High DC voltage generator
AssigneeHitachi, Ltd.
InventorKoji Iwata
Life of this patent
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Abstract
A resistor is provided in parallel with a first coil. By suspending the supply of a DC current to the first coil while the DC current is flowing through the first coil, a high DC voltage is generated across the resistor and the high DC voltage is applied to a second coil to allow a fast-rise current to flow therethrough. Reverse current blocking means is provided between the first and second coils to prevent a DC current from flowing back via the first coil when the second coil is supplied with a DC current. Currents flowing through the first and second coils can be controlled independently.
Claims6
A high DC voltage generator comprising a first coil, a first DC current supply means for supplying said first coil with a DC current, a resistor connected in parallel with said first coil, a switching means for shutting off the DC current of said first coil while the DC current supplied to said first coil is flowing therethrough, a second coil supplied with a high voltage which is generated when said switching means has made a shut-off action, a second DC current supply means for supplying said second coil with another DC current after the high voltage has been applied to said second coil, and a reverse current blocking means provided between said first coil and second coil for preventing the DC current supplied by said second DC supply means from flowing through said first coil.
Dependencies are inferred from the claim text.