Apparatus for supplying stabilized power to a load having voltage-current characteristics exhibiting partial negative resistance
AssigneeKabushiki Kaisha Toshiba
InventorToshihiro Onodera
Life of this patent
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Abstract
An electric power supply apparatus comprises a traveling-wave tube 15 exhibiting partial negative-resistance characteristics and a voltage stabilizing circuit for controlling a voltage control element 12 using an error amplifier 16 and a switch and for supplying stable power to the traveling-wave tube 15. In the apparatus, whether a traveling-wave tube 15 is in positive-resistance operation or negative-resistance operation is detected. In the negative-resistance operation, the control using the error amplifier 16 and the switch S1 is rendered ineffective.
Claims9
An electric power supply apparatus comprising:
- a load exhibiting partial negative-resistance characteristics;
- a power supply for supplying power to the load;
- a voltage control element for controlling voltage of the power supplied to the load from the power supply;
- detecting means for detecting whether voltage-current characteristics of the load exhibit a state of negative resistance operation;
- and
- voltage stabilizing means including a negative feedback circuit controlling the voltage control element in accordance with variations in load voltage applied to the load, wherein control of the negative feedback circuit is rendered ineffective in a state of negative-resistance operation detected by the detecting means.
An electric power supply apparatus comprising:
- a load exhibiting partial negative-resistance characteristics;
- a power supply for supplying power to the load;
- a voltage control element for controlling voltage of the power supplied to the load from the power supply;
- detecting means for detecting whether voltage-current characteristics of the load exhibit a state of negative-resistance operation or a state of positive-resistance operation;
- voltage stabilizing means, including a negative feedback circuit for controlling the voltage control element in accordance with variations in load voltage applied to the load and a feedforward circuit for controlling the voltage control element in accordance with variations in the voltage applied to the voltage control element, for controlling the voltage control element using the negative feedback circuit in a state of positive-resistance operation detected by the detecting means and for controlling the voltage control element using the feedforward circuit in a state of negative-resistance operation detected by the detecting means.
Dependencies are inferred from the claim text.