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US4339712A
Expired / Lapsed
US
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Method and system for measuring width and amplitude of current pulse
Assignee: Boeing Co
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Filing: 1980-05-01
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Granted: 1982-07-13
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Expires: 2000-05-01
Abstract
Abstract A shunt is disposed in the current path of a device, e.g. a magnetic particle machine and an input voltage from the shunt is amplified and coupled to: a peak-hold circuit for developing a digital amperage readout; and, a pulse comparator circuit operative with clock, clock gate and counter circuits for developing pulse length readout.
Inventors
- 👤 William O. Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:13
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/02; G01R19/00; G01R19/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
198 words
A system for measuring and indicating width and amplitude of input signal current pulses comprising in combination: a shunt; means for amplifying the input signal voltage across said shunt; a pulse comparator circuit responsive to said amplified input signal voltage; counter circuit means; clock gate circuit means coupled between said pulse comparator circuit and said counter circuit means; amperage readout circuit means including a display for indicating the amplitude of said input signal current pulses; a peak hold circuit coupled between said means for amplifying the input signal voltage across said shunt and said amperage readout circuit means; pulse length display circuit means coupled to said counter circuit means, said pulse length display circuit means including a display for indicating the pulse length of said input signal current pulses; reset switching means coupled to said counter circuit means for clearing said counter circuit means and resetting said display for indicating the pulse length of said input signal current pulses; said peak hold circuit including a holding capacitor; and said reset switching means further coupled to said peak hold circuit for discharging said holding capacitor and resetting said display for indicating the amplitude of said input signal current pulses.
Claim 2
Independent Claim
198 words
A system for measuring and indicating width and amplitude of input signal current pulses comprising in combination: a shunt; means for amplifying the input signal voltage across said shunt; a pulse comparator circuit responsive to said amplified input signal voltage; counter circuit means; clock gate circuit means coupled between said pulse comparator circuit and said counter circuit means; amperage readout circuit means including a display for indicating the amplitude of said input signal current pulses; a peak hold circuit coupled between said means for amplifying the input signal voltage across said shunt and said amperage readout circuit means; pulse length display circuit means coupled to said counter circuit means, said pulse length display circuit means including a display for indicating the pulse length of said input signal current pulses; reset switching means coupled to said counter circuit means for clearing said counter circuit means and resetting said display for indicating the pulse length of said input signal current pulses; said peak hold circuit including a holding capacitor; and said reset switching means further coupled to said peak hold circuit for discharging said holding capacitor and resetting said display for indicating the amplitude of said input signal current pulses.
Claim 3
Dependent Claim
18 words
The invention according to claim 1 wherein said pulse comparator circuit means includes adjustable trigger level control means.
Claim 4
Dependent Claim
34 words
The invention according to claim 1 wherein said counter circuit means includes first, second, and third counters, said first counter comprising divide by six counter, and said second and third counters comprise decade counters.
References Cited (Backward Citations)
US2984787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |