Regulated deuterium arc supply system
First Claim
Patent Images
1. A power supply system for a deuterium arc lamp comprising, in combination:
- a variable output switching voltage converter for generating a pulsed output voltage when energized from an external voltage source;
a voltage multiplier storage circuit driven from said output voltage for supplying starting voltage to the arc in said deuterium lamp;
a rectifier storage circuit driven from said output voltage for supplying running anode arc current to said lamp;
current sensor means coacting with said voltage converter for continuous feedback control of said output voltage in response to anode current level of said deuterium arc lamp; and
switching means for applying cathode heater current to said arc lamp coincidentally with the energization of said voltage converter from said external voltage source.
3 Assignments
0 Petitions
Accused Products
Abstract
An improved power supply system of smaller size and lower cost than prior art supplies is described for starting and maintaining the running of a deuterium arc lamp at a constant current level; by use of switching circuitry with solid-state components the necessity of transformers, relays and timing circuits has been obviated with a resultant major reduction in size, cost and cooling requirements of the supply; an improved starting sequence lengthens lamp cathode life.
-
Citations
15 Claims
-
1. A power supply system for a deuterium arc lamp comprising, in combination:
-
a variable output switching voltage converter for generating a pulsed output voltage when energized from an external voltage source; a voltage multiplier storage circuit driven from said output voltage for supplying starting voltage to the arc in said deuterium lamp; a rectifier storage circuit driven from said output voltage for supplying running anode arc current to said lamp; current sensor means coacting with said voltage converter for continuous feedback control of said output voltage in response to anode current level of said deuterium arc lamp; and switching means for applying cathode heater current to said arc lamp coincidentally with the energization of said voltage converter from said external voltage source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A power supply system for a deuterium arc lamp comprising, in combination:
-
a variable output switching voltage converter for generating a pulsed output voltage when energized from an external voltage source; a voltage multiplier storage circuit driven from said output voltage for supplying starting voltage to the arc in said deuterium lamp; a rectifier storage circuit driven from said output voltage for supplying running anode arc current to said lamp; current sensor means coacting with said voltage converter for continuous feedback control of said output voltage in response to anode current level of said deuterium arc lamp; and switching means for applying cathode heater current to said arc lamp coincidentally with the energization of said voltage source and coacting with said sensor means to terminate flow of cathode heater curent when said anode current attains substantially normal value.
-
-
13. A method of starting and operating a deuterium arc lamp of the type having an anode, cathode and cathode heater means in an analytical instrument comprising:
-
applying a starting voltage to the arc lamp, providing cathode heater current to bring the cathode to arcing heat no earlier than the application of starting voltage so as to start the lamp, and providing running anode arc current to said lamp upon starting and terminating cathode heater current. - View Dependent Claims (14, 15)
-
Specification