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GB1277628A - Phase comparator - Google Patents

Phase comparator

Info

Publication number
GB1277628A
GB1277628A GB5017369A GB5017369A GB1277628A GB 1277628 A GB1277628 A GB 1277628A GB 5017369 A GB5017369 A GB 5017369A GB 5017369 A GB5017369 A GB 5017369A GB 1277628 A GB1277628 A GB 1277628A
Authority
GB
United Kingdom
Prior art keywords
input
gate
output
gates
phase comparator
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
GB5017369A
Inventor
Rolf Bjorklund
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1277628A publication Critical patent/GB1277628A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

1277628 Phase comparators ALLMANNA SVENSKA ELEKTRISKA AB 13 Oct 1969 [14 Oct 1968] 50173/69 Heading H3A A phase comparator comprises: first and second gates 12, 13 with one input 14, 16 of each connected to a respective input signal U or I and a second input 15, 17 connected to the output of the other; a third gate 20 having one input 21 connected to the output of the first gate 12 and the other input 22 connected to input 16 of the second gate 13; an integrator 25 connected to the output of gate 20; and a level switch 26 connected to the output of integrator 25 and arranged to operate when the phase difference between the two inputs passes a predetermined value. In the embodiment of Fig. 1, gates 12, 13 are NOR gates, gate 20 an AND gate, and an inverter 23 is included in the connection between input 16 and input 22. In an alternative embodiment, Fig. 3 (not shown), all three gates are NAND gates and the inverter (40) is included in the connection between the output of the first gate and the other input to the third gate.
GB5017369A 1968-10-14 1969-10-13 Phase comparator Expired GB1277628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1379768A SE324835B (en) 1968-10-14 1968-10-14

Publications (1)

Publication Number Publication Date
GB1277628A true GB1277628A (en) 1972-06-14

Family

ID=20297998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5017369A Expired GB1277628A (en) 1968-10-14 1969-10-13 Phase comparator

Country Status (5)

Country Link
CH (1) CH501231A (en)
DE (1) DE1951146A1 (en)
FR (1) FR2020616A1 (en)
GB (1) GB1277628A (en)
SE (1) SE324835B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045168A1 (en) * 1980-07-30 1982-02-03 John Marmaduke Dickson-Simpson Demountable vehicle body

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686576A (en) * 1970-12-18 1972-08-22 Ibm Parallel tone detector
JPS5752321A (en) * 1980-09-10 1982-03-27 Mitsubishi Electric Corp Phase discriminator
DE3634751A1 (en) * 1986-10-11 1988-04-14 Thomson Brandt Gmbh PHASE DISCRIMINATOR, ESPECIALLY FOR A PLL CIRCUIT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045168A1 (en) * 1980-07-30 1982-02-03 John Marmaduke Dickson-Simpson Demountable vehicle body

Also Published As

Publication number Publication date
FR2020616A1 (en) 1970-07-17
CH501231A (en) 1970-12-31
DE1951146A1 (en) 1970-11-19
SE324835B (en) 1970-06-15

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Legal Events

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