JPS6418060A - Tachometer - Google Patents

Tachometer

Info

Publication number
JPS6418060A
JPS6418060A JP17567987A JP17567987A JPS6418060A JP S6418060 A JPS6418060 A JP S6418060A JP 17567987 A JP17567987 A JP 17567987A JP 17567987 A JP17567987 A JP 17567987A JP S6418060 A JPS6418060 A JP S6418060A
Authority
JP
Japan
Prior art keywords
signal
voltage
square wave
proportional
circuit
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.)
Pending
Application number
JP17567987A
Other languages
Japanese (ja)
Inventor
Nobuhisa Senda
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
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 Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP17567987A priority Critical patent/JPS6418060A/en
Publication of JPS6418060A publication Critical patent/JPS6418060A/en
Pending legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To obtain a highly accurate tachometer easy to adjust, by providing a frequency-voltage conversion section so arranged that a square wave signal proportional to revolutions is inputted to be turned to a triangular wave with an integration circuit, which is sampled and held by a trigger pulse synchronizing the square wave signal to obtain a DC voltage proportional to the square wave signal. CONSTITUTION:A signal P to be outputted from a synchronous signal generation circuit 220 of a frequency-voltage conversion section 200 is a square wave and synchronous with an input signal and controls an FETQ5 to cut a square wave signal K inputted by a half cycle. The signal K is integrated with an integration circuit 210a to be turned to a triangular wave signal T. In the circuit 210b, the FETQ6 is controlled by a trigger pulse D from a synchronous signal generation circuit 220 synchronizing the signal K to sample and hold the signal T with a capacitor C6 and the signal T is outputted as DC voltage S proportional to an inverse number of the signal K. The voltage S is introduced into an inverse number conversion circuit 230 to be turned to a DC voltage S<-1> proportional to the signal K by inverse conversion and outputted to a follow-up section 3. This facilitates the adjustment of an indicator 4 thereby indicating revolutions at a high accuracy.
JP17567987A 1987-07-14 1987-07-14 Tachometer Pending JPS6418060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17567987A JPS6418060A (en) 1987-07-14 1987-07-14 Tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17567987A JPS6418060A (en) 1987-07-14 1987-07-14 Tachometer

Publications (1)

Publication Number Publication Date
JPS6418060A true JPS6418060A (en) 1989-01-20

Family

ID=16000338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17567987A Pending JPS6418060A (en) 1987-07-14 1987-07-14 Tachometer

Country Status (1)

Country Link
JP (1) JPS6418060A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179165A (en) * 1984-09-27 1986-04-22 Fuji Electric Co Ltd Analog speed detecting method using rotary encoder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179165A (en) * 1984-09-27 1986-04-22 Fuji Electric Co Ltd Analog speed detecting method using rotary encoder

Similar Documents

Publication Publication Date Title
JPS56100363A (en) Detecting apparatus of adjusting speed
JPS5623534A (en) Throttle opening detector for air-fuel ratio controller
JPS6418060A (en) Tachometer
JPS57131085A (en) Ultrasonic wave measuring system
JPS5544934A (en) Top dead point detector for engine
JPS5518756A (en) Positioning system
JPS5444818A (en) Measuring instrument for pickup dimensions
SU703766A1 (en) Device for measuring the amplitude of single pulses
SU873407A1 (en) Device for converting voltage to digital code
JPS5748664A (en) Pulse frequency detector
JPS5675963A (en) Control method of ignition lead angle
SU928237A1 (en) Device for measuring voltage instantaneous values
JPS6471213A (en) Frequency-voltage conversion circuit
JPS57142800A (en) Method and device for measuring stopping performance of press slide in press machine
JPS55105432A (en) Frequency-voltage converter
SU661381A2 (en) Frequrncy sensor
SU1739308A1 (en) Meter of peak power of video pulses
SU1691782A1 (en) First order aperiodic member time constant measuring instrument
SU1100582A1 (en) Pulse parameter meter
JPS5587956A (en) Revolution speed detection circuit
JPS56130664A (en) Frequency measuring system
JPS5772006A (en) Device for detecting angle
GB1492548A (en) Apparatus for the measurement of the specific surface of pulverised materials
JPS56108974A (en) Doppler radar apparatus
JPS6474088A (en) Low speed detection system of motor