Power saver circuit for audio/visual signal unit

Patent · Tue Feb 12 00:00:00 EST 1985

OSTI ID:5559136

Right, R W

A combined audio and visual signal unit with the audio and visual components actuated alternately and powered over a single cable pair in such a manner that only one of the audio and visual components is drawing power from the power supply at any given instant. Thus, the power supply is never called upon to provide more energy than that drawn by the one of the components having the greater power requirement. This is particularly advantageous when several combined audio and visual signal units are coupled in parallel on one cable pair. Typically, the signal unit may comprise a horn and a strobe light for a fire alarm signalling system.

• Assignee: General Signal Corporation
• Patent Number(s): US 4499453
• OSTI ID: 5559136
• Resource Relation: Patent File Date: Filed date 21 Mar 1984; Other Information: PAT-APPL-591889
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
LIGHT SOURCES
POWER CONDITIONING CIRCUITS
RADIO EQUIPMENT
DIRECT CURRENT
ELECTRIC CABLES
ENERGY EFFICIENCY
POWER SUPPLIES
SIGNALS
CABLES
CONDUCTOR DEVICES
CURRENTS
EFFICIENCY
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
RADIATION SOURCES
420800* - Engineering- Electronic Circuits & Devices- (-1989)