Description: The Model 2002Y 3-Phase Voltage Unbalance Monitor is designed to continuously monitor a three-phase line with a neutral connection for unbalanced voltage conditions. This device will only ...

Description: Protect equipment from problems with 3-Phase power. Models available to protect loss, phase reversal, under and over voltage. All models are multi-voltage and 50/60 Hz. LED indication for ...

SparkFun’s latest tutorial shows you how to work with relays. A relay is an electrically operated switch. In this case, they’re using it to switch a 120V AC outlet. The article carries the ...

A typical rule of thumb for this circuit is to record no more than a 0.50-volt drop with a 0.25 ... charged will indicate ...

Before today, we probably would have said that scratch-built relay computers were the sole domain of only the most wizardly of graybeards. But this impressive build sent in by [Will Dana] shows ...

An electric vehicle’s largest, most important and most expensive component is its high-voltage battery pack. Many newer bespoke EVs are built around their battery pack, and some have even ...

“It hasn’t proliferated more so far mostly because of cost,” Austin explains. “A 48-volt battery and controller are more expensive than an everyday 12-volt starter and battery.” The fragility of the ...

Keeping a portable jump starter in your vehicle can bring you peace ... That includes any gasoline engine and even diesel engines of up to 12 liters, making it great for cars, trucks and ...

Once the starter has been located, it's simply a matter of touching the positive probe of one's multimeter to the solenoid output terminal and touching the negative to the ground; a 12-volt reading ...