Filament circuit resistance adjusting apparatus technical field
AssigneeGE Medical Systems Global Technology Company, LLC
InventorsThomas D. Schaefer, Lloyd Wang, Gregory Steinlage, Earl Warden
Life of this patent
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Abstract
A filament circuit resistance adjusting apparatus (36), for a filament circuit (38) having a filament (50) with a first resistance is provided. The filament circuit resistance adjusting apparatus (36) includes a first resistor (70), which has a second resistance and is electrically coupled to the filament (50). The first resistor (70) adjusts the resistance of the filament circuit (38). A method for adjusting the resistance of the filament (50) is also provided.
Claims21
A filament circuit resistance adjusting apparatus, for a filament circuit having a filament with a first resistance, said apparatus comprising a first nonhard-wired and removable resistor electrically coupled to the filament and having a second resistance, said first nonhard-wired and removable resistor adjusting system perceived resistance of the filament.
A filament resistance adjusting apparatus, for a first filament circuit having a first filament with a first resistance, said apparatus comprising:
- a circuit board electrically coupled to the first filament;
- and
- a first nonhard-wired and removable resistor electricaily coupled to said circuit board and the first filament and having a second resistance, said first nonhard-wired and removable resistor is in series with the first filament and adjusting the resistance of the first filament circuit.
An imaging tube assembly having a filament circuit comprising:
- a cathode comprising a filament;
- and
- a filament circuit resistance adjusting apparatus comprising;
- a circuit board electrically coupled to the filament;
- and
- a first nonhard-wired and removable resistor electrically coupled to said circuit board and the filament and having a second resistance, said first nonhard-wired and removable resistor adjusting system perceived resistance of the filament.
A method of adjusting resistance of a filament circuit having a filament with a first resistance, said method comprising:
- directly and electrically coupling a first nonhard-wired and removable resistance device, having a second resistance, to the filament such that system perceived resistance of the filament is altered;
- unplugging said first nonhard-wired and removable resistance device;
- and
- plugging in a second nonhard-wired and removable resistance device in replacement of said first nonhard-wired and removable resistance device.
Dependencies are inferred from the claim text.