Patent US3250990A successfully refreshed from Google Patents.
US3250990A
Expired / Lapsed
US
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Instrument for measuring transient characteristics
Assignee: E H RES LAB Inc
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Filing: 1961-01-23
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Granted: 1966-05-10
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 John C Hubbs
- 👤 Paul E Goodale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/26; G01R31/2607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
AN INSTRUMENT FOR MEASURING TRANSIENT CHARACTERISTICS OF AN ELECTRONIC COMPONENT COMPRISING A PULSE GENERATOR CONNECTED TO DRIVE SAID COMPONENT; AND AT LEAST ONE INDEPENDENT CHANNEL FOR MEASURING THE TIME INTERVAL BETWEEN TWO PREDETERMINED VALUES OF A TRANSIENT FUNCTION OF SAID COMPONENT INCLUDING A FIRST VALUE SENSING DISCRIMINATOR CONNECTED TO SAID PULSE GENERATOR AND PRODUCING AN OUTPUT AT ONE PREDETERMINED VALUE OF SAID TRANSIENT FUNCTION; MEANS FOR FORMING THE OUTPUT OF SAID FIRST DISCRIMINATOR INTO A FAST RISING PULSE OF LONG DURATION INCLUDING A PULSE AMPLIFIER, A MULTIVIBRATOR TRIGGERD IN ONE DIRECTION BY THE OUTPUT OF SAID PULSE AMPLIFIER; AN SAID FOR COMBINING THE OUTPUT OF SAID PULSE AMPLIFIER AND SAID MULTIVIBRATOR; A SECOND VALVE SENSING DISCRIMINATOR CONNECTED TO SAID COMPONENT AND PRODUCING AN OUTPUT AT THE OTHER PREDETERMINED VALUE OF SAID TRANSIENT FUNCTION; GATE MEANS ACTUATED BY THE OUTPUT OF SAID ADDER AND INHIBITED BY THE OUTPUT OF SAID SECOND DISCRIMINATOR FOR PRODUCING A SERIES OF PULSES HAVING A PULSE WIDTH EQUAL TO SAID TIME INTERVAL; SAID MULTIVIBRATOR CONNECTED TO SAID SECOND DIS CRIMINATOR AND TRIGGERED IN THE OTHER DIRECTION BY THE OUTPUT OF THE SECOND DISCRIMINATOR; AND MEANS FOR INTEGRATING SAID PULSES TO PRODUCE AN INSTRUMENT OUTPUT SIGNAL PROPORTIONAL TO THE AVERAGE WIDTH OF SAID PULSES.
Claim 2
Dependent Claim
207 words
AN INSTRUMENT FOR MEASURING TRANSIENT CHARACTERISTICS OF AN ELECTRONIC COMPONENT COMPRISING A PULSE GENERATOR CONNECTED TO DRIVE SAID COMPONENT; AND AT LEAST ONE INDEPENDENT CHANNEL FOR MEASURING THE TIME INTERVAL BETWEEN TWO PREDETERMINED VALUES OF A TRANSIENT FUNCTION OF SAID COMPONENT INCLUDING A FIRST VALUE SENSING DISCRIMINATOR CONNECTED TO SAID PULSE GENERATOR AND PRODUCING AN OUTPUT AT ONE PREDETERMINED VALUE OF SAID TRANSIENT FUNCTION; MEANS FOR FORMING THE OUTPUT OF SAID FIRST DISCRIMINATOR INTO A FAST RISING PULSE OF LONG DURATION INCLUDING A PULSE AMPLIFIER, A MULTIVIBRATOR TRIGGERD IN ONE DIRECTION BY THE OUTPUT OF SAID PULSE AMPLIFIER; AN SAID FOR COMBINING THE OUTPUT OF SAID PULSE AMPLIFIER AND SAID MULTIVIBRATOR; A SECOND VALVE SENSING DISCRIMINATOR CONNECTED TO SAID COMPONENT AND PRODUCING AN OUTPUT AT THE OTHER PREDETERMINED VALUE OF SAID TRANSIENT FUNCTION; GATE MEANS ACTUATED BY THE OUTPUT OF SAID ADDER AND INHIBITED BY THE OUTPUT OF SAID SECOND DISCRIMINATOR FOR PRODUCING A SERIES OF PULSES HAVING A PULSE WIDTH EQUAL TO SAID TIME INTERVAL; SAID MULTIVIBRATOR CONNECTED TO SAID SECOND DIS CRIMINATOR AND TRIGGERED IN THE OTHER DIRECTION BY THE OUTPUT OF THE SECOND DISCRIMINATOR; AND MEANS FOR INTEGRATING SAID PULSES TO PRODUCE AN INSTRUMENT OUTPUT SIGNAL PROPORTIONAL TO THE AVERAGE WIDTH OF SAID PULSES.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |