32 lab DC power supplies and electronic loads, scored on price per watt, ripple and noise, resolution, PC control, protection and warranty.
A bench power supply turns wall power into an adjustable DC voltage with a current limit, so you can power a circuit, charge a battery or run a motor without risking it. These rankings cover lab supplies from about $60 to $900: single-output and multi-output, linear and switching, front-panel and programmable. DC electronic loads, which do the opposite job and sink current to test batteries and supplies, are ranked in their own group.
Linear or switching is the first choice. A linear supply has very low ripple and noise, often under 1 mVrms, which matters for audio, RF, sensors and anything analog. It is heavy and gives fewer watts per dollar. A switching supply packs hundreds of watts into a light box for little money, but its output carries more noise. Switchers suit battery charging, LEDs, motors and plating; linear supplies suit electronics work.
Voltage and current come next. A 30 V, 5 A supply covers most hobby electronics. 12 V and 24 V equipment at high current, and 48 V batteries, need a 60 V or higher supply with 10 A or more.
Channels matter if you power more than one rail. A triple-output supply runs, say, a ±15 V analog stage and a 5 V logic rail from one box, and most can tie two outputs in series or parallel.
PC control lets you log readings and script tests over USB or a network. Supplies that document SCPI commands work with common test software and scripts.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
A quiet, precise single-output linear supply for electronics benches that want PC control and remote sense. Less power per dollar than a switcher, but far cleaner output.
Amazon $328A cheap 32 V, 10 A bench supply with memory presets for hobby, charging and repair work.
Amazon $69.99A popular, quiet triple-output linear supply for electronics labs; the default pick for mixed analog and digital work.
Amazon $449A programmable load with every interface built in, for labs that automate power-supply and battery tests.
Amazon $574One adjustable output, from compact 30 V, 5 A linear supplies to 1 kW switchers.
Top rated: Siglent SPD1305X $328
Two to four outputs in one box, for powering analog and logic rails at the same time.
Top rated: Rigol DP832 $449
Programmable DC loads that sink current, for testing batteries, chargers and power supplies.
Top rated: Siglent SDL1020X-E $574
A quiet, precise single-output linear supply for electronics benches that want PC control and remote sense. Less power per dollar than a switcher, but far cleaner output.
Amazon $328The low-voltage, higher-current sibling of the SPD1305X, for 12 V and 5 V work that needs clean, precise power.
Amazon $305A compact, programmable 60 V switching supply that gives a lot of range for the money on a crowded bench.
Amazon $139.99A small programmable 30 V, 5 A supply for electronics hobbyists who want PC control in a compact box.
Amazon $119.99A compact high-voltage switcher for e-bike, solar and battery projects that need more than 60 V.
Amazon $219A popular, quiet triple-output linear supply for electronics labs; the default pick for mixed analog and digital work.
Amazon $449A newer Rigol triple-output linear supply with isolated channels and LAN built in, for labs that script tests.
Amazon $499A quiet triple-output linear supply for electronics labs that power analog and logic rails at once.
Amazon $459A four-channel programmable supply for labs that need many precise rails and automated tests in one unit.
Amazon $897.86The lower-cost triple-output Siglent, for benches that want three linear rails and USB control.
Amazon $344A programmable load with every interface built in, for labs that automate power-supply and battery tests.
Amazon $574A well-supported programmable load for testing power supplies and batteries in an electronics lab.
Amazon $549A 300 W programmable load with fine low-range resolution, for battery and supply testing past 200 W.
Amazon $525A low-cost 300 W programmable load for battery capacity and power-supply testing on a hobby bench.
Amazon $215.99A programmable 200 W load for benches that may later gang several units on RS485.
Amazon $399Each supply is ranked against others of the same type, and scored on its price per rated watt, its output quality, its setting resolution, its PC control, its protection features and its warranty.
| Factor | Measures | Weight |
|---|---|---|
| Value | price per rated watt | 25% |
| Output quality | ripple and noise for a supply; dynamic-mode frequency for a load | 20% |
| Resolution | voltage and current setting steps | 15% |
| PC control | PC interface, LAN and SCPI commands | 15% |
| Protection & features | over-voltage and over-current protection, remote sense, stored setups | 10% |
| Warranty | warranty length | 15% |
How we rank explains each factor in full.
