GB1367586A - Analogue digital converter - Google Patents

Analogue digital converter

Info

Publication number
GB1367586A
GB1367586A GB5903572A GB5903572A GB1367586A GB 1367586 A GB1367586 A GB 1367586A GB 5903572 A GB5903572 A GB 5903572A GB 5903572 A GB5903572 A GB 5903572A GB 1367586 A GB1367586 A GB 1367586A
Authority
GB
United Kingdom
Prior art keywords
voltage
switch
point
integrator
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5903572A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRADING AS DATRON ELECTRONIC P
Bizerba SE and Co KG
Original Assignee
TRADING AS DATRON ELECTRONIC P
Bizerba Werke Wilhelm Kraut GmbH and KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19712164227 external-priority patent/DE2164227C3/en
Application filed by TRADING AS DATRON ELECTRONIC P, Bizerba Werke Wilhelm Kraut GmbH and KG filed Critical TRADING AS DATRON ELECTRONIC P
Publication of GB1367586A publication Critical patent/GB1367586A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10Calibration or testing
    • H03M1/1009Calibration

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

1367586 A/D converter W KRAUT [trading as BIZERBA-WERKE WILHELM KRAUT KG] E SCHULTE and O PICHL [trading as DATRON - ELECTRONIC PICHL & SCHULTE KG] 21 Dec 1972 [23 Dec 1971] 59035/72 Heading G4H A digital voltmeter comprises a constant negative voltage source 5 supplying an integrator 1, a reference voltage source 4, and a comparator 3 for comparing the output voltage of the integrator at point C with a voltage at point A which may either be the reference voltage or an unknown voltage U x , the output of the comparator being input to a control unit 8 which controls a counter 5 and a store 7 and the several switches shown. In operation, the output of the integrator is first pushed to a positive maximum by closure of switch S5 and the counter is set at +n max . Switch S4 is then closed together with S2, and switch S5 is opened and the voltage at C is compared at 3 with a voltage (- U ref ), and when the voltage at point B equals zero the controller 8 causes pulses from a generator 6 to decrement counter 5 and also closes switch S3 and opens S2 whereby the unknown voltage U x is compared with the ramp output of the integrator. If U x is <0, equality at point B occurs when the voltage at point C is >0, and this equality causes the controller 8 to cause the count at 5 to be stored at 7, which count is a measure of the voltage U x . If U x > 0 the integrator voltage falls to zero as does the count at 5, and at this point the controller causes, by means of a switch S8, the counter to count upwards. The integrator output at C continues to increase in a negative sense and when the voltage at B is equal to zero the stored 7 is activated as above, the position of the switch 8 being indicative of the sign of U x . The counter is counted up to + n max again and the voltage at C is allowed to fall to a minimum which should be equal to +U ref . At this point the switch S1 is closed and the comparison made. If any deviation is detected the constant voltage value at 2 is amended via switches S6, S7 to correct this.
GB5903572A 1971-12-23 1972-12-21 Analogue digital converter Expired GB1367586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712164227 DE2164227C3 (en) 1971-12-23 Drift-free analog-digital converter

Publications (1)

Publication Number Publication Date
GB1367586A true GB1367586A (en) 1974-09-18

Family

ID=5829045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5903572A Expired GB1367586A (en) 1971-12-23 1972-12-21 Analogue digital converter

Country Status (8)

Country Link
JP (1) JPS5752733B2 (en)
AT (1) AT331058B (en)
BE (1) BE793256A (en)
CH (1) CH558990A (en)
FR (1) FR2164930B1 (en)
GB (1) GB1367586A (en)
IT (1) IT972670B (en)
NL (1) NL7217470A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111142491A (en) * 2019-12-31 2020-05-12 无锡军创工程技术有限公司 Smart energy management platform system based on Internet of things and cloud computing technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111142491A (en) * 2019-12-31 2020-05-12 无锡军创工程技术有限公司 Smart energy management platform system based on Internet of things and cloud computing technology

Also Published As

Publication number Publication date
IT972670B (en) 1974-05-31
CH558990A (en) 1975-02-14
DE2164227B2 (en) 1976-05-13
AT331058B (en) 1976-08-10
FR2164930A1 (en) 1973-08-03
JPS5752733B2 (en) 1982-11-09
FR2164930B1 (en) 1980-10-17
JPS50122158A (en) 1975-09-25
BE793256A (en) 1973-04-16
DE2164227A1 (en) 1973-07-05
ATA1090772A (en) 1975-10-15
NL7217470A (en) 1973-06-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee