Fluorescent lamp ballast

Patent · Tue Aug 25 04:00:00 EDT 1987

OSTI ID:6098148

Ureche, A

An electronic ballast is described having at least a first and second terminal for engaging the filaments of at least one fluorescent lamp which requires a breakdown voltage to ignite the lamp and a maintaining voltage for maintaining ionization therewithin, the electronic ballast comprising: a direct current voltage source; a transistor; a transformer having a primary winding separated into a first winding, a second winding, a third winding, and a fourth winding; the first winding connected between the voltage source and the first terminal; the second winding connected between the two terminals; the third winding connected between the second terminal and to both the transistor and to ground; the fourth winding connected between ground and the transistor; the lamp being parallel to the second winding when the lamp filaments engages the ballast terminals.

• Assignee: NOV; NOV-87-078372; EDB-87-169827
• Patent Number(s): US 4689524
• OSTI ID: 6098148
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
BALLASTS
BREAKDOWN
BUILDINGS
CONDUCTOR DEVICES
CONNECTORS
CURRENTS
DIRECT CURRENT
ELECTRIC CONTACTS
ELECTRIC CURRENTS
ELECTRIC IMPEDANCE
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
FILAMENTS
FLUORESCENT LAMPS
IGNITION
IMPEDANCE
IONIZATION
LIGHT BULBS
SEMICONDUCTOR DEVICES
TRANSFORMERS
TRANSISTORS