Electric motors power everything from tiny electronics to massive industrial pumps. Yet, they all work on the same basic principles. Though AC motors seem ordinary, there are complex activities going on behind the scenes.

The simplest types of motors are three-phase AC motors. They convert a rotating magnetic field into mechanical rotation. The basic parts of an AC motor are the stator, rotor, bearings, drive shaft, and frame. The supply power is connected to coils of wire that are wrapped around laminated iron cores in the stator; the stationary part of the motor. When the coils of wire receive current, they generate a magnetic field known as poles. Each phase of power has the same number of poles; the poles are spaced evenly around the stator.

Historically, speed control of three-phase induction motors was very difficult. The only way to change the operational speed is to change the frequency of electricity supplied. Today, this task is accomplished by use of a variable frequency drive or VFD. This device is made of three main components: a rectifier, a DC-Link, and an inverter. The rectifier takes the incoming AC voltage and converts it to DC voltage that can be used by the electronics in the VFD. The DC-Link then uses capacitors to help smooth out the DC voltage from the rectifier and feeds it to the inverter.

The inverter then converts the DC voltage back to AC voltage. The inverter also controls the output frequency of the AC power by sending precisely timed pulses of DC power at specific voltages to rebuild the AC sine wave.

With a VFD, not only can the output frequency be controlled, but it can be slowly ramped up. This allows for smoother starting and can be adjusted to keep a motor spinning at a specific frequency. VFDs can produce three-phase power from a single-phase source, or even a DC source, to power highly efficient three-phase motors in locations without a three-phase supply. VFDs can also be incorporated into a PLC system to allow for automatic or remote control.

The combination of a VFD and AC motors offers a wide variety of functions and increased efficiency. Basic understanding of these technologies is essential for any electrician.

Technology is transforming our lives. It seems like each day there is a better way to live our lives with technology. As a homeowner with an older home, you may think that incorporating some of these technological advances in your home is cost-prohibitive, but it’s not. The following are a few ways you can make your home smart, without it costing you and arm and a leg.

If you own an electric car, or you are considering getting Tesla’s new Model 3, we can help you install sockets that will allow you to charge your car faster since traditional outlets may take a little longer.

Were you the lucky recipient of a fabulous hot tub this holiday season? If so, you are probably eager to have it set up as soon as possible. It may be the middle of winter, but the California weather makes it the perfect time of year to enjoy the hot water while enjoying the brisk night air after a long day. It is a relaxing experience and you are likely eager to get to it. You will need to call a Burbank electrician to schedule your install appointment. The friendly team at The Electric Connection is on hand and ready to take your call.

It is imperative you do not try and install the hot tub by yourself. There are some technical things that must be done in order to install the hot tub properly. The first order of business is to have an electrician come out and check your electric panel to determine if you have the space needed to install an additional 240-volt outlet. That is what your hot tub will need to operate. If you don’t have the available space in your current electric panel for the additional breaker, you will need an electric panel upgrade. When the electrician does the initial inspection, he or she will let you know what you will need.

The hot tub will need to be hard-wired to your home’s main electric by an electrician. Burbank residents will also need to check with their county to determine what permits are needed for a hot tub installation. Depending on where you plan on placing the hot tub, the wiring from the hot tub to the home will need to buried. Keep this in mind as you decide where you want your hot tub. If you are ready to get your new hot tub up and running, give The Electric Connection a call today.

I mean, this is crazy, right?! You can almost FEEL the presence of these weird light dudes as they approach you at a murderously slow pace. Are they astronauts on our own planet? Is this our planet? I was unable to locate a larger version of this photograph, but I still put it at the top because it is incredibly evocative. And that’s not even the real kicker. If you’ve read my other posts on light painting, you know that incredibly long exposure times are necessary for shots like this. So homegirl or homeboy was out in the snow, in the dark, making this thing. And she/he had the wherewithal, tromping through the icy powder, to render these human forms so very well, even making one look like he’s trudging knee-deep. So weirdly inhuman. So weirdly human. I love this photo.

2. Give Up the Ghost

I would never give you a photo of old shoes to look at unless there were something special going on in the picture. In this one, there’s a simple, appropriate message. Ready for it? LIGHT ENHANCES THINGS. Duh, right? This photo is aesthetically interesting, but more valuable to me is the way it shows the essential point of light painting: To have fun! To breathe some excitement into your photography. If your only subject is an old pair of Tims, don’t complain. Turn off the lights and bust out a “paintbrush.”

7. There Are ALMOST No Words for This

Isn’t this great? What I love most is how nonchalant and, well, normal the guy looks in this photo. See? It’s all about juxtaposition. Angel wings mixed with a loud sense of everydayness (he COULD be wearing white robes) make you take notice of the unspoken contradiction. You ask, Why this? And you are led to wonder if maybe this is saying something about how sometimes the people who are the most inconspicuous are the most angelic. See what I did there? That’s why I have chosen these photos from among the hundreds that are out there. They invite wonder and have the power to lead to new insights. I am a dork.

9. Do Not Anger Him/Her/It

* Note: I found these photos on Pinterest and was unable to confirm all of their original sources. So, if you have any information about the original sources for any of these photos, please let us know in the comments sections. We want to give credit for these fantastic light painting photos where it is very much due! Thanks!