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19.02
Multifunctional LCD GM328 Transistor Tester Diode Capacitance ESR Voltage Frequency Meter PWM Square Wave Signal Generator
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19.02
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Questions & Answers
I can't remember. I think it was.
By Lee S. on February 5, 2018
I haven't used the one I built yet. I forwarded this to a friend who is very familiar with it. I'm sure he will have an answer
By Lee S. on July 6, 2017
Discussions
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open this forum in full pageAverage Rating:
4.6based on 27 Customer Reviews
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Write a Customer ReviewBy Charles K. Black
May 18, 2020
By Theresa
December 22, 2019
By Karen
December 22, 2019
By Geraldine
December 19, 2019
By Mark
December 18, 2019
... is very well served with this ingenious measuring device! As an old electronics engineer and hobbyist, I am very enthusiastic. You can use it to measure the following components: resistors, capacitors, diodes, transistors, coils, LEDs and probably a few things that I have not yet tried. The component values are displayed very graphically. For example, Displayed what transistor it is (NPN or PNP) and what penetration voltages it has. In the same way, the penetration voltage is displayed especially for diodes, which makes the calculation of the appropriate series resistor very precise. All in all, a really successful product.
By Heather
December 16, 2019
I love this little device. Until recently, I didn't even know there was anything like that. I came across it by accident on Amazon. Before that, I had to use the multimeter to measure every part myself, such as transistors, resistors, LEDs, etc., which was very cumbersome. I have received version 2.68! Simply insert the selected component into the small blue device, fold the lever to the left and press a button. After 2 - 3 seconds it shows me which component it is and its values. If you keep the button pressed, you can even adjust the contrast. Even the small printed metal template (which looks like a transistor) between the blue connector and the yellow button can be used to measure transistors. Instructions are not included with the whole, but you don't need them either. The lower pins consist of two connections each (2 and 3 = 2223333) The upper pins consist of 3 different connections (1, 2 & 3 = 1231111) To measure a transistor, either use the metal-like template or slide it into the top left in 1, 2.3 on and push a button! Everything else with two legs can be measured using the pins: 1 + 2, 2 + 3, 1 + 3 or 2 + 3. The following components and their values are recognized: - Led's, also the 1N40XX diode - Resistors - Transistors: NPN and PNP - Capacitors (type Elko and ceramic) and their capacitance +/- 3% - I have not tried anything else. Voltage regulators such as the LM317 are unfortunately not recognized. And for fun, I even put an IC with 8 pins (four on each side) into it. I was shown something similar to a transtistor and what values where I wasn't sure what they meant. I don't want to miss this part anymore. Absolutely belongs in every handicraft workshop to quickly measure components! Hope it lasts a long time. Will update this post from time to time.
By Robert
December 16, 2019
The part does what it should and is intuitive to use. The detection / measurement of the components is sometimes a bit sluggish, but you can live with that ;-) To compare the results, I used a much more expensive device - the agreement is amazing! Personally, I didn't like the test socket and I replaced it with 3 numbered test cables with test clips ... Even such actions are indirectly supported by the device - you can then recalibrate it with a "self-test", instructions for this can be found on YouTube. .. you only have to connect all 3 pins when switching on, then you need a capacitor> 100nF, the process is shown on the display, so you are "guided".
By Erica
December 14, 2019
By Paul
December 13, 2019
By Gwendolyn
December 11, 2019
The device fulfills the promises given. However, it would be more than advisable to include a few operating instructions. You can find your way around the controls, but is e.g. shocked if the contrast setting for the display suddenly outshines the same and believes that there is now a defect! The fact that the typing continues with minimal contrast is not obvious to everyone. Otherwise, the device is highly recommended; unless you use the "KKmoon GM328A Multifunctional LCD ......." with HOUSING.
By April
December 9, 2019
By D. Stegmeir
November 25, 2019
It worked as expected. I found several reviews of similar VNA products made in china that had quality problems with some not functioning. It had the USB C cable, the open, short, and fifty Ohm calibration kit. The battery was there and as expected there was no shielding on the board. Did not have the female to female SMA connector, but it is still a great value as an industrial quality one would be ten to a hundred times more expensive. Have only used it for a few days by its self and with open source software that runs on a PC called "nanoVNA-saver". This allows you to see the measurements on a bigger screen (the nano VNA screen is small), print plots, save the data, and other things.
By Xajuar
November 24, 2019
By J. Levesque
November 23, 2019
By G. F. Christensen
November 23, 2019
Manual? we don't need any stinking manual! After all, most of us will only read it once we admit we can't figure it out on our own, right? Download NanoVNA saver, and save your eyeballs from reading tiny screen. More accurate than I had expected. lots of valuable information packed in one small screen Shirt-pocket sized. perfect for use in the field. Touchscreen was not made for large fingers, going to need a pressure-type stylus.
By Boatlover455
November 21, 2019
By francis m durant
November 21, 2019
By Jason Sosebee
November 20, 2019
By ***
December 10, 2018
This is a nice little tester. I got it together in about an hour. They did get one resistor wrong in the kit - it was off by one order of magnitude (I supplied a proper one). There does seem to be a consistent thing about resistors w/ this kit looking at other comments. Other than that though it works a charm - basically you plug the part to test in and push the button. Nice.
By r***b
March 12, 2018
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