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Short answer: no. Power supplies designed for paralleling generally have a separate signal wire that goes between the (usually identical) units to coordinate output voltages and so forth. If there i …

I would put a dedicated DC-in USB supply instead of a buck converter close to the tablet and run 12V from your wall wart to the USB supply. The issue with your setup now is that you are seeing voltage …

From the datasheet: VO1 and VO2 ENA have to be pulled to ground to enable the respective outputs.

Hard to tell from the picture and the datasheet is near with the details, but those look like they could be turret terminals. Search for "turret solder" and you'll find some videos and diagrams. Big …

Wire the lights in parallel (which it sounds like you're planning on doing) to easily accommodate different lengths and to make replacing burnt out lights easy. I would try to find some lamp holders …

Home UPS aren't designed for peak-shaving. Any system that could do that would have to know what the load is on the entire circuit (i.e. what the rest of the loads are drawing) and then try to supply …

Short answer: not like that. Long answer: RJ11/RJ45 (aka 8p8c) connectors aren't made for delivering power. PoE is a bit of a kludge that uses higher voltages to reduce the current to what can go thr …

There are plenty of 5V DC-DC converters that will happily take 9V in. Something in the 3-5A range is recommended and will probably be around $25 from a reputable source. With current ratings you are …

That is correct; match wattage between the two supplies.

It's a convenient place to attach multiple loads to the same supply so you don't have to splice cables, stack terminals, daisy-chain banana plugs, or clamp alligator clips onto each other.

Those wires can be anywhere from 20 to 30 AWG. At 20 AWG you should be fine carrying up to around 10A, less if they're bundled or otherwise covered. At 30 I wouldn't put more than a few hundred mA t …

8A nameplate rating should be sufficient to run a 5A circuit (though the motor starting surge might trip some internal protection), but the furnace manufacturer should tell you the recommended power s …

If the motors are rated at 250W, then you need a 500W supply, 20.83A unless you test at your desired max torque (but how will you power the test?). However the starting current surge can be 3x the rat …

I would take a look at servos for this. They take a pulse width modulated (PWM) signal and rotate an output shaft to a specific repeatable position based on the duty cycle (ratio of on time to off tim …

The first problem you'll run into is dropout voltage, the minimum (positive) difference between the input and output voltages required by the regulator's circuitry. For the ancient 78xx series, this …