Measurement database: power supplies

It works for low-power, undemanding loads, but delivers less than rated, has noticeable ripple, and raises safety concerns.

A budget supply with low high-frequency ripple, but noticeable low-frequency spikes and a hot transformer at full load.

It handles heat well and operates steadily, but ripple reaches 800 mV at maximum current.

This compact supply manages about 7 A, but the author advises roughly 6 A for continuous use; ripple spikes are very large.

Actual maximum power is about 30 W, with 20–25 W sustainable; ripple is moderate.

Delivers 3 A with little thermal headroom; the overcurrent threshold is very high and there is no thermal protection.

The protection is set correctly and heat is not a concern, but output ripple is high.

Heating limits sustained current to 3.5–4 A rather than the rated 6 A; ripple reaches about 650 mV.

Neatly made, but the author advises limiting it to 75–80 W because of heating; ripple is high.

Protection is set correctly, ripple and heating are within limits; the author considers it a reasonably good 100 W supply.

Neatly assembled, but actual power is only about 60 W instead of 120 W, and it overheats at 6 A.

A decent conventional supply, though its protection threshold is high and ripple could be lower.

A robust supply with typical performance; the author notes only a slightly undersized input capacitor.

A good supply with low ripple and heat, higher efficiency and active PFC, but a relatively high price.

A simple PSU with low ripple, but its varistor is placed before the fuse.

A decent PSU with about 40 mV ripple at maximum load and moderate heating.

Ripple is 30 mV, but the transformer heats noticeably at rated load.

The PSU showed low ripple and good thermal headroom, even under overload.

It handles overload with headroom, but ripple and inductor heating draw some criticism.

It performs well at rated load and nearly 15% overload, though its protection threshold is set too high.

Very low ripple and headroom for 360 W operation, though the inductor heats noticeably under overload.

Ripple is about 40 mV, with thermal headroom even at maximum output.

Ripple is good, but it overheats above 1.5 A; the author also doubts the input capacitor rating.

The stripped-down design overheats its transformer at 1.5 A; the author estimates sustained output at about 1 A.

It handled 2 A without overheating; the main drawback is elevated high-frequency ripple.

It handles its rated 3 A well, with low ripple and moderate temperatures; the transformer heats up at 3.5 A.

It has an unsafe ordinary interwinding capacitor, high ripple, and a very hot output diode.

Ripple is acceptable for a budget unit, but it overheats at 2 A; sustained use is better limited to 1.5 A.

After the revisions, it handles 3.2 A without overheating, with acceptable safety and ripple.

It performs much like the adapter version: temperatures remain normal and it handles the rated 3 A.

It handles 4 A with low ripple, though its thermal headroom at full load is limited.

It runs at 4.2 A with some headroom and low ripple; component temperatures remain acceptable.

It performs very well at 5 A, with very low high-frequency ripple and moderate temperatures thanks to synchronous rectification.

It handles 6 A with ample thermal headroom; the author says it could technically deliver 6.5 A.

It runs at 8 A without overheating, with low ripple and no concerns from the author.

Ripple is very low, but components overheat during sustained 10 A operation; the author recommends 8–9 A instead.

A decent supply delivers up to 15 W, though a lower protection threshold and an output filter would help.

Decent overall, but diode overheating limits it to 4 A for continuous use.

Very decent: it handles 10 A easily with low ripple, but needs a stronger inductor for continuous 10 A.

A decent 75 W supply, but its output inductor overheats at 100 W.

Actual power is about 75% of rating; the inductor and diode assembly overheat at full load.

It overheats at full power; upgrading is uneconomical, and ripple is substantial.

It easily delivers 200 W with low ripple and moderate heating, but the fan and input capacitors are concerns.

Well built and runs cool, but its protection limits practical continuous power to about 75 W.

Well built and efficient, but the author puts its realistic continuous power at about 150 W.

A well-made supply with good test results, but the author considers about 250 W its realistic continuous power.

A compact supply with honest output and low heating, but its protection trip current is much too high.

It delivers the rated power and performs well, but has substantial 100 Hz ripple and an underspecified output capacitor.

A decent supply, but the author recommends keeping continuous load to 15 W.

Generally usable, but the author flags poor electrical safety and overheating output diodes.

A decent supply with about 30 W real capacity, though ripple swings considerably with no load.

It falls short of 48 W: the transformer overheats, and the author considers it closer to a 36 W model.

Relatively decent, but the author puts its real capacity at no more than 60 W, possibly around 50 W.

Relatively decent, but the author says it is effectively the same 60 W supply, not a true 72 W model.

The author generally liked the units, but the 60 W model has insufficient input capacitance and components run hot under load.

The 100 W model reaches about 89% efficiency and pleased the author, though its output rectifier transistor gets very hot.

The 150 W model has about 89% efficiency, but its snubber and power transistors overheat under load.

The 200 W model achieved 90–91% efficiency and good temperatures, but has low input capacitance and noticeable 100 Hz ripple.

It is neatly assembled, but overload protection is set far too high and the heatsink is dangerously close to high-voltage traces.

A decent power supply with tightly set protection and noticeable ripple.

A decent unit, but ripple is high; its protection is set for about 60–65 W.

Low ripple and acceptable heating at 60 W, but the protection threshold is set much too high.

Effectively the same as the 60 W model: ripple is fine, but heating is high at 75 W.

Good ripple and protection; in practice, it is a quality unit of about 100–110 W.

Low ripple, but in reality it is a 100–110 W unit rather than a full 120 W supply.

Reliable at roughly 200–250 W; the protection threshold is high, but ripple is low.

Effectively a 250 W model: thermal protection activates under sustained overload, while ripple is acceptable.

Low ripple and thermal protection; the author puts its realistic sustained current closer to 25 A.

A well-built compact PSU, but it overheats during sustained 6 A operation without airflow.

The 24 V version had lower ripple and sustained 4 A operation despite a 3 A rating.

Generally decent, but its protection trips far above the rated current; the author suggests staying below 2.5 A for continuous use.

It can supply 4 A, but the author recommends limiting continuous use to about 3–3.5 A.

Similar to the 1204, but the diode assembly reaches 125°C at 5 A; the author advises staying at or below 4 A continuously.

It overheats at just 4 A; the author considers it a 3 A supply and says modification is not worthwhile.

Generally acceptable, but its practical operating current is about 5 A; it overheats at 6 A.

Practical output is no more than 6 A; ripple is low, but it overheats severely at 7 A.

The output diode overheats at 1 A, though the author considers it adequate at lower loads.

It can run continuously at 2 A, but the output diode gets hot; the author recommends 1.7–1.8 A instead.

It sustains 3.5 A with modest temperatures and low high-frequency ripple; the author notes a safety concern.

It handles its rated 4 A and tested 4.5 A with good temperatures, though the author notes a safety concern.

Delivers its rated power with acceptable ripple and stability, but has poor electrical safety.

Efficiency is slightly higher than the 18 W model; ripple is considered acceptable, but electrical safety is poor.

Ripple is tolerable, but the unit generates substantial interference; the author does not recommend it.

It generates strong interference and overheats under sustained rated load; the author does not recommend it.

Safety, voltage drop and overheating are concerns; the author estimates its practical power at about 36 W.

Ripple and safety are concerns, but it is usable at reduced load; the author estimates practical power at about 50 W.

Sustained power is at most 45–50 W, but the author mainly rejects it for interference and poor safety.

Interference is absent and ripple is tolerable, but the author advises limiting load to 55–60 W because of heat and poor safety.

The author praises its stability, efficiency and low ripple, recommending it with a practical power rating of 70–80 W.

The author likes it; stability, efficiency and ripple match the HCF-100, but practical power is estimated at 70–80 W.

Suitable for only about 18–20 W continuous output; at 2 A the diode heats to nearly 120 °C.

The better-performing GaN-based unit; the author recommends about 3.5–4 A for continuous use.

The PSU impressed the author under load, though its protection threshold is too high and a capacitor presses against the cover.

A quality power supply that handles 120% load with low ripple and stable output voltage.

The supply handled testing and heat well; the author notes only unusual ripple.

The author praises its operation and thermal headroom; ripple is low despite an unusual low-frequency component.

The author recommends it, praising its build, ripple and temperatures; efficiency is about 92%.

A very good supply, but the author advises against overloading it and recommends lowering its overcurrent threshold.

The 300 W unit impressed the author: protection, temperatures and ripple were all satisfactory.

The 400 W model delivered 410 W, but ran hot above 32 A and its protection threshold was incorrectly set.

A well-built PSU with low ripple, but it delivers 200–250 W instead of the claimed 400 W.

A good supply: delivers 130 W at 230 V with normal temperatures and low ripple.

A decent 80–85 W supply, but it does not deliver the claimed 120 W; ripple is higher without an output choke.

The supply was generally liked, but its varistor is before the fuse and ripple is high.

It handles overload, but the protection trip current is set too high.

A good supply with low ripple, properly set protection, and acceptable temperatures.

A decent supply with accurately set protection, though the transformer runs hot and the input capacitor is undersized.

Well designed, with low ripple and modest heating, though one output diode assembly gets too hot.

Neatly built, but realistically suited to about 100 W continuous, not the claimed 400 W.

Well built, but delivers about 200–240 W continuously, well below the claimed 400 W.

It sustains nearly twice its rated power, but overload protection is set too high and ripple is substantial.

The author liked it best for its low ripple, power headroom, and stable operation under sustained load.

It handles rated power with stable voltage, but output capacitance is low and ripple is high.

It failed during testing; the author criticizes its excessively high protection threshold and low output capacitance.

It works reliably at about 60 W from either 115 V or 230 V input, with acceptable ripple and case temperature.

Ripple is low, but cooling problems limit sustained operation to roughly 30–32 A.

It is a decent unit at about 500–550 W, but overheats at 51 A and has noticeable ripple and voltage drop.

It handled sustained operation at 5 A, but ripple is high and the output capacitors are rated for only 16 V.

The board heated noticeably at 7 A; the author thinks the potted unit may manage its rated current.

It is generally decent, but ripple is high at maximum load and input capacitance is too low for reduced mains voltage.

It unexpectedly endured testing up to 265 W; the author expects it to work well at its rated 200 W.

The author liked its topology and low ripple, but the board overheated at maximum load without potting.

A good supply for about 200 W continuous, but at 250 W the diode assembly and inductor overheat.

A well-built supply with good results, but the author advises against continuous loads above 330 W.

A budget PSU with good high-frequency ripple and power headroom, but noticeable low-frequency ripple.

A budget PSU with acceptable temperature and efficiency, but high low-frequency ripple and insufficient input capacitance.

It can deliver about 216 W, but the output rectifier and inductor run hot, and low-frequency ripple is high.

It showed low ripple, full output power and extra headroom, though its input capacitor was counterfeit.

It delivers its rated power with low ripple and has useful headroom at reduced input voltage.

The author liked its topology and overvoltage protection, but found the input capacitor undersized.

It is effectively a 230–250 W supply; the undersized input capacitor and higher ripple are drawbacks.

After modifications, it works well, with 85–87% efficiency and low high-frequency ripple, though it has shortcomings.

It works reasonably well, but the lead-acid battery has no over-discharge protection, so use without a protection board is not recommended.

The author liked the new version, found its test results good, and recommends it.

The power supply was modified for more correct charging; the author makes no separate judgment about the PSU itself.

The supply was restored and converted into a charger delivering about 25 A.

The supply was restored and converted into a charger; after adjustment it delivers 24.7 A.

The third supply was restored and converted; its adjusted current was about 24.6–24.7 A.

The power supply handles high loads well, but it buzzes and has high ripple.

The author is very pleased with its performance and build, but says the overheat protection is too slow to act.

A quality supply with excellent regulation that handled sustained 6 A; the author noted 16 V output capacitors and 100 Hz ripple at 4 A.

The compact power supply showed good stability, low ripple, and solid performance under overload.

The supply remains stable at twice its rated load, but has cheap terminals and a hot output diode.

The PSU handles 360 W confidently, but its fan is noisy and one transistor gets quite hot.

The repaired UPS works, but delivers less than its rated power, overheats, and has other shortcomings.

Rated at 240 W, the supply delivered only about 50 W and overheated.

A well-built supply with low ripple, but its output voltage sags noticeably under load.

The driver withstood elevated input voltage and a short circuit; the author considers this protection approach viable.

A second LRC-60 driver in IP66 form is mentioned, but the reported tests are for the IP20 version.

The power supply worked after repair, but startup under resistive load was erratic and the cause of failure remained unknown.

After replacing the PWM controller, the power supply operates stably under loads up to 2.5 A.

The author unequivocally recommends it; regulation was excellent, and the modified unit ran under load while charging a battery.

After repair, it holds its output and handled about 45 W, though the author has reservations about its design.

The author liked its excellent filtering and lack of heating concerns, but says it is poorly suited to UPS conversion.

The unit was repaired and tested for an extended period at 3.5 A; the author considers it almost equivalent to new.

The unit was repaired and tested for an extended period at 3.3 A; the author considers it almost equivalent to new.

After repair, the power supply handled loads up to 7 A without further issues.

After capacitor replacement it handled the rated 10 A, but showed substantial heating.

The original UPS charged poorly; after modification, the author raised output power to 85 W and charging current to about 1.8 A.

The supply works, but the author would not use it for a laptop without modifications; after modification, it is usable for a monitor.

The PSU impressed in sustained overload tests, but ripple, capacitors, and the bent chassis were drawbacks.

A compact PSU with high power and efficiency; the author notes its limited adjustment range and transformer heating.

The PSU showed low ripple, accurate voltage and moderate heating, but the author notes its high price.

It delivers its rated power and holds voltage accurately, but runs hot and is expensive.

After modification, the PSU is stable, but sustains full power only with forced cooling.

The compact supply works well at 6 W and sustains 9 W, but it lacks a fuse.

The PSU had low ripple and handled overload confidently, but the components were cost-cut.

It delivers the stated performance with low ripple, but the design is bulky and a capacitor gets very hot.

A compact PSU with low ripple and ample power headroom; the author notes that its thermal protection is poorly calibrated.

Overall, the power supply is decent, but needs cooling for sustained operation at its rated power.

The homemade supply worked, but needed fixes and initially handled abrupt load changes poorly.

The included LG power supply is listed as the clock's power source; it is not separately tested or assessed.

The supply showed good regulation and low ripple; the author was pleased with its quality despite finding debris inside.

A reasonable alternative to other supplies, but the transformer overheats under a sustained 5 A load.

A reliable industrial PSU with power headroom, but with high ripple and excessive no-load consumption.

It handles the load well with low ripple, but its output capacitance is low and it may be incompatible with the converter.

The power supply works reliably, and inspection revealed quality components and over-temperature protection.

The supply meets its stated specifications, and the author recommends it.

It stabilizes current well, runs cool and withstands high input voltage, but starts slowly and has noticeable current ripple.

It stabilizes current well and withstands high input voltage, but runs about 4°C hotter than the first model and starts slowly.

In the comparative test, its current ripple was twice that of the LRC-60-1400.

The author used a 12 V, 40 W Sanmim supply in the assembled device.

The supply showed good regulation and low ripple; after warming up it can deliver about 5.5 A continuously.

Low ripple and good regulation, but after warming up the supply cannot sustain its rated 2.5 A.

A generally decent power supply, but its snubber resistors should be replaced and the fan is noisy.

After modification, charge current is reduced, noise is nearly eliminated, and output power reaches 170 W.

Well-built and efficient, but it whistles, runs hot, and has high ripple.

The supply showed excellent regulation, low ripple, and confidently handled sustained loads up to 150%.

All five boards worked reliably and pleased the author, but component quality and board condition varied.

WX-DC2416 performs better than the other unit and delivers its rated power, but sustained power is at most 150 W.

AC-DC2416 showed very strange output ripple, higher temperatures, and an incorrect output resistor.

It works, but without active cooling sustained output above 150–160 W is not advised; ripple reaches 650 mV.

The used supply handled 65 A, with low ripple and strong test results.

After modification, the supply is usable, but its snubbers overheat, the fan is noisy, and output voltage varies.

The PSU showed excellent stability, did not overheat, and had acceptable ripple.

The PSU handles overloads well and has low ripple, but draws about 2 W with no load.

The author modified the supplies from 50 V to 43.5 V and connected them in series; at 150 W load they reached 55 °C.

This compact, well-built used PSU handled 470 W, but has high ripple and a loud fan.

It fails to deliver its rated power, and its active cooling is paired with no overheat protection.

It delivers the rated 120 W with stable voltage, but build quality and ripple are poor.

A compact PSU with low ripple and strong overload performance, but its over-power protection is set far too high.

A neatly built supply with protections and low ripple; the author preferred it to unbranded alternatives.

The power supply showed ample power headroom, low heat and low ripple; the author recommends it.

The compact supply holds its rated output well, with low ripple and overload, short-circuit, and overheat protection.

It works and stays reasonably cool, but ripple is high, protection is erratic, and output barely reaches its rating.

This inexpensive power supply handles the load well, has low ripple, and is recommended by the author.

It performs well up to 240 W but overheats; sustained use calls for modifications and a fan.

The 12 V, 1 A power supply was deemed junk by the author.

The PSU is well built, but its ratings are overstated; the author puts its real continuous power at about 50 W.

The author liked the supply: it was stable, survived an overload, and reached 55 °C at 400 mA.

Ripple meets the specification, but continuous output is only about 200 W; 400 W is available briefly.

The author liked the board: it holds 12 V up to 8 A, and about 11 A with the added SMD resistor.

The PSU regulates voltage well and has effective protection, but its ripple exceeds the specification.

Preferred over the HDR-60 for lower ripple and higher power, but an unsoldered capacitor was found.

Accurate regulation, low heat and effective protection, though the author notes ripple and some design issues.

It showed high efficiency, low heating and low ripple, though the author noted several safety concerns.

The power supply is well made and efficient, but overheats; it can deliver only 250–300 W continuously.

The PSU sustained up to 7.5 A without cooling, but had short ripple spikes up to 175 mV.

The PSU passed the tests; the author praised its build and protections but noted that the transformer runs quite hot.

The power supply works normally under load, but the author finds its flat-pin plug inconvenient.

Well built and handles the load reliably, but it buzzes noticeably, has high ripple, and is difficult to repair.

It regulates well with low ripple, but overheats at its advertised load.

The author liked it: it delivers about 25 W continuously and up to 45–50 W briefly.

It holds voltage up to 0.9 A but gets very hot under sustained overload; the author considers it quite good overall.

It sustains only about 4.5 A; output current and power fall short of claims, and severe ripple appears after warming up.

Works reasonably well up to 2 A, but overheats from 2.5 A and is unsuitable for sustained use.

Delivered 595 W in a one-hour test, but the author considers 450–480 W its continuous rating and notes overstressed components.

It handled the full load with decent efficiency, but its build and component quality are poor.

The power supply is simplified and lacks an input filter, but it stayed cool and caused no problems in use.

Passed all tests, stabilizes voltage well and does not overheat much, but has shortcomings in components and insulation.

It works well as a power supply and lock switch, but the battery charging and over-discharge protection need improvement.

The author considers the included power supply passable, but says it is suitable for only 6–8 W.

An average Chinese supply: it passed the tests with low ripple, but component choice and build quality raise concerns.

The supply has serious assembly defects and low-quality components; its transistor reached 80 °C at about 25% load.

The 5 V, 200 W supply had extremely poor build quality, including inadequately secured power components.

The included 5 V, 2 A supply gets quite hot; the author plans to replace it.

The included power supply is well made and has input and output filters.

An accurate, well-regulated supply with low ripple; the author liked it despite stiff buttons and a noisy fan.

The author considers the power supply quite decent; it gets barely warm in use.

The included 12 V, up-to-5 A power supply could not be opened; no testing is described.

The author praises the Astec's construction but suspects relabeling and reports no output measurements.

A budget power supply with no input filter or fuse; the author also notes missing output filtering.

The transformer works normally and reaches 52–55°C at full power, though the regulation headroom is small.

The PSU is well built and barely warms in use, though the author would replace its output capacitors with higher-voltage ones.

The power supply charges the tablet, but the author recommends replacing it due to poor quality.

The author considers the included power supply good quality; it was barely warm under full load.

The power supply is cheaply built, but it does have a proper fuse.

The power supply was inspected; the author noted undersized input capacitors and recommended replacing them.

The author mentions these supplies as the project’s power source and describes modifying them, but gives no overall verdict.

The power supply was used to test the soldering iron; the author found a misinstalled diode.

This simple PSU delivered three times its rated power while maintaining stable voltage and acceptable ripple.

It meets its rated specifications but has little power headroom and no fuse.

It performs excellently at its rated load and has the lowest ripple of the tested PSUs.

Output voltage is reasonably stable, but ripple is noticeable and it whistles at low load.

The PSU delivered more than its rated power with low ripple, but needs several modifications.

A well-built lab supply with very low ripple and strong performance, despite a few minor drawbacks.

It delivers its rated power with good stability and low ripple, but failed under overload.

It regulates voltage well, but the inductor overheats and ripple rises at maximum current.

The author mentions an old power supply used for years but does not report testing it.

A well-made power supply, but it overheats at maximum load and has high ripple.

It handled up to 6 A and stayed cool, but without modification it has high ripple and output-voltage sag.

The PSU worked steadily at its rated 100 W and handled a test near 120 W, but has safety-related shortcomings.

Works adequately up to about 1.5 A, but voltage sags at higher loads and it can interfere with some touchscreens.

The included power supply is rated at 5 V and 2 A; it warms during use but does not overheat.

The author rated the included power supply positively, praising its neat construction and good quality.

The 5 V, 2 A power supply buzzes slightly but ran a 2.5-inch drive without problems.

The compact supply performed well with low ripple, but its interwinding capacitor should be replaced.

The supply showed good regulation and met its stated specifications; the author liked it.

The PSU handled a 47 W load without excessive heating, but its output voltages vary greatly and the 12 V choke needed replacement.

It works, but ripple is high and it is unsuitable for full load; the author recommends limiting the current.

The DIY power supply was built and tested at a 1.5 A load; no final measured performance figures are given.

The author found the power supply acceptable, but noted it did not have a European plug.

The power supply works acceptably, but the author advises against running it at 100% load for long periods.

The author considers the power supply, rated at 5 V and 500 mA, to be low quality.

It operates under overload, but the author considers it suitable for small loads.

The homemade power supply started without adjustment and handled an accidental short circuit without trouble.