US3590250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and pulse-width-modulated data link using infrared light to control and monitor power supply for modulator for high-energy linear accelerator
Assignee: United States Atomic Energy Commission
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Filing: 1969-06-06
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Granted: 1971-06-29
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Expires: 1989-06-06
Abstract
Abstract Method and apparatus for transmitting information across a highvoltage interface by light pulse-width modulation for remotely monitoring, controlling and/or energizing high-voltage apparatus.
Inventors
- 👤 Richard L Witkover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:34
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/22; H; H04; H04B; H04B10/00; H04B10/50; H04B10/516; H04B10/524
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
152 words
Valve means for controlling electrical energy for energizing and controlling a high-energy capacitor bank that energizes a modulator and a high-energy linear accelerator seriatim, comprising: a. low-voltage means at a first location having a high frequency, infrared, pulse-width-modulated source including a light pipe for producing and transmitting pulse-width-modulated command signals at high frequency to a second location across a high-voltage, potential difference gradient, insulating gap, the pulse width duration of said command signals containing control information; and b. means responsive to said command signals and being connected to said valve means at said second location for effecting the transmission of said electrical energy to said capacitor bank in accordance with the pulse widths of said command signals for energizing said modulator to produce radiofrequency signals corresponding to the pulse-width duration of said command signals whereby said high-energy linear accelerator is energized and controlled across said gap in accordance with said control information.
Claim 2
Dependent Claim
152 words
Valve means for controlling electrical energy for energizing and controlling a high-energy capacitor bank that energizes a modulator and a high-energy linear accelerator seriatim, comprising: a. low-voltage means at a first location having a high frequency, infrared, pulse-width-modulated source including a light pipe for producing and transmitting pulse-width-modulated command signals at high frequency to a second location across a high-voltage, potential difference gradient, insulating gap, the pulse width duration of said command signals containing control information; and b. means responsive to said command signals and being connected to said valve means at said second location for effecting the transmission of said electrical energy to said capacitor bank in accordance with the pulse widths of said command signals for energizing said modulator to produce radiofrequency signals corresponding to the pulse-width duration of said command signals whereby said high-energy linear accelerator is energized and controlled across said gap in accordance with said control information.
Claim 3
Dependent Claim
36 words
The invention of claim 1 having means for manually controlling the pulse-width modulation of said infrared source for controlling the pulse width of said command signals for the controlled transmission of information by said command signals.
Claim 4
Dependent Claim
38 words
The invention of claim 1 having current level computer means for controlling the pulse-width modulation of said infrared source for controlling the pulse width of said command signals for the controlled transmission of information by said command signals.
Claim 5
Dependent Claim
73 words
The invention of claim 3 in which said current level computer means is responsive to the voltage at the start of said recharge of said capacitor bank and a desired voltage and time for producing an error signal for controlling said low-voltage means for adjusting the pulse width of said command signals to a desired level for reducing said error signal to zero thereby to control the information transmitted by said command signals.
Claim 6
Dependent Claim
39 words
The invention of claim 1 in which said low-voltage means has an analog-to-pulse-width converter responsive to analog input signals for controlling the pulse width of said command signals to a desired level corresponding to predetermined analog amplitude input levels.
Claim 7
Dependent Claim
52 words
The invention of claim 1 in which said means responsive to said command signals has a pulse-width-to-analog amplitude converter for producing analog amplitude output signals for controlling said valve means for controlling the amplitude of said charging and recharging of said capacitor bank from said electrical energy source through said valve means.
Claim 8
Dependent Claim
100 words
The invention of claim 1 in which said high frequency, infrared, incoherent, pulse-width-modulated source is responsive to analog amplitude input information for producing light pulses whose pulse width corresponds to said analog amplitude input information for transmission by said light pipe and receipt by said means responsive to said command signals for conversion thereby into analog outPut signals corresponding to the analog amplitude of said input information for controlling said valve means for transmitting energy from said electrical energy source for said charging and recharging of said capacitor bank an amount corresponding to the amplitude of said analog input information.
Claim 9
Dependent Claim
147 words
The invention of claim 1 in which said infrared source, comprises a light-emitting diode having an analog-pulse-width converter for producing a light pulse output whose pulse width corresponds to analog amplitude input information signals transmitted to and received by said analog-to-pulse-width converter for the efficient transmission of said light pulses by said light pipe substantially independently of the variation in input amplitude to pulse power amplitude output characteristic of said diodes, and said means responsive to said command signals, comprises photodiode detectors having a pulse-width-to-analog amplitude converter, sample and hold means, and a buffer amplifier, for efficiently producing and transmitting bias signals for controlling the output of said valve means, which comprises a charge control tube, for accurately transmitting energy from said electrical energy to said capacitor bank corresponding to said analog amplitude input information for selectively maintaining and varying the RF input to said linear accelerator.
Claim 10
Dependent Claim
51 words
The invention of claim 1 in which said low-voltage means has input means for said infrared source means for monitoring and transmitting information in either direction across said high-voltage gradient interface selectively corresponding to amplitude, pulse duration, reference level and voltage, bias and current, for selectively controlling and monitoring the same.
References Cited (Backward Citations)
US3343096A
Cited
US3497616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |