LCR-T4 electronics components tester ATMega328 - Test and Review

DiZMar wrote:

should display a message that the result is out of range as normal meters or other "simple" devices measuring even weight

You are very critical of this tester - you probably have not received it from Gulsona screwdriver for protection. Just mention in the instructions: If the subsequent measurements differ significantly from each other, then it is possible that the measured element is outside the measuring range of the tester.

Adamcyn wrote:

... You are very critical of this tester - you probably have not received it from Gulsona screwdriver for protection. ...

I got a screwdriver, of course. This does not change my honest assessment. It is difficult to name regularity irregularity . Out of range this out of range not any random indication . A simple weight outside the range squeals or otherwise indicates that the range has been exceeded and not after the subsequent positions of the same mass each time different. A simple voltmeter, even a tilting device, bases a hint on the final limiter or even destroys it if the range is too high. A heavy truck with a heavy banner simply throws it. Give more examples?

Returning to the measurement of inductance - the value of several dozens of Henri was associated with a lot of iron and copper. And here is such a small transformer ... Have you checked my calculations? I'm weak in commas

I ordered this tester from gadgets. It will be useful because I have to sort dozens of TO-92 transistors with a spout. I only have a question about the power supply. How much can you give? 9V batteries do not use because the instruments are converted to external power supply. Two ZX5.6 (5.6V 12.5W) generators and a regular rectifier.

Add 2 rectifier diodes (direction of conduction) to the receiver in series and you will receive approx. 7V and it will be enough. The power supply is over a dozen V. I use an old 6V / 1.3Ah gel battery and I think that once a year the top-up is enough.

And the 9V battery lasts for a year and I do not know why you're combining.

Because, you can I know that this is over form over the content, but I gave my inverter the converter, charging module and battery from the phone. When I'm done, I can give pictures.

pawelr98 wrote:

9V batteries do not use because the instruments are converted to external power supply.

It's a remake, combinations have any sense at all? I understand that to make them out of boredom, and only for that reason Neither aesthetic nor economic or ergonomic. One of my multimeter is 4xAA, it draws like crazy, it has a power socket. I use the power supply because it is originally. The second meter on 6F22 (9V), I exchange the battery on average, I think once every 2 years. What is the point of babasing? This tester from Elektroda, will also be powered by the original battery because I do not see the point at the moment to convert it into something else.

bestler wrote:

And the 9V battery lasts for a year and I do not know why you're combining.

In universal meters, they often used up much faster. Battery voltage drops have deteriorated the precision of measuring diodes and small resistor resistors. I happen to do long measurements. Recently, for example, for about an hour I measured the base current of the transistor which worked at 90 ° C (KD502 at almost 60W power). To the extent that the sticks can be bought almost anywhere, the 9V batteries are different. To buy such a battery, sometimes I had to go to another store. And just like that I just plug in this power supply and I have peace. The meter from the picture has a 7.5V zener in it which lowers the voltage to the required level. As I mentioned earlier, the tester will be doing a long series of measurements. I have a lot of items to check out. Depending on what I disassemble, I can even reach several transistors after a few minutes. I have a lot of electronic scrap which serves me as a source of components. I have a small bucket full of coils, transformers or chokes.

I see that not only I do not like 6F22 (9V). These batteries are fortunately less and less popular in home appliances. The price of these batteries does not translate into capacity and the voltage drops quickly to approx. 6V.

Me in the meters that are often included 10h / day the battery lasts for quite a long time, a few months I think up to half a year. In the away meter used, say, an hour once every three days, I do not remember when I changed the battery, but very long ago. I use the same MY68 meters. In the discussed tester, I have been using batteries for a year, I use it every few days and the battery shows 8.99, and for some time there has been a similar value for some time. But ... I have a clamp meter from Sonel, which I use once in a few weeks (measurements rather short, up to several minutes max) and the battery often sits up that personally annoys me - but I can not do anything about it except to bring a stock with me. I also had a gauge some cheap, I do not remember the brand and the battery also fell down every now and then, I've got rid of it. In my opinion, a lot depends on a specific meter, some use batteries faster slower. Just like with computer mice, I used to have such a powered R6 and had to exchange it once a week. Then my next mouse was better for him, the battery lasts half a year or more.

E8600 wrote:

I see that not only I do not like 6F22 (9V).

Well, I do not like it too, but I would not like to change the power system when I think that the battery can last months or years. Sure, if I had to change the batteries at least once every 4-6 months, maybe I would think about it, but sooner than the battery, which is in the price of a good battery. Although I have recently listened to my colleagues in the forum and bought these batteries in Carefur, alkaline for 5pln with the hook. Anyway, in stores I look, electronic online are and after 4, x pln, also alkaline. So when shopping you can think about adding to the order. Let it lie. The change in power is the idea how it will become really difficult to access.

" Electronic components tester "A great gadget, so I can test it and share specific comments, not to go into what power supply or battery I use to power this tester. It's a pity that you can not measure the inductance below 10?H with this tester, but let me add that the tester I received in case measuring the inductance, the difference is only 2% from the actual (I have an inductance meter) is probably a plus for this tester.

bestler wrote:

But ... I have a clamp meter from Sonel, which I use once in a few weeks (measurements rather short, up to several minutes max) and the battery often sits up that personally annoys me - but I can not do anything about it except to bring a stock with me. I also had a gauge some cheap, I do not remember the brand and the battery also fell down every now and then, I've got rid of it.

You can buy interesting rechargeable batteries from Chinese. In a typical 6F22 casing, we have a lipo accumulator, a 9V converter and a charging system. Charging via microUSB. They also make such batteries in the AA and AAA variant. I would buy it myself, but 9V costs 25-30 PLN / piece. The capacity is also so-so because 400mAH (moreover, somewhat overstated by those who started and tested the link). One of the things I want to see is how it will react on TL431 with the REF pin shorted to the cathode. In this configuration it behaves like a 2.5V zener diode.

pawelr98 wrote:

One of the things I want to see is how it will react on TL431 with the REF pin shorted to the cathode. In this configuration it behaves like a 2.5V zener diode.

Dear friend, as long as you are the lucky owner of this tester, it's simpler than to connect this TL_a.

pawelr98 wrote:

One of the things I want to see is how it will react on TL431 with the REF pin shorted to the cathode.

My tester shows two diodes connected in series (1-3), or parallel (1-2) and (2-3). Uf = 2.5 V and Uf = 820 mV

I was interested in what the tester will show in the case of three identical resistors connected in a star and connected to the three pins of the tester. Resistors 680? 5%, resistance measured with a 665-672? multimeter. The right picture shows the result after inverting the tips by 180 °

Tester ordered I hope that it will come all in a set with a screwdriver and that I can turn ithehe. I will say that I was skeptical but you have convinced me in part. It will be useful mainly for coils and transistors. After testing, you can see that sometimes it can get lost but it is not a total layman's equipment. The only thing I would add is a switch on the power cord so that you do not draw unnecessarily energy (I know that little but always the battery will last longer) as it lies in the drawer and how it will go into detailed testing mode to speed up the next measurement by disconnecting power.

E8600 wrote:

to speed up the next measurement by disconnecting the power supply.

And what about the calibration? This is a one-off operation, do you have to repeat it after replacing the battery?

Adamcyn wrote:

And what about the calibration? This is a one-off operation, do you have to repeat it after replacing the battery?

If you do not change the battery, you do not need to calibrate? I have spied this solution here.

E8600 wrote:

I have spied this solution here.

Either that's another solution or this presenter has done something. For me (the first three from left), both the upper and lower contacts are 1-2-3.

Adamcyn wrote:

And what about the calibration?

I did not calibrate the tester. What is the calibration?

Calibration is described in the first post, at the beginning of the thread!

Quote:

After unpacking the new tester, a calibration should be performed, we do this by connecting 1-2-3 leads with the minimum resistance (eg with two jumpers from a silver or unnecessary resistor terminals). We press the microsite and the calibration starts, 38% will be asked to remove the jumpers, to connect 82% to the leads 1-3 previously prepared capacitor with a capacity greater than 100nF.

vodiczka wrote:

I did not calibrate the tester. What is the calibration?

Here: https://www.elektroda.pl/rtvforum/topic3354445.html "After unpacking the new tester, it is necessary to carry out the calibration, we do it by connecting 1-2-3 outputs with the minimum resistance (eg with two jumpers from silver or unnecessary terminals of resistors) We press the microsite and the calibration starts, 38% will be asked to remove the jumpers, to connect 82% to the leads 1-3 previously prepared capacitor with a capacity greater than 100nF. "

vodiczka wrote:

What is the calibration?

On disconnected power supply, pins 123 close, turn on the power and press the button. Then follow the instructions on the screen. Anyway, the description is on YT in some tutorial. I do not know (I did not calibrate either - I checked that it was measuring correctly, so I decided it was unnecessary) if this model calibrates too. A friend of mine last ...

vodiczka wrote:

Either that's another solution or this presenter has done something. For me (the first three from left), both the upper and lower contacts are 1-2-3.

This tester has a slightly different tile shape than the gadget, so it can have different leads.

398216 Usunięty wrote:

vodiczka wrote: what is the calibration? On disconnected power supply, pins 123 close, turn on the power and press the button.

In the film from # 322 in 12:10 the author measures double-coil (in 3 D ) transistor, which the tester considered the start of calibration. You confirm?

Affirmative. Placing in the tester, a damaged element with three pins, which is a permanent short circuit (transistor, double diode), or short circuit "per mile ohms", initiates the calibration.

I agree that with a damaged component (compact) the tester treats as starting calibration, it is quite annoying, but if we put in a new softa, this problem does not occur. We decide ourselves when we want to calibrate it by entering the extended menu and selecting the calibration option.