OFF-DELAY TIMING APPARATUS

OFF-DELAY TIMING APPARATUS

A device for supplying current to a load from a relatively wide range of D.C. and A.C. voltage sources, and affording time delay-OFF mode of deenergization upon opening of a selector switch. An electric illuminous indicating device provides indication of steady state and time delay-OFF modes of oper...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: VAN HORN L,US, ELLIOT W,US, SCHUCHMANN R,US
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
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Beschreibung
Zusammenfassung:A device for supplying current to a load from a relatively wide range of D.C. and A.C. voltage sources, and affording time delay-OFF mode of deenergization upon opening of a selector switch. An electric illuminous indicating device provides indication of steady state and time delay-OFF modes of operation by steady and blinking illumination conditions. Provision is made to prevent improper operation of the device when the leakage current resistance shunting the open selector switch circuit exceeds, for example, 40,000 ohms. Unwanted operation due to transient voltage and current conditions is provided by extensive use of suppression and blocking devices.