There are two types of cells within the heart: the cardiomyocytes and the cardiac pacemaker cells. Cardiomyocytes make up the atria (the chambers in which blood enters the heart) and the ventricles (the chambers where blood is collected and pumped out of the heart).These cells must be able to shorten and lengthen their fibers and the fibers must be flexible enough to stretch.ardiomyocytes make up the atria (the chambers in which blood enters the heart) and the ventricles (the chambers where blood is collected and pumped out of the heart). These cells must be able to shorten and lengthen their fibers and the fibers must be flexible enough to stretch.
â¢ A ballast-compatible LED tube light will not work without a working ballast. The life of a ballast is limited. Any good LED. tube light will outlive an electronic ballast. A ballast-compatible LED tube light will require regular replacements for as. long as the tube light lasts. When the ballast fails, a new ballast will need to be purchased and installed to keep the. ballast-compatible tubes working. Multiply this by hundreds of fixtures throughout a facility, and the incurred cost.
Electronic ballasts and drivers. offer improved efficiency and control of LED, inductive and fluorescent lighting loads, but can also subject the associated lighting. controls to high inrush currents when switched. on, possibly causing damage or reducing the. life of the photo control.