ES8305132A1 - Frequency converter particularly for vehicle tachometers - Google Patents

Frequency converter particularly for vehicle tachometers

Info

Publication number
ES8305132A1
ES8305132A1 ES513237A ES513237A ES8305132A1 ES 8305132 A1 ES8305132 A1 ES 8305132A1 ES 513237 A ES513237 A ES 513237A ES 513237 A ES513237 A ES 513237A ES 8305132 A1 ES8305132 A1 ES 8305132A1
Authority
ES
Spain
Prior art keywords
frequency converter
converter particularly
tachometers
vehicle
diode
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
ES513237A
Other languages
Spanish (es)
Other versions
ES513237A0 (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.)
Moto Meter AG
Original Assignee
Moto Meter AG
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 Moto Meter AG filed Critical Moto Meter AG
Publication of ES513237A0 publication Critical patent/ES513237A0/en
Publication of ES8305132A1 publication Critical patent/ES8305132A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
    • H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

The invention relates to a frequency converter having a phase locked loop which includes a low pass filter (R1, R2, c). In order to speed the response when there is a drop in input frequency, the series arm of the filter (R1) is shunted by a series connected resistor (R3) and diode (D1) which reduce the time constant when the diode becomes conductive.
ES513237A 1981-07-10 1982-06-18 Frequency converter particularly for vehicle tachometers Expired ES8305132A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813127267 DE3127267A1 (en) 1981-07-10 1981-07-10 "DIGITAL FREQUENCY CONVERTER ARRANGEMENT, IN PARTICULAR FOR VEHICLE TACHOMETERS"

Publications (2)

Publication Number Publication Date
ES513237A0 ES513237A0 (en) 1983-03-16
ES8305132A1 true ES8305132A1 (en) 1983-03-16

Family

ID=6136590

Family Applications (1)

Application Number Title Priority Date Filing Date
ES513237A Expired ES8305132A1 (en) 1981-07-10 1982-06-18 Frequency converter particularly for vehicle tachometers

Country Status (4)

Country Link
DE (1) DE3127267A1 (en)
ES (1) ES8305132A1 (en)
GB (1) GB2101431B (en)
IT (1) IT1151239B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61501883A (en) * 1983-06-27 1986-08-28 ザ　コモンウエルス　オブ　オ−ストラリア squelch circuit
DE3910347A1 (en) * 1989-03-30 1990-10-04 Rexroth Mannesmann Gmbh Incremental position (displacement) measuring and acceleration measuring system, in particular for a hydraulic rotary or linear drive
FI91578C (en) * 1992-06-05 1994-07-11 Nokia Mobile Phones Ltd Coupling for a phase-locked loop

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912651A (en) * 1954-03-29 1959-11-10 Gen Electric Automatic frequency control
GB853960A (en) * 1956-02-24 1960-11-16 Emi Ltd Improvements in or relating to phase control circuits
DE1766244A1 (en) * 1968-04-24 1971-06-24 Licentia Gmbh Device for monitoring a frequency
DE2701575C2 (en) * 1977-01-15 1985-12-19 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen Frequency converter for speed and distance counters

Also Published As

Publication number Publication date
IT1151239B (en) 1986-12-17
ES513237A0 (en) 1983-03-16
IT8221476A0 (en) 1982-05-25
DE3127267A1 (en) 1983-01-27
GB2101431B (en) 1985-06-12
GB2101431A (en) 1983-01-12

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