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US 8,477,816 B2Granted
System and method to regulate high current radiation sources
AssigneeLumenis Ltd.
InventorOfer Weizmann
Life of this patent
Estimating the term…
Abstract
Disclosed is a high current radiation system. The system includes a high current radiation source to generate radiation and an analog circuit to generate, based, at least in part, on an input signal representative of the present current level delivered to the high current radiation source and a user-controlled input representative of a desired current level, an output signal to control a current level to be delivered to the high current radiation source. The system further includes a current driver to control the current delivered to the high current radiation source based, at least in part, on the output signal of the analog circuit.
Claims15
A high current radiation system, the system comprising:
- a high current radiation source to generate radiation having an output spectrum based, at least in part, on level of current delivered to the radiation source;
- an analog circuit to receive an input signal representative of present current level delivered to the high current radiation source and another input representative of a desired current level, the analog circuit further configured to generate, based, at least in part, on the input signal representative of the present current level delivered to the high current radiation source and the other input representative of the desired current level, an output signal to control the level of the current delivered to the high current radiation source;
- and
- a current driver to control the current delivered to the high current radiation source based, at least in part, on the output signal of the analog circuit;
- wherein the analog circuit comprises:
- an analog comparator implemented using at least one operational amplifier;
- said analog comparator configured to:
- generate a logical high signal when a voltage level of the other input exceeds a voltage level of the input signal representative of the present current level delivered to the high current radiation source;
- and
- generate a logical low signal when the voltage level of the other input is below the voltage level of the input signal representative of the present current level delivered to the high current radiation source.
7 more elements
A method to regulate level of current delivered to a high-current radiation source, the method comprising:
- receiving, at an analog circuit, an input signal representative of present current level delivered to the high current radiation source and another input representative of a desired current level;
- generating, using the analog circuit, an output signal to control the level of the current delivered to the high current radiation source based on the input signal representative of the present current level delivered to the high current radiation source and the other input representative of the desired current;
- and
- controlling the current delivered to the high current radiation source based, at least in part, on the output signal of the analog circuit, the radiation source generating radiation having an output spectrum based, at least in part, on level of current delivered to the radiation source;
- wherein generating the output signal comprises using a comparator to:
- generate a logical high signal when a voltage level of the other input exceeds a voltage level of the input signal representative of the present current level delivered to the high current radiation source;
- and
- generate a logical low signal when the voltage level of the other input is below the voltage level of the input signal representative of the present current level delivered to the high current radiation source.
5 more elements
A method to regulate level of current delivered to a high-current radiation source, the method comprising:
- receiving, at an analog circuit, an input signal representative of present current level delivered to the high current radiation source and another input representative of a desired current level;
- generating, using the analog circuit, an output signal to control the level of the current delivered to the high current radiation source based on the input signal representative of the present current level delivered to the high current radiation source and the other input representative of the desired current;
- and
- controlling the current delivered to the high current radiation source based, at least in part, on the output signal of the analog circuit, the radiation source generating radiation having an output spectrum based, at least in part, on level of current delivered to the radiation source;
- wherein controlling the current comprises:
- actuating a power transistor to control the current flow from a power source to the high current radiation source using the generated output signal such that the current flow from the power source is enabled when the actuating signal is a logical high and the current flow from the power source is disabled when the actuating signal is a logical low.
3 more elements
Dependencies are inferred from the claim text.