One way to make the TRIACâs current waveform more symmetrical is to use a device external to the TRIAC to time the triggering pulse. A DIAC placed in series with the gate does a fair job of this: (Figure below) DIAC improves symmetry of control
Humana Inc. is a Louisville, Kentucky-based for-profit health insurance company. As of 2014 Humana has had over 13 million customers in the U.S., reported a 2013 revenue of US$41.3 billion, and has had over 52,000 employees. In 2013, the company ranked 73 on the Fortune 500 list, which made it the highest ranked (by revenues) company based in Kentucky.
Today, Global HR Research has 80 employees working in 26,000 square feet of office space near Interstate 75 in Fort Myers. Phillips declines to disclose revenues, but they rose 60% last year compared with 2011, he says. The firm now has more than 1,500 clients, many of them Fortune 500 companies, he says.