IT1031630B - Misuratore digitale del livello di una tensione elettrica - Google Patents
Misuratore digitale del livello di una tensione elettricaInfo
- Publication number
- IT1031630B IT1031630B IT20141/75A IT2014175A IT1031630B IT 1031630 B IT1031630 B IT 1031630B IT 20141/75 A IT20141/75 A IT 20141/75A IT 2014175 A IT2014175 A IT 2014175A IT 1031630 B IT1031630 B IT 1031630B
- Authority
- IT
- Italy
- Prior art keywords
- level
- electric voltage
- digital meter
- meter
- digital
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/255—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with counting of pulses during a period of time proportional to voltage or current, delivered by a pulse generator with fixed frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
- H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
- H03M1/182—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the reference levels of the analogue/digital converter
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Analogue/Digital Conversion (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742407968 DE2407968C2 (de) | 1974-02-19 | Digitaler Spannungspegelmesser |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1031630B true IT1031630B (it) | 1979-05-10 |
Family
ID=5907842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT20141/75A IT1031630B (it) | 1974-02-19 | 1975-02-11 | Misuratore digitale del livello di una tensione elettrica |
Country Status (4)
Country | Link |
---|---|
US (1) | US3999123A (it) |
FR (1) | FR2261532B1 (it) |
GB (1) | GB1487687A (it) |
IT (1) | IT1031630B (it) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936229B2 (ja) * | 1975-06-26 | 1984-09-03 | エプソン株式会社 | 基準電圧装置 |
US4077035A (en) * | 1976-05-10 | 1978-02-28 | International Business Machines Corporation | Two-stage weighted capacitor circuit for analog-to-digital and digital-to-analog converters |
US4087796A (en) * | 1976-10-21 | 1978-05-02 | Rockwell International Corporation | Analog-to-digital conversion apparatus |
US4160134A (en) * | 1977-08-25 | 1979-07-03 | International Telephone And Telegraph Corporation | Digital signal level measurement |
US4117722A (en) * | 1977-11-14 | 1978-10-03 | Honeywell Inc. | Measuring apparatus providing separate analog and digital outputs |
JPS5920860A (ja) * | 1982-07-28 | 1984-02-02 | Hitachi Ltd | 光伝送体による情報検知方法 |
US4605920A (en) * | 1983-03-02 | 1986-08-12 | Beckman Instruments, Inc. | Prescaling device and method |
DE3425212A1 (de) * | 1984-07-09 | 1986-01-16 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Fuellstandsanzeige |
JPH02202721A (ja) * | 1989-02-01 | 1990-08-10 | Sony Corp | 信号レベル検出回路 |
DE4034698A1 (de) * | 1990-10-31 | 1992-05-14 | Fraunhofer Ges Forschung | Spannungs-frequenz-wandler und widerstands-frequenz-wandler |
US6348798B1 (en) | 2000-12-05 | 2002-02-19 | Alpha Smart, Inc. | Analog to digital voltage measuring device |
US20110267068A1 (en) * | 2010-05-03 | 2011-11-03 | Jian Xu | Energy storage level indication circuit |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3566265A (en) * | 1968-11-18 | 1971-02-23 | Time Systems Corp | Compensated step ramp digital voltmeter |
-
1975
- 1975-02-06 GB GB5034/75A patent/GB1487687A/en not_active Expired
- 1975-02-11 IT IT20141/75A patent/IT1031630B/it active
- 1975-02-13 US US05/549,657 patent/US3999123A/en not_active Expired - Lifetime
- 1975-02-18 FR FR7504972A patent/FR2261532B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2407968A1 (it) | 1975-07-03 |
US3999123A (en) | 1976-12-21 |
GB1487687A (en) | 1977-10-05 |
FR2261532A1 (it) | 1975-09-12 |
FR2261532B1 (it) | 1979-10-19 |
DE2407968B1 (de) | 1975-07-03 |
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