US3909663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for regulating the operating parameters of an electron beam generator
Assignee: Leybold Heraeus Verwaltung GmbH
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Filing: 1974-05-16
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Granted: 1975-09-30
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Expires: 1994-05-16
Abstract
Abstract An arrangement for regulating the operating parameters of an electron beam generator in which the main cathode is indirectly heated by a directly-heated auxiliary cathode. A regulating circuit connected to the auxiliary cathode has three individual regulators connected in tandem for regulating the auxiliary cathode. Three separate signals corresponding to the accelerating voltage of the auxiliary cathode, the emission current of the auxiliary cathode, and the emission current of the main cathode are applied respectively to the inputs of the three individual regulators in feedback arrangement.
Inventors
- 👤 Friedrich Werner Thomas
- 👤 Gerhard Vock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:45
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/24; H01J37/241; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
An arrangement for regulating the operating parameters of an electron beam generator comprising, in combination, an electron emissive main cathode with emission current; an electron emissive auxiliary cathode with emission current for heating indirectly said main cathode, means for heating directly said auxiliary cathode; means for generating an accelerating voltage between said main cathode and said auxiliary cathode, voltage regulating means connected to said auxiliary cathode and having three single regulators connected in tandem for regulating the accelerating voltage between said auxiliary cathode and said main cathode; feedback means for feeding back to said regulating means a signal corresponding to the emission current of said main cathode, said three single regulators having applied to their respective inputs, one of three separate signals corresponding to the accelerating voltage of said auxiliary cathode, the emission current of said auxiliary cathode, and the emission current of said main cathode.
Claim 2
Dependent Claim
146 words
An arrangement for regulating the operating parameters of an electron beam generator comprising, in combination, an electron emissive main cathode with emission current; an electron emissive auxiliary cathode with emission current for heating indirectly said main cathode, means for heating directly said auxiliary cathode; means for generating an accelerating voltage between said main cathode and said auxiliary cathode, voltage regulating means connected to said auxiliary cathode and having three single regulators connected in tandem for regulating the accelerating voltage between said auxiliary cathode and said main cathode; feedback means for feeding back to said regulating means a signal corresponding to the emission current of said main cathode, said three single regulators having applied to their respective inputs, one of three separate signals corresponding to the accelerating voltage of said auxiliary cathode, the emission current of said auxiliary cathode, and the emission current of said main cathode.
Claim 3
Dependent Claim
65 words
The arrangement as defined in claim 1 including input means for applying a desired input signal to said regulating means; a mixing junction between said input means and said regulating means for receiving said signal corresponding to the emission current of said main cathode; and limiting means connected ahead of said mixing junction to limit the slope of the rise of said desired input signal.
Claim 4
Dependent Claim
17 words
The arrangement as defined in claim 1 wherein said regulating means is a source of energy supply.
Claim 5
Dependent Claim
44 words
The arrangement as defined in claim 1 including a source of compensating voltage connected to each input of said three singLe regulators and having a polarity opposite to the polarity of the respective feedback signal applied to the input of the respective single regulator.
Claim 6
Dependent Claim
15 words
The arrangement as defined in claim 4 including adjusting means for varying said compensating voltage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |