Review-Test laboratory almost KPS-3010DF power supply company Wanptek with AliExpress

I still ripe for acquisition of a regulated power supply to the factory version, because one of my homemade unit became commonplace not to be missed, and another to construct a makeshift installation and had no desire time. Therefore, I decided to order a ready option. In this article I will tell you about KPS-3010DF power supply, which I bought on the Aliexpress website and explain why I chose it.

Acquisition and Unpacking

As any frugal person I want to get the most good product for the lowest possible money, so having read a large number of the reviews I opted for almost a laboratory power supply Chinese firm Wanptek stamps KPS3010DF.

There is a cheaper version of this unit with KPS3010D designation. The only difference between them is that in the embodiment with the letter «F» indicational display shows 4 digits, and in another three.

This unit was ordered 12.08.2018, 12.19.2018 and already I took him in his post office. It cost me 4192 rubles and kopecks.

Here's a parcel I was given, were pleased with the value declared by the sender:

Anyway. Inside the package of hard cardboard hiding my almost laboratory unit.

In addition to the block in the package also includes: the power cord, test leads to a multimeter and two pairs of test clips.

So, with the appearance, perhaps, and move on to the immediate inspection and small tests.

First-time setup and verification

So, before you turn on the power supply, I once again proved that the switch 110/230 volts worth in the right position to me, well, after safely turn.

First we check the voltage without load. As a screening device I will have a multimeter mastech MY68.

Once I connected and switched on the power supply, I noticed that when regulators fine and coarse adjustment, bred to zero, from the power supply still received voltage equal to 4 mA.

Check the voltage issued

Now let's test voltage is connected to a 10 ohm impedance.

I note that the voltage regulation has a small inertia, that is, when the voltage is stopped, the controller still continues to grow. Of course, it is not critical, but stranger still have.

Difference readings on the instrument and on the multimeter is quite possible to explain the error of the instrument. As the power supply itself can "fib", and so "the meter".

So now we check the ammeter Power Supply

The measurement results are in front of your eyes, but the difference is definitely there and the maximum current and voltage they Ampere reach 0.09 and 0.3 volts, respectively, which, of course, can not talk about this device as a laboratory unit power.

So now let's check out the work of the current restrictions. To do this, as I applied load 12 car bulb and checked how much it consumes power at its nominal voltage:

Then I put the current limit of 1 Ampere and voltage regulation began.

Current limit is working properly.

Checking the stability under load

So, to test the stability of the power supply work I connected as a load automobile halogen bulbs.

She worked for about 15 minutes and during this time, no voltage or current is not changed. Also, during the entire time no signs of cooling fan activity. I decided to get him to join and this in parallel was planted the second halogen automotive lamps.

Wherein at least the heating wire current starts to decrease somewhat (which is of course), and the fan turned on for 4 minutes in this mode.

Check for pulsing I, unfortunately, I can not, because they were ashamed to admit, I do not have oscilloscope. So it is necessary according to the manufacturer (and information on the Internet), that it does not exceed the rate of 1%.

Checking the quality of assembly

Now we have to reveal our power supply and see how well this unit is assembled.

As you can see the build quality is quite good (for purely visual estimates of course).

conclusion

Regulated power supply KPS-3010DF, despite its flaws, I really liked, and I was pleased with the purchase, although to be honest I have not felt a special benefit from the expansion of the display, so the option KPS3010D It is worthy of attention. If you are interested in them, here a reference to the power supply.

Yes, it is not a laboratory power supply, but for home use it is quite fit.

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