GB1026012A - Improvements in or relating to frequency meters,speed indicators and like impulse rate indicators - Google Patents

Improvements in or relating to frequency meters,speed indicators and like impulse rate indicators

Info

Publication number
GB1026012A
GB1026012A GB27034/61A GB2703461A GB1026012A GB 1026012 A GB1026012 A GB 1026012A GB 27034/61 A GB27034/61 A GB 27034/61A GB 2703461 A GB2703461 A GB 2703461A GB 1026012 A GB1026012 A GB 1026012A
Authority
GB
United Kingdom
Prior art keywords
indicators
relating
bridge
capacitor
impulse rate
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
GB27034/61A
Inventor
Philip John Death
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.)
RECORD ELECTRICAL CO Ltd
Original Assignee
RECORD ELECTRICAL CO Ltd
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 RECORD ELECTRICAL CO Ltd filed Critical RECORD ELECTRICAL CO Ltd
Priority to GB27034/61A priority Critical patent/GB1026012A/en
Publication of GB1026012A publication Critical patent/GB1026012A/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
    • 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

Landscapes

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

Abstract

1,026,012. Frequency detectors. RECORD ELECTRICAL CO. Ltd. Oct. 15, 1962 [July 26, 1961], No. 27034/61. Heading H3A. A ring rectifier bridge is connected in series with a capacitor and a transistor switch, rendered conductive by a rectangular waveform formed by limiting the A.C. input whose frequency is to be measured. Charging and discharging current to and from the capacitor passes through a meter in the other bridge diagonal, in each case in the same direction. A resistor shunting both the bridge and capacitor passes the discharge current. A Zener diode stabilizes the operating voltage.
GB27034/61A 1961-07-26 1961-07-26 Improvements in or relating to frequency meters,speed indicators and like impulse rate indicators Expired GB1026012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB27034/61A GB1026012A (en) 1961-07-26 1961-07-26 Improvements in or relating to frequency meters,speed indicators and like impulse rate indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27034/61A GB1026012A (en) 1961-07-26 1961-07-26 Improvements in or relating to frequency meters,speed indicators and like impulse rate indicators

Publications (1)

Publication Number Publication Date
GB1026012A true GB1026012A (en) 1966-04-14

Family

ID=10253092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27034/61A Expired GB1026012A (en) 1961-07-26 1961-07-26 Improvements in or relating to frequency meters,speed indicators and like impulse rate indicators

Country Status (1)

Country Link
GB (1) GB1026012A (en)

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