Thus, the speed of a DC motor can be controlled in three ways: By varying the supply voltage. By varying the flux, and by varying the current through the field winding. By varying the armature voltage, and by varying the … Continue reading →

Switching operations include ON-OFF, MOMENTARY-OFF, ON-ON, ON-OFF-ON, and MOMENTARY-OFF-MOMENTARY. These toggle switches are quality built and can switch up to 20 amps of current at 12 volts DC or 120 volts AC. How many amps can a rocker switch hold? … Continue reading →

A three prong plug is designed so that electricity can be safely supplied to electrical appliances. The third prong grounds the electricity to protect anyone who uses the metal-encased appliance from electric shock. Why do some plugs have 3 prongs? … Continue reading →

Fraying: Do you see obvious damage to the USB cable? If you notice that the cord is bent or fraying, it is probably time to replace it. Damage is not always visible, though, so try plugging the cable into a … Continue reading →

Coming in contact with an electrical voltage can cause current to flow through the body, resulting in electrical shock and burns. Serious injury or even death may occur. Can you touch AC current? No, because current always flows in a … Continue reading →

It’s a very comfortable machine to use whether it’s for work or entertainment. Being a quiet operator is the main selling point of fanless laptops. But sometimes, you will need a laptop that’s not only quiet but also has the … Continue reading →

Myth #2: Magnets can damage or erase USB Drives. USB drives cannot be harmed or altered by magnetic fields. The drives are not built from magnetic materials. So magnets pose no danger to any flash memory including SSDs, SD cards, … Continue reading →

Makita is ready to lead the way once again in 2019, we are excited to announcement the launch of our new XGT 40V battery system that will coexist with LXT and continue towards our vision of a battery solution for … Continue reading →

The main complaint is that the cord just stops working unexpectedly; its lifespan is about four-to-twelve weeks. If you’re extremely lucky, you’ll reach the epic six-month mark, but at that point, you’ve probably lost the cord anyways. Do Lightning cables … Continue reading →

Most cars nowadays are designed with a battery-negative earthing system and therefore have a +12V positive power distribution. In such a case, the centre pin of a plug/socket will be +12V DC and the outer casing 0V. Is a car … Continue reading →

Many RV or boat owners use a DC cord to power their TVs. Even though many 12-volt TVs come with a DC cord, many customers choose to purchase an additional DC cord just as a back-up. This DC cord comes … Continue reading →

How Does An RV Inverter Work? An inverter uses the RV’s 12v batteries to supply the power and inverts the battery 12VDC to become 120VAC power for the outlets. In theory, you can power everything with a large enough inverter, … Continue reading →

Once started, a single phase induction motor will happily run in either direction. To reverse it, we need to change the direction of the rotating magnetic field produced by the main and starter windings. And this can be accomplished by … Continue reading →

Yes your battery could have been damaged. The plastic burning smell may have also been caused by a short in the circuit somewhere. If you want to keep the phone if it’s pretty new would be to get it to … Continue reading →

DC Power Connector Cables and Source Wires The three source wires on the other end of the power connector cable connect the array to centralized DC power plant equipment, typically through a bus bar above the cabinet. A qualified service … Continue reading →