00:00If you've ever blown up a bench supply because you tested it into a coil of wire, this one's
00:04for you. I went digging for the best cement power resistors for load testing, and I found
00:09five that are cheap, tough, and actually accurate enough to trust. Let's get into it.
00:16Starting with the BPR-56 non-inductive wire wound cement resistor, 5 and 10 Watt, covering
00:21everything from a hundredth of an ohm all the way up to 10K. The non-inductive part is the
00:26reason this one leads the list, if you're load testing switching supplies or amplifiers,
00:31a wound resistor with inductance will lie to you about what your circuit is doing.
00:35This one won't. It's $3.99, nearly 5,000 sold, and a perfect 5-star rating.
00:43If you only buy one set for serious testing, make it this one.
00:47Next up, a 10-piece pack of the same BPR-56 series for $2.62.
00:53Same 5 and 10 Watt bodies, same range from 0.1 ohm to 10K, and you get the values people
00:59actually use, 0.33R, 1R, 10R, 100R, 1K, 10K. 10 resistors for under $3 means you can build
01:08a proper dummy load with parallel banks instead of babying one part. 4.9 stars across nearly
01:144,800 sales. It's the everyday workhorse pack. Third, and this is the value pick,
01:21a 10-piece ceramic BPR-56 set for $1.44. Same spec sheet, same range, same 5 and 10 Watt
01:29ratings,
01:30full 5 stars. Under $1.50. Honestly, at this price you stop worrying about cooking one.
01:38Buy two packs, cook a few learning where the real limits are, and still spend less than a coffee.
01:43For hobby bench work and current sensing, this is the smart money.
01:48Number 4 is the RX27 Vertical Cement Resistor, 5 pieces, and it's $0.75.
01:55$0.75. The vertical body is the feature here, it stands up off the board,
02:00so airflow gets underneath it and it dumps heat much better than a flat-mounted part.
02:04Range runs from 0.01 or all the way to 100K, and it comes in 5, 7, and 10 Watt
02:10versions.
02:124.8 stars. If your load bank runs hot, vertical mounting is a real upgrade for pocket change.
02:19Last one, a 10-piece mixed pack that adds 20 Watt parts to the lineup for $5.55.
02:25That's the highest power handling on this list, and the value spread is wide, 0.1R,
02:300.25R, 0.5R, all the way up to 6.8K. Full 5 stars. If you're testing bigger supplies,
02:39motor drivers, or battery packs, those 20 Watt bodies give you headroom the 5 Watt parts just
02:44don't have. It's the priciest here and still under $6. All 5 links are down in the description,
02:52prices included. If this saved you a blown supply, hit like and subscribe, I do this every week.
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