JPS6121973U - Tachometer - Google Patents

Tachometer

Info

Publication number
JPS6121973U
JPS6121973U JP9229585U JP9229585U JPS6121973U JP S6121973 U JPS6121973 U JP S6121973U JP 9229585 U JP9229585 U JP 9229585U JP 9229585 U JP9229585 U JP 9229585U JP S6121973 U JPS6121973 U JP S6121973U
Authority
JP
Japan
Prior art keywords
rotation speed
tachometer
frequency
gate pulse
pulse
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
JP9229585U
Other languages
Japanese (ja)
Inventor
俊博 森
Original Assignee
ジエコ−株式会社
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 ジエコ−株式会社 filed Critical ジエコ−株式会社
Priority to JP9229585U priority Critical patent/JPS6121973U/en
Publication of JPS6121973U publication Critical patent/JPS6121973U/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図は本考案の一実施例を示すブロック図である。 １・・・回転数検出器、２・・・ゲートパルス発生回路
、３・・・ゲート回路、４・・・周波数てい倍回路、５
・・・カウンタ、６・・・表示回路、７・・・表示器、
８・・・検出回路、９・・・ゲートパルス変更回路。The figure is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Rotation speed detector, 2... Gate pulse generation circuit, 3... Gate circuit, 4... Frequency multiplier circuit, 5
...Counter, 6...Display circuit, 7...Display device,
8...Detection circuit, 9...Gate pulse change circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ゲートパルスで定まる単位計数時間においてエンジンの
回転数に比例した周波数のパルス信号をカウンタで計数
し、その計数値によりエンジンの回転数を表示するタコ
メータにおいて、エンジンの回転数に対応した上記カウ
ンタの計数値または表示信号により回転数が所定回転数
以上であることを検出する検出回路と、エンジンの回転
数が所定回転数以上の時に上記ゲートパルスの時間幅を
短縮変更するゲートパルス変更回路と、エンジンの回転
数が所定回転数以上の時にゲートパルス時間幅の短縮比
に比例して上記パルス信号の周波数をてい倍して上記カ
ウンタに入力する周波数てい倍回路とを設けたことを特
徴とするタコメータ。In a tachometer, a counter counts pulse signals with a frequency proportional to the engine rotation speed in a unit counting time determined by a gate pulse, and displays the engine rotation speed based on the counted value. a detection circuit that detects whether the engine speed is equal to or higher than a predetermined rotation speed based on a numerical value or a display signal; a gate pulse changing circuit that shortens or shortens the time width of the gate pulse when the engine rotation speed is equal to or higher than the predetermined rotation speed; A tachometer characterized by being provided with a frequency multiplier circuit which multiplies the frequency of the pulse signal in proportion to the shortening ratio of the gate pulse time width when the rotation speed of the tachometer is equal to or higher than a predetermined rotation speed, and inputs the frequency of the pulse signal to the counter. .
JP9229585U 1985-06-20 1985-06-20 Tachometer Pending JPS6121973U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9229585U JPS6121973U (en) 1985-06-20 1985-06-20 Tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9229585U JPS6121973U (en) 1985-06-20 1985-06-20 Tachometer

Publications (1)

Publication Number Publication Date
JPS6121973U true JPS6121973U (en) 1986-02-08

Family

ID=30648966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9229585U Pending JPS6121973U (en) 1985-06-20 1985-06-20 Tachometer

Country Status (1)

Country Link
JP (1) JPS6121973U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04117906U (en) * 1991-04-04 1992-10-22 アアルピイ東プラ株式会社 Mounting mechanism

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424076A (en) * 1977-07-26 1979-02-23 Fuji Electric Co Ltd Detecting method of rotating speed

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424076A (en) * 1977-07-26 1979-02-23 Fuji Electric Co Ltd Detecting method of rotating speed

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04117906U (en) * 1991-04-04 1992-10-22 アアルピイ東プラ株式会社 Mounting mechanism

Similar Documents

Publication Publication Date Title
JPS60124153U (en) Data signal reading device
JPS6121973U (en) Tachometer
JPS6444725U (en)
JPS59189794U (en) Electronic tape counter device
JPS5862454U (en) Cassette type display device
JPS5811339U (en) counter circuit
JPS6027363U (en) Vehicle speed display device
JPS6053090U (en) time signal clock
JPS6245789U (en)
JPS58126998U (en) Refueling device
JPS6193883U (en)
JPS588122U (en) Display device of parent-child type totalizing meter
JPS6097331U (en) economic driving monitor
JPS59146710U (en) Angle measuring device
JPS6042922U (en) Flow velocity/flow measuring device
JPS6039151U (en) 2D coordinate counting device
JPS5897733U (en) tape recorder
JPS60183993U (en) Tape position display device
JPS5865694U (en) Time data display device
JPS59183606U (en) Rotor travel amount detection device
JPS6060499U (en) Fuzz detection device
JPS59118590U (en) Ink level display device for automatic drafting machine
JPS58127374U (en) Synchronous monitoring device in ultrasonic sounder
JPS60192059U (en) Vehicle driving time alarm
JPS609656U (en) Type carrier speed fluctuation detection device