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US 5,604,352 AGranted
Apparatus comprising voltage multiplication components
AssigneeRaychem Corporation
InventorMarlin N. Schuetz
Life of this patent
Estimating the term…
Abstract
Apparatus for irradiating a substrate is compact, transportable, rugged, high powered, and highly efficient. It includes an improved high voltage inductor (1-230), an improved power transfer apparatus (230-294), an improved voltage multiplication apparatus (500-575), an improved auxiliary power supply (600-619) for the voltage multiplication apparatus, improved accessibility self-shielding (700), and improved methods for radiation processing of solid or liquid materials.
Claims22
Apparatus for irradiating a substrate comprising:
- (i) a vacuum chamber including a transmission window which is located at a first end of said vacuum chamber;
- (ii) a particle beam generator within said vacuum chamber;
- and
- (iii) a particle beam accelerator, within said vacuum chamber, which accelerates and directs particles from said generator towards and through said transmission window, said apparatus comprising a voltage multiplication apparatus having:
- (i) a first and a second metallic electrode, adapted to be connected to a source of AC power,
- (ii) a ground connection and a high voltage DC terminal,
- (iii) a plurality of solid state rectifier units each having an anode and cathode,
- said units being positioned between said electrodes and being series-connected anode to cathode between said ground connection and said high voltage DC terminal, and
- (iv) a capacitor plate connected at each one of the electrical junctions thereby formed between said rectifier units;
- a) each capacitor plate being independently positioned at its own predetermined spacing from one of said first electrode or said second electrode, and in combination with said electrode forming a capacitor having a predetermined capacitance, to form a plurality of capacitor modules each independently comprising at least one capacitor,
- b) said predetermined spacings increasing for successive said capacitor modules,
- c) said capacitor plates being adapted to capacitively couple an AC potential of substantially equal amplitude across the capacitors via the capacitance between said capacitor plates and said electrodes, and
- d) the capacitance between a capacitor plate and an electrode being similar to an average value of capacitance between said capacitor plates and electrodes.
10 more elements
Electrical apparatus comprising:
- (i) a first and a second metallic electrode, adapted to be connected to a source of AC power,
- (ii) a ground connection and a high voltage DC terminal,
- (iii) a plurality of solid state rectifier units each having an anode and cathode,
- said units being positioned between said electrodes and being series-connected anode to cathode between said ground connection and said high voltage DC terminal,
- (iv) a capacitor plate connected at each one of the electrical junctions thereby formed between said rectifier units;
- a) each capacitor plate being independently positioned at its own predetermined spacing from one of said first electrode or said second electrode, and in combination with that electrode forming a capacitor having a predetermined capacitance, to form a plurality of capacitor modules each independently comprising at least one capacitor,
- b) said predetermined spacings increasing for successive said capacitor modules,
- c) said capacitor plates being adapted to capacitively couple an AC potential of substantially equal amplitude across the capacitors via the capacitance between said capacitor plates and said electrodes, and
- d) the capacitance between a capacitor plate and an electrode being similar to an average value of capacitance between said capacitor plates and electrodes.
6 more elements
A method of operating a voltage multiplication apparatus which includes:
- (i) a firt and a second metallic electrode,
- (ii) a source of AC power connected to the electrodes,
- (iii) a plurality of solid state rectifier units each having an anode and cathode,
- the units being positioned between the electrodes and being series-connected anode to cathode between ground and a high voltage DC terminal, and
- (iv) a capacitor plate connected at each one of the electrical junctions thereby formed between the rectifier units;
- a) each capacitor plate being independently positioned at its own predetermined spacing from one of the first electrode or the second electrode, and in combination with such electrode forming a capacitor having a predetermined capacitance, whereby a plurality of capacitor modules is formed each independently comprising at least one capacitor,
- b) the capacitor plates capacitively coupling an AC potential of substantially equal amplitude across the capacitors via the capacitance between the capacitor plates and the electrodes,
- c) the predetermined spacings increasing for successive capacitor modules, and
- d) the capacitance between a capacitor plate and an electrode being similar to an average value of capacitance between the capacitor plates and electrodes;
- the method comprising:
- applying AC electrical power to the first and second electrodes such that the electrical field gradient thereby formed between a capacitor plate and the corresponding electrode is similar to an average value of the electrical field gradient between the capacitor plates and electrodes.
8 more elements
Dependencies are inferred from the claim text.