Gas discharge lamp power supply
AssigneeFrance/Scott Fetzer Company
InventorsWilliam Hopkins, Anthony Banks, Alan Smith, Louis Pickvet, Robert Towe, Charles Schlemm
Life of this patent
Estimating the term…
Abstract
A gas discharge lamp power supply having a base, a pair of opposed side walls extending from the base, and opposed first and second end walls extending from the base between the opposed side walls. The first end wall has a sloped wall extending angularly between the side walls, and two input terminals are mounted on the sloped wall. In another embodiment, the power supply has a control with a nonvolatile memory for storing an error code in response to a detected fault condition, thereby permitting the error code to be displayed upon power being removed from and then, subsequently reapplied.
Claims50
A power supply for use with a gas discharge lamp comprising:
- a base;
- a pair of opposed side walls extending from the base;
- opposed first and second end walls extending from the base between the opposed side walls, a first end wall comprising
- a bottom wall extending from the base between the side walls, and
- a sloped wall extending angularly from the side wall between the end walls;
- a cover extending between the side walls and the end walls,
- the cover, the side walls and the end walls being fastened together to form an inaccessible enclosure;
- at least two lower voltage input terminals mounted on the sloped wall;
- and
- at least two higher voltage output terminals connectable to the gas discharge lamp.
A power supply for use with a gas discharge lamp comprising:
- a base;
- a pair of opposed side walls extending from the base;
- opposed first and second end walls, each of the end walls comprising
- a bottom wall extending from the base between the side walls, and
- a sloped wall extending angularly from the bottom wall between the end walls;
- a cover extending between the side walls and the end walls;
- at least two input terminals mounted on a sloped wall of a first end wall;
- and
- at least two output terminals, a first output terminal being mounted on a sloped wall of a second end wall.
A gas discharge lamp power supply comprising:
- a transformer having a primary winding and a secondary winding;
- input terminals connectable to the primary winding and adapted to be connected to a source of electrical power;
- output terminals connected to the secondary winding and adapted to be connected to a gas discharge lamp;
- a fault detection circuit providing an error signal in response to detecting a fault condition;
- a control comprising a nonvolatile memory, the control storing an error code in the nonvolatile memory in response to the error signal, and
- an error indicator connected to the control and being activated by the control in response to the error signal.
A method for diagnosing a presence of a fault condition in a gas discharge lamp power supply, the power supply having
- a transformer having a primary winding and a secondary winding,
- input terminals connectable to a source of electrical power,
- output terminals connected to the secondary winding and connectable to the gas discharge lamp,
- a fault detection circuit connected to the secondary winding,
- a control connected between an input terminal and the primary winding, and
- an error indicator connected to the control,
- the method comprising:
- connecting a source of electrical power to the input terminals of the power supply and the primary winding of the transformer;
- monitoring an operation of the power supply with the fault detection circuit;
- generating an error signal with the fault detection circuit in response to detecting a fault condition in the power supply;
- storing an error code in a nonvolatile memory in the control in response to the error signal;
- and
- activating the error indicator in response to the error code.
A power supply for use with a gas discharge lamp comprising:
- a housing comprising
- a base, and
- opposed first and second end wails extending from the base, a first end wall comprising a sloped wall extending obliquely with respect to the base;
- a transformer located within the housing and comprising a primary winding and a secondary winding;
- input terminals mounted on the sloped wall and connectable to the primary winding;
- output terminals mounted on the housing, connected to the secondary winding and adapted to be connected to a gas discharge lamp;
- a fault detection circuit located within the housing and providing an error signal in response to detecting a fault condition;
- a control located within the housing and comprising a nonvolatile memory, the control storing an error code in the nonvolatile memory in response to the error signal;
- and
- an error indicator connected to the control and being activated by the control in response to the error signal.
Dependencies are inferred from the claim text.