The controller keeps on monitoring the application requirement in a continuous control loop. It then commands the inverter to produce the required voltage and frequency to meet the application requirements. To do this, the controller, comprised of a microprocessor, takes the input signal from the sensor and compares this with a reference signal. It then generates the appropriate control signal for the inverter to vary its output power.

In a typical application, the controller will monitor process parameters such as pressure, flow rate, temperature or liquid level. For example, an oxygen sensor in a boiler provides a signal to adjust the speed of the fan and control the amount of oxygen in the boiler system.

Today’s drives, using microprocessors, semiconductor power switches, and SMDs are now smaller, compact, cheaper, more reliable and efficient. A typical drive will also include a filter to suppress harmonics generated when converting the DC to AC voltage.

Did you know the lighting in your office could be making you feel sick?

Feeling unmotivated and lethargic, suffering from headaches or eyestrain? There are some simple steps you can take to energize the work environment to combat stress and elevate mood by choosing the best lamp for your desk or task lighting needs. 

Healthful illumination is key to an environment partnered with increased productivity and job satisfaction.  The trend today is to improve upon what you already have rather than investing in new construction.  Upgrading your office with affordable and energy-efficient lighting is an investment that leads to outstanding visual improvements and a more healthful work environment.

Employ the Right Lamps for Greater Health Benefits:

Top Picks for Office Lighting:

-Quoizel’s “Zen” collection includes floor and table lamps with Mystic Black finishes and Rattan shades for corporate casual decor.

NAHB), 9 out of 10 people who are looking for a new home are more likely to choose an energy-efficient home. And, they are often willing to pay a little more for it.

cheat sheet to help you choose the right one.

Exterior lighting made the top 5 on the list of most wanted new home features. Make that lighting energy-efficient, and you’ve got a winning combination for attracting buyers. Contrary to popular belief, a low voltage outdoor lighting system doesn’t necessarily save you in energy costs. However, when you add LEDs into the mix, it’s a whole different story. Energy star rated LEDs use about 75% less energy than incandescent lights and last 25 times longer. Installing an walk into an empty room that still has every light on? Lighting controls like occupancy sensors save energy by detecting body heat and dim your lights, it reduces energy use and extends the life of your bulb. According to Lutron’s bathroom, bedroom or Earth Day Energy Center.