An indispensable tool for any amateur radio

Would you like to have a device which measures inductance, capacitance, as well as resistance? In addition, measured ESR capacitors, check the serviceability of diodes, transistors and much more? And it is desirable that it is not exorbitant cost money, and quite affordable, well let to 1000 rubles. Such a device is, and it looks like this:

I ordered it on the site AliExpress, running the company's gadget FNIRSI and brand GM328, From the usual crown, but it can be powered and controlled from the power supply. The firmware in the device is completely Russified, so that problems with the definition of the terms does not arise at all.

calibration of the instrument

After switching on the device is immediately ready for measurements, but better to calibrate the device by following these steps:

Before you switch on the device, insert a short circuit in the receptacle. Then turn on the device and wait until the screen lights up as follows:

Then again, click on the button for 2 seconds, and when you see on the screen the word "Isolation" Remove the jumper. Then, when the screen displays the following: 1. --II - 3> 100 nF, insert the test connector capacitor is greater than 100 nF. Everything on this test is over and you are ready to direct measurements.

After calibration, let's get to the check elements.

Check items

Our first guinea resistor is 50 ohms

Next, let's test resistor 10k

Accuracy of course there is, but no one says that I precision resistors (precision).

Now let's measure the parameters of capacitors

Let's start with K53 1A:

Capacitor 2.2 mkF:

Moreover, except for the capacitance of the capacitor unit outputs a parameter such as the ESR - equivalent a serial connection and a parameter called U loss - loss of power, which is measured in percentage.

We verify the capacitor 680 mkF:

Now let's check a diode:

As you can see the device immediately identified, where the measured diode cathode and the anode, also have a voltage drop and the capacity of the PN- junction. The presence of relatively high capacity points to the fact that such a diode is used in low-frequency and medium frequency circuits.

Now let's check the LED:

Here we are seeing the glow rated voltage and capacitance of PN - transition.

And since the device copes with inductance measurement:

Cope perfectly well.

Now let's test using bipolar transistors and the device will begin with KT814B:

The device determined the following parameters: conductivity of transistor terminals, and the gain of the voltage drop across the emitter-base transition. It's just great.

Let's check the transistor KT854A:

Now let's test transistor IRFZ44N:

Just like this unit can measure and be a frequency generator:

Important. It should be understood that the device can supply a current for measuring a maximum of 6 mA, which certainly limits the measurement region. So power thyristors or triacs will be measured incorrectly. So we should not be measured by this device semiconductors with integrated resistors.

I ordered the device without the box, as I will do it on your own, you can also purchase the device itself and the body to him this link.

conclusion

The device I was happy as an elephant. For my modest needs this device fits just perfectly. I liked the article and found useful, then vote it Like. Thank you for your attention!