Measurement database: other devices

The author praised the tested board for fully breaking the circuit and protecting against reverse polarity.

The author considers the fourth version a poor design: it brings back diode voltage drop and omits the fuse.

The high voltage drop limits this board to currents of about 5–7 A.

The series protection diode causes a large drop and prevents charging low-voltage cells properly.

The board showed less voltage drop than the Atorch modules, even at 20 A.

The SMD-fuse version had a slightly lower voltage drop than the base version.

The multifunction tester has limitations: parasitic voltage drop delays charge termination, especially at low voltages.

The trigger works and is useful for testing power sources, with claimed protocol support and voltage up to 28 V.

The fan starts at 2.5 V and works well, but the author suspects it is counterfeit.

The author considers these counterfeit fans with sleeve bearings instead of the advertised ball bearings and advises against paying this price.

The cables have genuine wire gauge and soft silicone insulation, but the author dislikes the plug springs.

It delivers a noticeably sharper image and excels at spotting heat in small components, but the software and ergonomics have drawbacks.

Its standalone design is convenient, but its image is inferior to the T2S Plus, especially when viewing small components.

The holder was liked for its springs, although its leads are thin.

The board worked after its shunt was modified, but its original overcurrent threshold was far too high.

Build quality is good, but actual power is below the claim; the author recommends buying only if that power is acceptable.

The author likes the neat, compact kit and says it is more economical to buy it assembled.

The author considers the transistors likely genuine but warns of thermal runaway when tested at the rated current.

The author considers the HY3708 genuine Chinese transistors and recommends them.

The clips look decent, but their metal is thinner than that of similar older clips; the author doubts the claimed 100 A rating.

The clips seem well made, but the author expects the stiff spring and soft insulation to make them awkward to use.

The leads match their stated length, cross-section and resistance; the author recommends them and particularly likes the banana plugs.

The genuine Sunon runs steadily and draws 5.6 W at 15 V.

The powerful genuine Sunon drew over 7 W at 15 V and produced a strong airflow.

The clone is quiet and well balanced, but draws only 1.66 W at 15 V instead of the stated 4.4 W.

The display works, but the author considers its readings of little use and says it is only needed in rare cases.

The fans blow well and are a good buy, though one needed balancing and they do not reach the stated current.

The new offline-purchased transistors meet their stated specifications and serve as the comparison baseline.

The used Onsemi parts look convincing, but some Fairchild samples raise doubts because of resistance differences.

The author considers the 10 A fuses likely genuine; he did not test their operating characteristics.

The 1 A Siba fuse looks genuine, but its resistance is three times lower than the datasheet value.

The compact board works oddly: protection trips at unusual thresholds, and the balancer never activated.

The cable is soft and heat-resistant and supports up to 100 W, but its plug may make poor contact.

Four 405 W panels were installed; the system recorded a peak of 943 W from them at the inverter input.

The relay is effectively suitable for up to 40 A; measurements above that are inaccurate, and protection fails without WiFi.

The relay impressed with accurate readings and low-load measurement; it handles the rated 65 A, but continuous current should be limited to 40 A.

The author liked the board: it is convenient and practical despite minor encoder issues.

The relay is well built and meets its specifications, but its default settings cause frequent false trips.

The red-indicator version is well built, but its default thresholds and response mode can cause false trips.

The author finds the white indicator easier to read; overall, the relay is well built but needs adjustment.

A useful kit with minor quality flaws, but it contains noticeably fewer fasteners than advertised.

A capable, neatly built relay, but software shortcomings and concerns about sensor safety and reliability remain.

The caps are neat, fit securely, and come in many colors; the author recommends them if the price is acceptable.

The controller’s modes and compactness impressed the author, but its temperature accuracy is low.

The compact station turned out well: it solders easily, holds temperature, and runs cool.

The author liked its resolution and sensitivity; other positives include a large display and a protected body.

An original clock with convincing indicator emulation, but it lacks useful features for the price.

The feature-rich module largely meets its specifications, but the author finds it expensive and notes shortcomings in its software and hardware.

It works and balances faster than a passive unit, but draws more than specified and needs modification for ordinary Li-ion cells.

The balancer reduced the cell spread to 0.6–1 mV, though it is slow with a large imbalance and draws noticeable power.

The compact enclosure can fit a 300–400 W PSU, but active cooling is necessary.

The compact relay works normally and is neatly assembled; the author liked its features and affordable price.

The module and software work reliably, but the app lacks important features and its capacity calculation is questionable.

The buttons look good and have even illumination, though the NC contacts and dim orange light have drawbacks.

Brighter than the Gauss, but became unreliable after 10 months; the purchase price was refunded under warranty.

Falls short of its rated power and shines noticeably dimmer than the Osram and halogen bulb.

The bulb was rejected during screening because phone-camera flicker was noticeable.

The replacement is slightly dimmer, but subjectively similar in color, color rendering, and flicker.

The wire matches the stated resistance, stays flexible in the cold, and withstands heat.

The wire matches the stated resistance, stays flexible in the cold, and withstands heat.

The UPS impressed with its charging and build, but switches to battery slower than specified and makes irritating noises.

The module worked immediately and has isolation and protection, but its isolation is not a safety barrier.

The relays are convenient and pleased the author, but small-print units tripped at about 45 °C instead of the stated 50 °C.

The controller impressed the author with its many settings, strong charging and balancing, and good welding results.

The tested transistor measured about 0.493 mΩ near its leads, matching the claimed on-resistance.

The connector proved convenient, performed well, and has enough contacts for auxiliary connections.

The logger impressed with its design, measurement accuracy and features, but its remote interfaces need improvement.

The author liked the device: it passed the tests and combines energy monitoring, Wi‑Fi, and extensive protection features.

It operates stably and accurately; the author considers 63 A too high for continuous load and advises staying below 50 A.

The author is pleased with the relay: he has used it for years, and five-year-old units still work without complaints.

The connector is convenient for probe connections, but the author rates its quality below par.

The board sustains 10 A and shuts off at about 13.5 A; the author recommends it despite the lack of balancing.

The board worked as expected and measured parameters matched its description; the protection trip current could not be tested.

The flux works well but is sticky, hard to clean, and the author advises against using it on electronic components.

The cable automatically requests 20 V from a compatible charger; the author finds it interesting and useful in some situations.

The sensor works and uses little power, but is sensitive to external IR light and may trigger unreliably.

The author liked the rangefinder: it has enough functions for household use, but a longer-range model is better for greater distances.

A small transformer rated at 8 W; it gets noticeably warm with no load.

A transformer with two 12 V, 0.5 A windings; it gets noticeably warm with no load.

Two 12 V half-windings rated up to 1 A; it gets noticeably warm with no load.

A 24 V, 1.2 A transformer; its no-load current is nearly 1.5 times higher than the previous model's.

A transformer with a 2×13 V, 2 A winding rated at 52 W; it gets noticeably warm with no load.

A transformer with several output windings; roughly 60 W is the author's estimate based on its weight and model.

A 22 V, 2.7 A, 59.4 W transformer; it weighs almost the same as the previous one.

Two windings with no stated ratings; the author estimates roughly 70–75 W from its weight.

A transformer with 11 V, 0.5 A and 2×14 V, 4 A windings; stated calculated power is 117 W.

A toroidal transformer with many useful windings; the author likes it despite its high price.

A 2×12 V, 3.5 A transformer rated at 84 W; its no-load temperature is similar to its counterpart.

A 2×15 V, 3 A transformer rated at 90 W; its no-load temperature is similar to its counterpart.

The protection works and is easy to assemble, but the included relays are poor quality and the terminal blocks have mismatched spacing.

The transformer heats under load, but the modification eliminates interference.

Works conveniently and reliably, but only the high-speed mode works and output power is limited.

The author is pleased with the module: it reliably controls an electronic load over the local network and provides galvanic isolation.

The transformer was tested: idle current was about 58–62 mA, and after an hour it reached about 40–45 °C.

Very small connectors without a banana-plug socket or a hole to clamp a wire.

Inexpensive connectors with an awkward wire clamp and an unreliable threaded insert.

It has openings for a banana plug and wire, but they cannot be connected simultaneously.

The author likes these banana-plug connectors and their clamp, which does not push the wire out.

A larger version of the liked connectors, with banana-plug and wire openings; the wire is soldered.

Quality connectors with a convenient double clamp nut, but damaged insulation reduces safety.

A distinctive design with a captive clamping nut, but it lacks wire holes and soldering may be difficult.

Its parameters broadly match the datasheet, but it is not intended for linear operation and one sample had a bad connection.

The resistance test passed, and its characteristics resemble the original, but the author is unsure whether it is genuine.

Resistance was somewhat above the typical value but within the stated maximum; authenticity remains uncertain.

The pad showed a temperature difference of about 25 °C and may suit low-power sources with a larger contact area.

HY-510 is only slightly better than KPT-8, but suits hobbyist uses where a few degrees do not matter.

The adapter is useful for testing USB sources and devices; the author says it is worth the money but suggests a modification.

An interesting kit with a good display and useful features, but no assembly instructions or documentation.

The paste transfers heat noticeably better than KPT-8 and can improve heat dissipation.

Tian Mu has decent thermal conductivity and dries relatively quickly, but its adhesion is average.

K-5202 performed about as well thermally as Tian Mu and held better than K-5204K.

K-5204K performed worse than K-5202 despite its higher claimed conductivity; the author advises against it.

Both shunts matched the stated resistance; readings fluctuated slightly when heated to 90°C.

Readings were close to nominal and usually fluctuated between 2.19 and 2.20 mΩ.

Readings were stable: two shunts measured exactly 6.8 mΩ and one measured 6.79 mΩ.

Measurements ranged from 9.9 to 10.1 mΩ, but the meter lacked the resolution to assess this value precisely.

The shunt was relabeled: its resistance was 54 mΩ instead of the stated 41.6 mΩ.

Measured resistance matched the stated value; after heating to 94°C it fell to 46.9 mΩ.

The controller worked and restored QC 2.0/3.0 functionality in the charger.

The replacement restored autofocus; the camera works normally, as it did before the fault.

The used transistors varied widely in resistance and internal construction; the author considers the purchase a failure.

The resistors can be used in a power stage, but their poor accuracy and high TCR make them unsuitable for measurement.

The lights nearly reach their rated power and do not overheat, but the LED arrays have a greenish tint.

A sturdy, convenient holder works well for battery testing, though its plastic part and use with small-diameter cells have drawbacks.

The holders suit small DIY projects, but the wires should be replaced and they should not be used at high currents.

The author likes the holders’ quality and price, but warns they do not fit protected cells and have current limitations.

The adhesive holds a heatsink well and performed about as well thermally as KPT-19 and KPT-8 pastes.

A nice level indicator, but it is more like music-driven animation than a spectrum analyzer.

A useful eight-channel module with solid construction, but its PoE converter overheats under heavy load.

The holders secure cells well, but for high currents, solder closer to the contacts.

The paste holds components well but is too runny; its actual melting temperature is about 220°C.

The display works normally and is affordable, but its viewing angles are poor.

The modules lit at 300 mA, but two of six were faulty; the author is unsure about buying from this seller again.

The enclosure is neat and easy to assemble, but its fan is noisy and runs continuously, and its switch is unsuitable.

The kit is easy to assemble and sounds good, but the component quality drew criticism.

The amplifier sounds decent, but runs very hot and its output offset drifts.

The author could not prove it was counterfeit, but notes that this does not confirm it is genuine.

The author identifies these as counterfeit; this capacitance and color do not appear in the series catalog.

Despite good measurements, the series marking does not match the catalog, and the author concludes they are counterfeit.

The author considers them counterfeit because of severe imbalance and unusual behavior.

The author considers them about 98% counterfeit; opening one revealed only paper and foil inside.

The kit is easy to assemble and sounds decent, but has issues with square-wave response and frequency-response uniformity.

The controller works normally without noticeable audio distortion, but its adjustment is too gradual.

The sleeves crimp normally, but the author suspects they are aluminum and considers them unsuitable for copper wire.

The terminals crimp and hold wires well, and the size selection suits household use, though the packaging is inconvenient.

Works reliably, but the author advises keeping each port below 10 W; protection and four-pair PoE are lacking.

Matched the first switch's throughput; the author found its PoE implementation more interesting, but did not separately test its load performance.

The set offers useful sizes, a handy box and good crimping, but contains roughly 9–10% fewer terminals than stated.

The nickel strip matched its stated dimensions and resistance, and battery welding was successful.

The wide nickel strip is convenient for welding multiple cells, though it costs nearly one and a half times more.

The strip welded firmly, but another strip in the order had the wrong width, and resistance measurements were imprecise.

The strip welded successfully, but its actual width was 7 mm instead of the stated 6 mm.

The mat held small screws, but its grid is hard to see and it is only large enough for smartphone disassembly.

The board works and is easy to reproduce, but has topology and measurement shortcomings.

The module is generally decent, but the capacitors are probably counterfeit and the fuse is incorrectly specified.

The metal covers improve the appearance, but have rough finishing and may need modification to fit the Bluetooth board.

The adapter connected, but the Bluetooth module was missing from the package, and the tester's data-transfer capabilities disappointed.

The controller operates the load autonomously, but has a narrow screen viewing angle and no temperature display.

The adapter works, but its software is picky about phone models, and the standalone logging function failed to start.

Well made, but the author advises against continuous operation above 5 A.

Lower voltage drop makes it suitable for continuous 10 A and brief 15 A operation.

The fan works with a homemade controller, but the author could safely use it only up to 35 V.

The holders are well made, but thin tabs limit their use at high currents.

The holders are recommended, though their thin tabs may be a problem at high currents.

Convenient, inexpensive frames for assembling battery packs, especially with many cells.

Useful for keeping the home clean and picks up dust well, but wires and other items must be cleared from the floor first.

A well-made utility detector, but its actual range is below the stated figure and confident use takes practice.

The engraver is more powerful than the author's 2.5 W model and works faster, but it is noisy and its software often freezes when opening files.

The camera provides good 4 MP image detail for the task, but lacks PoE and has awkward software.

The camera works reliably and supports 5 GHz WiFi, but its connection is weak, image quality has issues, and it lacks PoE.

The protection board works and cuts off at an individual cell’s threshold, but reaches almost 70 °C at 3 A.

The author calls the thermal imager great and recommends buying it.

The Onbon bx-5ql worked with the three RGB panels, and the author found its functionality more than sufficient.

The panels work and display vivid images, but one has a flaky dead red pixel and enabling the thermometer causes interference.

The computer has a good screen and cooling, but a serious USB issue in Windows 10 mars the experience.

The strip loses noticeable brightness along its length and is unsuitable for lighting.

Its PWM frequency is low at 125 Hz; the author recommends it only for occasional use.

The RGBW controller runs at 125 Hz and has no ripple at full brightness.

It performs worst for flicker: the frequency is low, and dips remain even at full brightness.

The Bluetooth controller offers high PWM frequency and very low brightness settings, but requires a smartphone to operate.

The router works and offers many features, but the author notes clock problems and low USB speed.

The box impressed with its unusual design, neat build and stable operation, but cooling is weak and Wi-Fi sensitivity is mediocre.

The protection board worked without observed problems, and the author considers its operation normal.

The screws increased free-running speed but added noise and reduced thrust.

Spiral couplings were fitted to the axes; the author gives no separate assessment of their quality.

The bearings nearly eliminated play, but did not remove it completely.

The author liked the well-built computer and its cooling, but noted fan noise and weak Wi-Fi sensitivity.

The phone has a good display, sound and battery life, but low performance and weak cameras.

The box is neatly built and a good deal on sale, but has weak Wi-Fi, a small heatsink, and an excessively high current price.

The box is well built, plays most test videos and supports AC3 audio; the author could not confirm 5 GHz Wi-Fi.

The hardware is good and does not overheat, but the software needs work and Wi-Fi sensitivity is average.

Read speeds are good, but writes are noticeably slower in some tests; the author finds it suitable as a mini-server system drive.

A decent media player, but WiFi performance is poor and the power supply is decidedly budget-grade.

A neatly assembled budget phone with OTG and a decent camera, but a small battery and weak Wi-Fi sensitivity.

An inexpensive phone with accurate battery capacity and stable software, but weak GPS reception in difficult conditions.

The sturdy case holds cells securely and protects them from water and impacts, but weighs nearly 130 g.

The capacitor was relabeled: measured capacitance was 14,450 µF rather than the stated 22,000 µF.

The heatsinks match the stated dimensions, but their thin bodies suit several evenly distributed components better than one powerful part.

The terminals look decent but are small, and wires can only be connected under the screw.

The case matches its stated dimensions, has mounting posts and uses screws, though too few screws are included.

The module works normally with no obvious drawbacks, though the author notes there is no warranty support.

The Chinese module is genuine and uses Micron chips; tests found it faster than the offline counterpart.

The offline module worked, but comparative tests found it slower than the Chinese counterpart.

The computer is well built and equipped, but its cooling needs improvement and Wi-Fi is slow.

The SSD impressed with its speed and low heat; its main drawback is the lack of a practical warranty.

An ordinary TV box with typical pros and cons; it does not support 5 GHz Wi‑Fi.

The phone is stable and has good battery life, but GPS and sound are weak, and the battery falls short of its rated capacity.

The card works properly, but the outdated PCI bus limits its combined speed, so the author recommends looking for one second-hand.

The author praised the drive’s speed and build quality and found no faults during testing.

The engraver is sturdy and well equipped, but its software is awkward and the cable routing and base need work.

The kit was assembled and printed, but the build revealed inconveniences and shortcomings in the supplied parts.

The large OLED impresses with its viewing angles, contrast, and bright characters, though the cursor occasionally flashes.

Accuracy and beam alignment are good, though the right beam is slightly off; the author likes the device.

The microscope impressed with its image quality and build, but stand play, a stiff cable and software glitches are drawbacks.

The router works reliably, but its interface is Chinese-only and its signal strength is modest.

The camera pleased the author; it adds memory-card recording but has a less robust housing.

It performs slightly better, especially at night, and offers a wider horizontal field of view.

The tablet works excellently and the author considers it worthwhile, though its black surfaces show fingerprints easily.

The board showed decent accuracy for its price, but its build quality is poor.

After cooling modifications, the tablet performed well, but it overheats and has poor battery life.

Well made and provides good contact, but does not fit protected cells; middle cells are difficult to remove.

Well made and suitable for unprotected cells; the review notes good contact and lower losses than ordinary holders.

The kit is well made and functional; the author recommends it for beginners despite signal distortion and the unprotected HS output.

The adapter works and has galvanic isolation, but the claimed speed was not achieved.

The author liked the build, usability and Russian layout; the keyboard does not have the mistakenly advertised air-mouse function.

A compact mini PC with a battery and moderate heat, but Wi-Fi is unreliable and the tested unit had 32 GB instead of 64 GB.

The adapter works, but its real transfer speed is about 6 Mbps, so the author advises looking for something faster.

The transistors work, and their measured channel resistance is lower than the datasheet value.

The hub works at USB 3.0 speeds with its bundled cable, but has an awkward Type-A connector and problems with the video adapter.

Works well up to 1600×900, but the author could not get an image at 1680×1050 or 1920×1080.

The card works without freezing and is well built, but seems expensive and its speed could not be fully tested.

The enclosure works quickly, but the drive board must be insulated from the metal cover.

The rubber can help dissipate small amounts of heat, but the author advises against using it at high power density.

A convenient, well-made timer, but its relay may fail to switch on after 220 V power is restored.

The author liked its design and low heat; under full load the case reached about 45 °C.

The author praises the image quality, features, and reliability, and found no significant drawbacks.

The scales are accurate and convenient, but the author considers them expensive and probably would not buy them.

The tablet impressed the reviewer: it is comfortable after adjustment, well built, and well equipped.

The board works fully and is suitable for upgrading an old LCD monitor; the author found no drawbacks.

The flashlight is well made and works well, but the author disliked its overly narrow beam.

It looks good, but its speed is on par with USB 2.0 and the author considers the price too high.

The well-made IR sensor triggers reliably; the author considers it a worthy alternative to radio-frequency switches.

The clock keeps time reasonably well, displays temperature, and is easy to modify.

The measured inductors are generally close to their marked values; the author considers the quality decent and the assortment useful for hobby projects.

The AliExpress chip performed like the offline sample, and the author is pleased with the purchase.

The offline sample worked like the AliExpress chip; the author found them fully identical.

A neutral taste without much tobacco flavor; usable, but not especially pleasant.

Similar to Tobacco but quickly becomes tiresome; the author thinks ordering 24 mg was a mistake.

The roasted-coffee flavor was the author's favorite: original and not tiresome.

It has a strong, unpleasant paper taste; the author advises against buying it.

The e-cigarette works well and is convenient to use; the author is pleased and recommends it.

The driver revived the flashlight, but three chips burned out; the author advises against buying from this seller.

The reader works, is well built and reads cards quickly from about 8–10 cm, but it needs an external controller.

The tuner works well and found the channels, but it has no slot for paid-access cards.

The fobs work, have unique numbers and good range; the author found no downsides.

The e-cigarette is neatly built and pleasant to use, but the vaping experience is mixed.

The flashlight is bright and neat, but the author considers it nearly unusable because of driver, battery, and contact problems.

The display is neatly made and works normally, but its backlight is very dim and draws a lot of current.

The unlit display with Cyrillic characters was used for comparison and to check the device.

The module works without problems, does not freeze or heat up, and the author found no downsides.

All five screens work and are suitable for video-intercom conversions, though the brightness could be better.

Works normally, with bright, economical backlighting and clear characters; it does not support Cyrillic.

The card worked after solder bridges were removed, but its build quality was very poor.

The remote worked with most tested air conditioners and controlled the old AKAI, but failed with Fujitsu.

The replacement board works fully and appears unrepaired; the author’s only reservation is its high price.

The standalone detector works, and the author recommends having one in every home; the battery must be bought separately.

This inexpensive 24-position encoder works reliably, without glitches or failures.

The capacitors were found suitable, with parameters in range and no failures in 2.5 months; the order was three short.

The compact adapter works better than the old one without connection drops, though BlueSoleil limits transfers to 5 MB.

The driver delivers nearly its rated power, but its current is below specification and startup is delayed.

The strip is bright enough and has a pleasant color, but its power is lower than claimed and voltage drops noticeably along its length.

The chip regulates current; the author tested it in a homemade driver and was pleased.

The inductance was within the margin of error; the author left a positive review.

Marked SS34, the diodes match SS24 in size and specifications; their voltage drop satisfied the author.

The author liked the headset’s range and volume, though its microphone is weak.

The modules work; their characteristics vary somewhat, but the author considers them good for the price.

The capacitors measure well below their stated capacitance; they suit non-critical uses, and the storage box is excellent.

The matrix works and gives acceptable light; the author considers it a good choice for non-critical applications.

The lights work and illuminate the kitchen, but deliver only 2.82 W instead of the claimed 5 W.

All five modules were faulty, though they may still be useful for experiments.