Lutron is a technology-centered and people-driven company. As a private corporation guided by our founder’s simple but profound Five Principles, Lutron has a long history of significant growth and smart innovations. The very idea was radical. At that time, lighting control was a complicated and expensive affair, requiring bulky rheostats that used a lot of energy and generated a great deal of heat. Consequently, lighting controls were used primarily to dim stage lights in theaters. Most people would never think of having dimmers in their homes because they were just too difficult to install. The substitution was effective because rheostats and thyristors worked in completely different ways. Rheostats dimmed lights by absorbing electrical energy into the rheostat, meaning that electricity was converted to heat in the rheostat rather than to light in the lamp. By comparison, thyristors dimmed the light by interrupting the power flowing to the lamp.