Circuit arrangement for limiting input voltage at connection pin of integrated circuit (IC) includes gradual limiter and filter circuit comprised of two separate circuits

摘要

The arrangement (5) is designed as a gradual limiter and filter circuit to limit that input voltage at a connection pin (16) of an IC (1). The arrangement includes a first circuit (51) designed as a voltage limiter circuit and a second circuit (52) designed as a low pass filter circuit. The first circuit includes current limiting elements such as a resistor (51b), an inductor and a diode, particularly a breakdown diode (51a). An independent claim is also included for an electronic fluorescent lamp ballast.