Fluorescent lamp ballast

Patent · Tue Mar 31 04:00:00 EST 1987

OSTI ID:6171446

Boyd, G D

This patent describes an electronic ballast unit for a fluorescent lamp comprising: a circuit assembly having a pair of voltage input terminal and a first inductor and a capacitor in series relationship with each other to form a series resonant circuit. The circuit is adapted to be coupled to a fluorescent lamp to provide a starting voltage for the lamp; and a second inductor connected in shunt relationship to the first inductor and connected to the other input terminal. There is a core on which the first inductor and the second inductor are mounted. The core inductively couples the inductors with each other and are shaped to reduce core losses to minimize the increase of temperature of the core; the core is of a generally H-shaped configuration, and means of opposite ends of the H-shaped core to complete the magnetic flux path for each inductor, respectively.

• Assignee: Energy Technologies Corp., Grants Pass, OR
• Patent Number(s): US 4654563
• OSTI ID: 6171446
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
BALLASTS
BUILDINGS
CAPACITORS
CONDUCTOR DEVICES
CONNECTORS
CONTROL
ELECTRIC COILS
ELECTRIC CONTACTS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENERGY LOSSES
EQUIPMENT
FLUORESCENT LAMPS
LIGHT BULBS
LOSSES
MAGNETIC FLUX
POWER LOSSES
SOLENOIDS
TEMPERATURE CONTROL