Abstract: A brake light system for a land motor vehicle including a source of electrical power adapted to be mounted in a land motor vehicle, at least one brake light, a brake light switch connecting the at least one brake light to the source of electrical power and a voltage booster for increasing the voltage of the electric power received from the source of electrical power to a higher voltage which is supplied to the at least one brake light

Abstract: A brake light system and a brake light illumination method including a braking action responsive switch, at least one braking indicator light and braking indicator light actuation circuitry responsive to the braking action responsive switch for initially illuminating the at least one braking indicator light to a relatively high level of illumination and thereafter reducing illumination of the at least one braking indicator light to a relatively low level of illumination.

Abstract: A controller for a PWM converter. The low frequency input impedance is an important parameter of PWM converters. In active power factor correction schemes, this impedance needs to resistive in order to keep the power factor near unity. The controller of the present invention will force the input terminals of a PWM converter, and in particular that of a Boost converter, to look resistive, or with a reactive component as desired. The advantages of the controller according to the present invention are simplicity, low cost, robustness and the fact that it does not require an analog multiplier and does not require sensing the input voltage.