JPS6418060A - Tachometer - Google Patents
TachometerInfo
- 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
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.
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)
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 |
-
1987
- 1987-07-14 JP JP17567987A patent/JPS6418060A/en active Pending
Patent Citations (1)
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 |
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