Method and apparatus for circuit fault detection with boiler water level detection system

(1) Field of the Invention A fault detection circuit in a boiler-water level system includes a dual-frequency signal generator which develops two AC components with no associated DC component. The two frequencies are mixed and sent through an impedance matching circuit to match the impedance of the...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	Sanders, Gary G
Format:	Patent
Sprache:	eng
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!