Control system for a power supply
AssigneeIndiana University Research and Technology Corporation
InventorsJames P. Reilly, Noah P. Christian
Life of this patent
Estimating the term…
Abstract
A control system (12) for a power supply (14), such as a high voltage power supply, includes a control circuit (16) and a feedback circuit (18, 28, 30). The feedback circuit (18, 28, 30) is configured to produce a feedback signal indicative of the voltage of the power supply output. The control circuit (16) is configured to control the power supply (14) based on the feedback signal and a predetermined voltage value to maintain the output of the power supply (14) at about the predetermined voltage value. A portion of the feedback circuit (18, 28, 30) may be included in an isolation shield (88) to improve the accuracy of the feedback signal.
Claims30
A control system for a power supply, the control system comprising:
- a feedback circuit including a high impedance voltage reduction circuit configured to receive an output voltage from the power supply and produce a voltage reduction signal having a voltage less than the output voltage, the high impedance voltage reduction circuit isolating the voltage reduction signal from environmental effects in the vicinity of the control system;
- and
- a control circuit configured to receive the voltage reduction signal and produce a control signal based on the voltage reduction signal and a predetermined voltage value, the control circuit controlling the power supply via the control signal to maintain the output voltage at about the predetermined voltage value.
A method of controlling a high voltage power supply configured to produce an output voltage in response to a control signal, the method comprising:
- producing a voltage reduction signal, based on the output voltage, with a voltage reduction circuit, the voltage reduction signal having a voltage less than the output voltage;
- isolating the voltage reduction signal from environmental effects in the vicinity of the voltage reduction circuit;
- determining the control signal based on the voltage reduction signal and a predetermined voltage value;
- and
- maintaining the voltage output voltage at about the predetermined voltage value via the control signal.
A MALDI mass spectrometer system comprising:
- a MALDI mass spectrometer having a power input for receiving a power supply voltage;
- a power supply configured to produce the power supply voltage in response to a control signal;
- a feedback circuit configured to receive the power supply voltage from the power supply and produce a voltage reduction signal having a voltage less than the power supply voltage;
- and
- a control circuit configured to receive the voltage reduction signal and produce the control signal based on the voltage reduction signal and a predetermined voltage value, the control circuit controlling the power supply via the control signal to maintain the power supply voltage at about the predetermined voltage value.
A control circuit for controlling a power supply, the control circuit comprising:
- a feedback circuit configured to receive an output voltage from the power supply and produce a feedback signal indicative of the output voltage, at least a portion of the feedback circuit being positioned in an isolation shield;
- and
- a control circuit configured to receive the feedback signal and control the power supply to generate the output voltage based on the feedback signal and a predetermined voltage value.
Dependencies are inferred from the claim text.