Circuit status indicator having liquid crystal display

摘要

An indicator for instantaneously indicating the presence of voltage on a monitored electrical conductor of an AC power distribution system utilizes a high impedance liquid crystal display component providing an "N" display in response to an applied signal. The "N" segment display electrode and associated backplane display electrode are capacitively coupled to the monitored conductor and system ground to provide an "N" display when voltage is present on the conductor.