JPH01180661U - - Google Patents
Info
- Publication number
- JPH01180661U JPH01180661U JP7183688U JP7183688U JPH01180661U JP H01180661 U JPH01180661 U JP H01180661U JP 7183688 U JP7183688 U JP 7183688U JP 7183688 U JP7183688 U JP 7183688U JP H01180661 U JPH01180661 U JP H01180661U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- synchronization
- rotation speed
- speed detection
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims 2
- 230000000630 rising effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図、第２図は本考案の一実施例回路図及び
その各部動作波形図である。図中Ｉは直流電源、
はパルス発生手段、は信号回路、は整形回
路、は周期検出回路、は倫理回路である。
FIGS. 1 and 2 are a circuit diagram of an embodiment of the present invention and operation waveform diagrams of each part thereof. I in the figure is a DC power supply,
is a pulse generating means, is a signal circuit, is a shaping circuit, is a period detection circuit, and is an ethical circuit.
Claims (1)
タイミングパルスを発生するパルス発生手段と、
前記第１タイミングパルスと同期して立上り又、
第２タイミングパルスに同期して立下る信号を発
生する信号回路と、前記信号回路の出力信号を整
形する整形回路と、前記整形回路の出力によりオ
ン、オフ動作する半導体スイツチ素子と、前記半
導体スイツチ素子のオフ時に充電されるコンデン
サと、前記コンデンサの電圧が所定値に達した時
回転数検知信号を送出する倫理回路を備えたこと
を特徴とする回転数検出回路。 a DC power source; a pulse generating means for generating first and second timing pulses each time the engine rotates;
rising in synchronization with the first timing pulse;
a signal circuit that generates a signal that falls in synchronization with a second timing pulse; a shaping circuit that shapes the output signal of the signal circuit; a semiconductor switch element that is turned on and off by the output of the shaping circuit; A rotation speed detection circuit comprising a capacitor that is charged when an element is off, and an ethical circuit that sends out a rotation speed detection signal when the voltage of the capacitor reaches a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7183688U JPH01180661U (en) | 1988-05-31 | 1988-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7183688U JPH01180661U (en) | 1988-05-31 | 1988-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01180661U true JPH01180661U (en) | 1989-12-26 |
Family
ID=31297025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7183688U Pending JPH01180661U (en) | 1988-05-31 | 1988-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01180661U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728913A (en) * | 1980-07-28 | 1982-02-16 | Shin Nippon Eng Kk | Mixing system of oil and water obtaining stabilized emulsion fuel |
| JPS61762A (en) * | 1984-06-13 | 1986-01-06 | Mitsubishi Electric Corp | Vehicle speed detector |
-
1988
- 1988-05-31 JP JP7183688U patent/JPH01180661U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728913A (en) * | 1980-07-28 | 1982-02-16 | Shin Nippon Eng Kk | Mixing system of oil and water obtaining stabilized emulsion fuel |
| JPS61762A (en) * | 1984-06-13 | 1986-01-06 | Mitsubishi Electric Corp | Vehicle speed detector |