GB1380140A - Electronic measuring circuits - Google Patents

Electronic measuring circuits

Info

Publication number
GB1380140A
GB1380140A GB1272572A GB1272572A GB1380140A GB 1380140 A GB1380140 A GB 1380140A GB 1272572 A GB1272572 A GB 1272572A GB 1272572 A GB1272572 A GB 1272572A GB 1380140 A GB1380140 A GB 1380140A
Authority
GB
United Kingdom
Prior art keywords
input
frequency
operational amplifier
half cycle
signal
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
GB1272572A
Other languages
English (en)
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.)
Bull HN Information Systems Italia SpA
Bull HN Information Systems Inc
Original Assignee
Honeywell Information Systems Italia SpA
Honeywell Information Systems Inc
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
Application filed by Honeywell Information Systems Italia SpA, Honeywell Information Systems Inc filed Critical Honeywell Information Systems Italia SpA
Publication of GB1380140A publication Critical patent/GB1380140A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • G01R23/09—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage using analogue integrators, e.g. capacitors establishing a mean value by balance of input signals and defined discharge signals or leakage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/06—Demodulating pulses which have been modulated with a continuously-variable signal of frequency- or rate-modulated pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB1272572A 1971-06-07 1972-03-17 Electronic measuring circuits Expired GB1380140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15032471A 1971-06-07 1971-06-07

Publications (1)

Publication Number Publication Date
GB1380140A true GB1380140A (en) 1975-01-08

Family

ID=22534041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1272572A Expired GB1380140A (en) 1971-06-07 1972-03-17 Electronic measuring circuits

Country Status (5)

Country Link
JP (1) JPS52156572U (enExample)
CA (1) CA954189A (enExample)
DE (1) DE2227741A1 (enExample)
FR (1) FR2140397B1 (enExample)
GB (1) GB1380140A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036955A1 (de) * 1979-10-10 1981-05-21 Elin-Union AG für elektrische Industrie, Wien Anordnung zur ermittlung der resonanzfrequenz von lastgefuehrten umrichtern mit schwingkreis

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719505A1 (de) * 1987-06-11 1988-12-22 Telefunken Electronic Gmbh Freuquenz/spannungswandler
CN104166045B (zh) * 2013-05-15 2016-12-28 海洋王（东莞）照明科技有限公司 一种交流电源频率检测装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535658A (en) * 1967-06-27 1970-10-20 Webb James E Frequency to analog converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036955A1 (de) * 1979-10-10 1981-05-21 Elin-Union AG für elektrische Industrie, Wien Anordnung zur ermittlung der resonanzfrequenz von lastgefuehrten umrichtern mit schwingkreis

Also Published As

Publication number Publication date
JPS52156572U (enExample) 1977-11-28
FR2140397A1 (enExample) 1973-01-19
FR2140397B1 (enExample) 1976-01-16
DE2227741A1 (de) 1972-12-14
CA954189A (en) 1974-09-03

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees