A Ampermérő, Voltmérő,Tápegység modul,Multiméter legjobb ajánlatai - Banggood Magyar online vásárlás

samtree

Tartalom: Minden üzenet; Vélemények; Hozzászólások; Válaszok; Kérdések

Minden üzenet

samtree 15/04/2020

Just perfect. I checked the voltage readings against those of my very trusted multimeter ANENG 8002 (bought also from Banggood) and the difference in the range 1.2 – 33 Volts was less than 20 mV. Then, I checked both the voltage and the current readings against those of my RIDEN RD6006 power supply, and the measurements were almost identical (see photos). So, I have already placed another two of these in my shopping cart. Whenever you find something like this instrument, you buy some extra to keep them in stock. Most combined volt/ampere meters go up to 30 – 33 Volts, while this one goes up to 100 Volts. And it is both accurate (shows the correct value of the voltage / current measured) and precise (value presented with 4 digits in total, and up to 3 decimals depending on the measured value). Thank you, Banggood.

Geekcreit® DC 100V 10A 0,28 hüvelykes Mini Digitális voltmérő Ammeter 4 Bit 5 Drótos Feszültségárammérő LED Dupla kijelzővel

US$7.99 US$11.99

8

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samtree 03/06/2020

It is a pretty nice gadget. Its four outputs (+12, +5, +3.3, -12 Volts) are all equiped with a fast 5A fuse, and it has a Power On red led and an ON/OFF switch, that turns the whole power supply on and off (it does so by connecting / disconnecting the Power On pin of the ATX PSU - normally a green cable- to ground). The PCB traces for the +12, +5, +3.3 Volts are wide enough to carry a 5A current. The trace for the -12 Volts is much smaller, which is OK as the -12 Volts output of the ATX PSUs usually can supply up to 0,5 A max. Even with much more powerful PSUs (like the one in the photo) that can supply up to 18A (or even more) for +12, +5 and +3.3 Volts, this nice gadget can give you neat, easy access to all voltages for any auxiliary supply you may need, while feeding your main loads through the other cables coming out of the PSU. Its only drawback are the connectors that cannot accommodate banana plugs, but these can be easily replaced with any banana socket equipped with two nuts. And let’ s be reasonable, for that price we cannot demand to have eight banana sockets of high quality, when only one of these sockets may cost more than the gadget itself. So 5 stars undoubtedly. Well done, Banggood.

Geekcreit® XH-M229 Asztali Számítógép Tápegység Modul ATX Átalakító Tábla Táp Kimenet Modul

US$6.99 US$13.99

5

Hozzászólások (0)

ANENG AN8002 digitális True RMS 6000 számolómű Multiméter AC/DC Áramerősség-feszültség-frekvencia-ellenállás- hőmérsékleti teszter ℃ / ℉

US$24.24 US$25.99

Q: Nice product but is the price right ?

Kérdezte samtree tovább 2018-07-15 02:53:27

George_BG Oh, yes! Every penny!

2023-06-24 05:27:41 Hasznos

Beküldés

Válaszok (3)

samtree 02/05/2020

VISUAL INSPECTION : Quality of construction very good, no loose components, no bad solder joints. PERFORMANCE : It worked just out of the box. I left it without load for about 15 minutes and then I coupled three 12 Volts 50 Watts bulbs connected in series. Output 4.2 Amps (150 W). No smoke, no smell, no noise at all, output voltage extremely stable at 35.77 Volts (with no load) and 35.7 Volts (with 4.2 Amps load). So far so very good. Then I tested it more thoroughly with the same setup at 4.2 Amps (no smaller loads). My findings A. Voltage : Extremely stable. B. Cooling : Poor. As other reviewers have said, it can get really hot. After 10 minute at 4.2 amps, the temperature of the output heatsink reached 52 degrees Celsius and was going up (photo 1). Transformer and input heatsink were also too hot, output capacitors also felt hot. I installed above it a 8x8 cm, 24 Volts, 60 mA fan, and now it is really cold – after hours still 31 degrees Celsius. Perfect C. Output ripple (with 20 MHz filter set to ON): Not acceptable. At 4.2 Amps, it is about 850 mVp-p (photo 2), consisting mainly of a sinewave (630 mVp-p, photo 3) and on top of it are added the spikes ( 210 to 250 mVp-p - photo 4) due to the switching frequency. Reason: inadequate output capacitance. By simply adding a 4700 uF capacitor on the output (you can connect it directly to the spare positions on the output connector), the ripple goes down to about 350 mVp-p (photo 5). The quasi-sine wave is now much smaller (ca 50 mVp-p – photo 6), while the spikes remain the same. If you want, you can add on the output an additional LC filter like I did (13,5 mH inductor from the junkbox + 1000 uF capacitor), and go down to less than 160 mVp-p overall ripple (photo 7) because spikes are now 130 mVp-p or less (photo 8). Not bad. Conclusion : Add a fan and a 4700 uF output capacitor, and you have a decent general purpose 36 Volts Power Supply, with enough output current and for a very low price.

Geekcreit® 36V 180W AC-DC kapcsoló tápegység nagy teljesítményű ipari tápegység modul

US$16.09 US$15.99

26

Hozzászólások (0)

samtree 25/10/2019

It is a nice instrument. Shows both positive and negative current flow (which not many ammeters do), it is accurate (more than what the average amateur/hobbyist needs), the assembly instructions are good, and its price is more than nice. Its only drawback is that it needs a 5 Volt power supply, which is not easy to get from batteries. So, I decided to put it in a box, together with a regulated power supply (9 Volts battery + 7805 voltage regulator) and a switch. There are three ways to feed the current under measurement 1. Through two bare cables (in – out) 2. Through two receptacles for banana plugs (in – out) 3. Through two receptacles (in – out) for standard 2.1 mm DC power plugs (barrel type), so that you can check any power supply equipped with such a plug without having to cut the cables. I checked the ammeter against my favorite multimeter (the ANENG 8002) and throughout the whole range 0-2A the difference is negligible. Just for your information, it took me about 2,5 hours to assemble the unit (including checking all the components and the LEDs) and about 5 hours to make the box. Overall impression: Excellent value for money, very useful instrument.

EQKIT® ICL7107 Digitális Ampermér Készlet Összeszerelés Nélküli Elektronikai Tanulókészlet DC5V 35mA

US$5.99 US$11.99

3

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samtree κλεμμένο-ξεκλεμμένο,δεν

George1959 16/03/2021

Κάθε μπαταρία έχει τη δική του προστασία. Το μόνο "αρνητικό" σημείο που με κάνει να δίνω μόνο 4 * είναι ότι είναι λιγο περισσότερο από 2000mAh αντί για 4000, αυτό είναι φυσιολογικό... γιατί υπάρχουν σε αυτή την τιμή ελάχιστα η σχεδόν κανένα κελί που θα μπορούσε να χειριστεί 4000mAh....... επίσης δύο από τις δέκα δεν τα πάνε πολύ καλά..θα δούμε στην δεύτερη φόρτιση.

10PCS MECO 3.7v 4000mAh védett újratölthető 18650 Li-ion akkumulátor

US$100.00 US$139.00

20

Hozzászólások (4)

samtree 28/08/2021

I bought this to experiment with old HDD and CD motors. The product worked just out of the box, without any problem. It is true that in the low RPMs area adjustment is not so good, but still you can lower the RMPs considerably. I let the motor run freely at 12 Volts and full speed for about half an hour, and the PCB was just a little bit warm to the touch (not much). The current was about 450 mA, but at motor startup it went up as high as 1.1 to 1.15 Amps. The interesting (and very good) thing is that the overcurrent protection works like a charm. I stalled the motor (by stopping the rotating disk with my hand) and the current went up to 1.15 Amps – and no more. Very nice. Which means that if you make, for example, a grinder, and at some point in time you accidentally stall the motor or force it to run at low RPMs for some time, you do not run the risk of frying the module. I have to mention that before putting the module into operation, and having read the comments of EdLuke for this module on how to avoid module failures during startup (you can find them here in the “Reviews Section”), I put a low ESR 3300uf, 25 Volts capacitor across the power input (you can see it in the photo). As this comment is old enough (2016) maybe the problem has been corrected now, but to be sure I still have to check with an oscilloscope. Nevertheless, placing a capacitor is an easy job, so fine with me – and if in fact has to stay there, you can always solder it on the back side of the PCB. And finally, a BIG THUMBS UP for shipping. This is the first time I experienced shipment with Banggod Express, and all I can say is “Congratulations”. So, five stars for everything, and Thank You Banggood.

5V-12V DC kefe nélküli motorvezérlő kártya vezérlő merevlemez-meghajtó motorjához 3/4 vezetékes

US$8.99 US$15.99

3

Hozzászólások (1)

samtree 13/06/2020

AMAZING. That’s all. I bought it because I needed a clamp ammeter that can measure both AC and DC, and it proved to be much more. Well built, of solid construction, the ammeter readings are very close to the real ones obtained with a normal cabled ammeter, and it is also an accurate voltmeter, capacitor meter and resistance meter. Apart from that, you can have a square wave swinging between +- 1,5 Volts (+- half the battery supply voltage of the instrument). But what really surprised me, is the frequency counter function. Not only it does very accurately measure the frequency and the duty cycle (tested it with 5 Volts square wave, up to 80 kHz, against an oscilloscope), but it can also measure a wave that does not cross the 0 Volts axis. I measured a 2 kHz (actually 2.012 kHz) square wave, with its HIGH at 5.3 Volts and its LOW at 1.96 Volts, and the little devil measured it !!!! Precisely!!. (see photos 1 – the oscilloscope- and 2 – this ammeter). I do not know of any other general purpose instrument with frequency measurement as a “bonus feature” that can do that (my precious ANENG 8002, among others, cannot). So, next time I want to make a quick check on the triggering of a MOSFET gate, I will not have to take out my oscilloscope. I have only a note on the manual (which BTW is good) : On the last page it says “Current is not input” --> “replace fuse”. Well, there is not any fuse in it – I opened it and checked. Which was expected, as there is not any actual “high” current flowing through the instrument, what is actually flowing and measured are small induced currents – hence no fuse needed.. Overall impression : Excellent instrument, unbeatable value for money. How do I feel ? Very happy. My rating : 5++++. Thank you, Banggood.

ANENG ST209 digitális multiméter bilincsmérő 6000 megszámolja a valódi effektív effektív erősítőt DC / AC áramcsipesz teszter mérők Voltmérő 400V automatikus tartomány

US$38.10 US$39.99

2

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samtree 26/10/2021

This is the second one I buy. In general the step drill bits are a very useful tool. This one, which is not easy to find, goes up to 13 mm (as opposed to its small brother that goes up to 12 mm in 1 mm steps, and the larger other ones that have a 2 mm step only for even numbers, thus skipping the 13 mm diameter). As many components like swithes, lamp holders etc require a 13 mm hole, its advantage over the other ones becomes apparent. Thank you Banggood, 5 stars, I only wish the price was somewhat lower :-)))

3-13 mm-es HSS-titánt bevonattal ellátott lépcsőfúró,1/4 hüvelykes hatszögű fúrószár

US$15.00 US$15.99

0

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samtree Thnak you, Doctorzorro, It is always a good thing to have someone correct your mistakes, and I really appreciate your help.

samtree 02/06/2017

First of all, it is a great product. No more trying to press the cable terminal with a set of pliers (actually for the blue ones you need a vice) :-))). And secondly, because there have been some comments that the color coding is wrong. Me too, like many others, I thought that yellow terminals are bigger than the blue ones (and I do have some yellow terminals that indeed are bigger). BUT.... I made a small research in the Internet (thinking that a manufacturer cannot make such a childish mistake) and ... well, fasteners smaller than the red ones are also marked yellow (see attached screenshot from the "Ferrules Direct" site). So, an excellent product AND with correct color coding. Thank you Banggood. A++++ from me !

Paron® JX-1601-01 ötvözött acél díszítő szerszám a fogókhoz

US$10.38 US$10.99

0

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samtree 31/12/2020

Well, my wife says that the quality of the fabric is fine, and that the size table is accurate and helps a lot to choose the right size. So, five stars for the first non electronic/tool product i ever bought from Banggood :-))

Női virágos növényi nyomtatás hosszú ujjú tengerparti ünnepi laza ruha

US$28.86 US$29.99

1

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samtree 23/06/2020

TIP OF ADVICE Download from INSTRUSTAR and install the software before buying – to make sure that it will work. The download package also contains a lot of documentation on the use of the Oscilloscope. OVERALL IMPRESSION: It does a great job, considering the price, and fully covers my needs. OSCILLOSCOPE PERFORMANCE : It saturates at +- 6 Volts, so by using the 10X probe you can measure up to +- 60 Volts. The curve is somewhat “hairy” but that’s OK.If you want to go higher than that, buy from Banggood a “Hantek HT-201 300V 20:1 Passive Attenuator for Oscilloscopes” (I bought two of them). EASE OF USE: Documentation could be better, but still helps. You have to experiment a little bit, but it is fairly easy. I use the “simplified S/W version. Having the entire laptop screen area to work with (mine is 17”) is simply magical. There are still features I have not discovered yet – like the “Capture” function. SPECTRUM ANALYZER: I had never used one before. I experimented a little bit, it seems to work. RECORDER: This is what I like the most. Many times, a lot of interesting things happen berore and after the trigger point, and with a normal digital oscilloscope it is hard to catch them all. Here, you can set the recording length so that you start recording before the event and stop after. Then you can analyze the whole thing by studying the parts you need, by magnifying both time and voltage. One disadvantage: The input voltage must be between minus 6 and plus 6 Volts, so you may have to set the probes to 10x (or use the 20:1 attenuator) and then multiply the readings accordingly. See attached photos of what happens at the MOSFET gate (CH1 - yellow) and the MOSFET Drain-to-Source (CH2 - blue) of an electronic fuse at short-circuit. Photo 1 is a 3 seconds recording, and Photo 2 is the magnification of the time of the short-circuit. You can even use the Cursors the take measurements (here, the fuse cut-off time). So, for me, 5+ stars and Thank You, Banggood.

MDSO ISDS205A 2CH 20MHz 48MSa / s Virtuális PC USB Oszcilloszkóp FFT Analyzer Data Logger

US$98.16 US$101.99

1

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samtree 07/06/2020

I bought these two for my stock, as it is an excellent measuring instrument. For details see my previous review on 2020-04-05. Small tip of advice: the two current cables (red and black) are not as thick as they look (it is the insulation that is thick, not the cable core). I measured them, and the resistance of each one is about 10 mOhms. For a 5A current, the thermal loss on each cable is about 0.25 Watts, but at 10A, it goes as high as 1 Watt. So, if you intend to use this instrument for measuring currents higher than 5A and for long periods of time, either cut these cables as short as possible, or replace them with a thicker cable (1.5 mm2 or more). Well done Banggood. 5/5. Thank you!

Geekcreit® DC 100V 10A 0,28 hüvelykes Mini Digitális voltmérő Ammeter 4 Bit 5 Drótos Feszültségárammérő LED Dupla kijelzővel

US$7.99 US$11.99

2

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samtree 05/02/2018

I have bought many of these, and I use them almost every day. You can set up a test circuit in seconds, be it 230 VAC or low voltage DC. Recently I tested a MOSFET with a load of 24 Amperes, formed by 6 lamps rated 12 Volts, 35 Watts connected in parallel. All the connections were made using these terminal blocks, and from three of them (one with 3 pins and two with 5 pins) the whole current of 24 Amps was passing through. After about an hour, the blocks were somewhat warm to he touch, but far from being hot, and their temperature had stabilized. Still I will not use them buried in the walls even for small currents, mainly not because I do not trust the terminal blocks, but because if you do not pay attention while inserting the cables, the terminal spring may not fully "grasp" the bare conductor end, which results in a loose, poor connection. This is a user problem, not a product problem, but still it exists. My rating : 100/100, A+++++++. Thank you Banggood

Excellway® ET25 2/3/5 Lábú Rugós Csatlakozó Blokk 5 db Elektromos Kábel Kábel Csatlakozó

US$3.99 US$8.99

6

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samtree 17/07/2020

This is a nice product that is very hard to find. Apart from that, these 600 mA fuses were missing (by mistake) from a previous order, and Banggood customer service sent them as soon as I contacted them. Which proves once more that Banggood is a very good seller that keeps his promises. Well done Banggood, 5 stars for the product and the service. Thank you!

10 / 20db ANENG 10 * 3,5 mm-es kerámia biztosíték 600mA 10A 250V multiméterhez

US$8.99 US$10.99

0

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samtree 10/06/2020

These fuses are really hard to find, so I was very glad to see them in Banggood. I have three ANENG 8002 multimeters , so now I have a lot of spare fuses for them and I am happy. Thank you Banggood.

10 / 20db ANENG 10 * 3,5 mm-es kerámia biztosíték 600mA 10A 250V multiméterhez

US$8.99 US$10.99

0

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samtree 07/06/2020

It is a very nice acrylic box for the W1209 thermostat. Good quality, very nice finishing, easy to build. Apart from the screws, it has also four nylon spacers (not shown in the pictures) that are placed between the PCB and the bottom of the box so that the back of the PCB is not in contact with the bottom plate. (these spacers were not provided in early deliveries, but now they are included). It is true that the buttons are not easy to reach (you need a pen or a small stick for that) but on the other hand, this prevents the buttons from being accidentally pressed – and for me this is just fine. By replacing the nuts on the back with M2 or M3 stand-offs (depends on what you have), you can easily attach the thermostat to your main unit (see photo). The result is very professional. Thank you, Banggood.

Akril héj W1209 DC 12V -50 - 110 hőmérséklet-szabályozó kapcsoló termosztát hőmérőhöz

US$8.07 US$8.99

0

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samtree 07/06/2020

I have been using them for years – mainly for DC connections, but sometimes even for 230 VAC and small currents (just testing things). I have never had any problem at all.

DANIU P3008 10db 4mm-es réz banán dugós csatlakozó hangszóró erősítő teszt szondák csatlakozó

US$13.85 US$14.99

0

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samtree 05/06/2020

As described, well made. Thank you, Banggood.

Suleve M3AN12 10db M3 gömbölyű hüvelyes anya galléros csavarral távtartó alátét alumínium ötvözet többszínű

US$9.23 US$9.99

0

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