Staircase light switch that can be touched at night has touch signal lead directly connected from rectifier to timing circuit

摘要

A staircase light switch comprises rectifier (2) feeding a time circuit (3) and relay (4) to feed stair light(s) (50). A touch signal lead (6) has a direct galvanic trigger side connection with the rectifier through a voltage divider with timer circuit switched to a mains filter capacitor so that a threshold is only exceeded by a touch switch (60) operation.