Schottky Diode Reverse Breakdown voltage:
The test result can be seen from the below photos:
Testing Zener Diode Forward Voltage Drop:
Test result can be seen from the photos below:
Testing Zener Diode Breakdown Voltage:
I found that the test result for certain zener diode voltage value was not really exact because zener diode just like other components have tolerance. See the photos below especially testing the 15 volt zener diode. it reads only 14.3 volt:
From these two parts of testing it seems that this meter is a winner as it can test so many types of electronic components. Don’t miss out on part 3 as there will be more information to be revealed soon.