JPH0365967U - - Google Patents
Info
- Publication number
- JPH0365967U JPH0365967U JP12730389U JP12730389U JPH0365967U JP H0365967 U JPH0365967 U JP H0365967U JP 12730389 U JP12730389 U JP 12730389U JP 12730389 U JP12730389 U JP 12730389U JP H0365967 U JPH0365967 U JP H0365967U
- Authority
- JP
- Japan
- Prior art keywords
- fan
- conversion circuit
- voltage conversion
- rotation
- pulse signal
- 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
- Control Of Positive-Displacement Air Blowers (AREA)
Description
第１図は本考案のフアン回転検出回路を表わす
回路図、第２図はフアンが正常動作している際の
本考案回路の動作を表わすタイムチヤート、第３
図はフアンが停止した際の本考案回路の動作を表
わすタイムチヤート、第４図は従来のフアン回転
検出回路の表わす回路図、第５図はフアンからの
パルス信号である。
１……電圧変換器、２……シリアル・パラレル
変換器、３……クロツク発生器、Ｔｒ１……トラ
ンジスタ、Ｇ１……ゲート、Ｆ１，Ｆ２……ワン
シヨツト回路、Ｖｒ……定電圧発生器、ＯＰ１…
…オペアンプ、Ｓ１……電源。
Figure 1 is a circuit diagram showing the fan rotation detection circuit of the present invention, Figure 2 is a time chart showing the operation of the circuit of the present invention when the fan is operating normally, and Figure 3 is a time chart showing the operation of the circuit of the present invention when the fan is operating normally.
The figure is a time chart showing the operation of the circuit of the present invention when the fan stops, FIG. 4 is a circuit diagram showing a conventional fan rotation detection circuit, and FIG. 5 is a pulse signal from the fan. 1... Voltage converter, 2... Serial/parallel converter, 3... Clock generator, Tr1... Transistor, G1... Gate, F1, F2... One shot circuit, Vr... Constant voltage generator, OP1 …
...Operational amplifier, S1...Power supply.
Claims (1)
わすパルス信号を入力してその電圧の大きさを変
換する電圧変換回路と、この電圧変換回路で変換
されたパルス信号を入力してフアン回転データま
たはフアン停止データを出力するシリアル・パラ
レル変換器とからなるフアン回転検出回路。 A voltage conversion circuit inputs a pulse signal representing rotation from a rotation detector installed in the fan and converts the magnitude of the voltage, and a voltage conversion circuit inputs the pulse signal converted by this voltage conversion circuit to generate fan rotation data or A fan rotation detection circuit consisting of a serial/parallel converter that outputs fan stop data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12730389U JPH0365967U (en) | 1989-10-31 | 1989-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12730389U JPH0365967U (en) | 1989-10-31 | 1989-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365967U true JPH0365967U (en) | 1991-06-26 |
Family
ID=31675063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12730389U Pending JPH0365967U (en) | 1989-10-31 | 1989-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365967U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56110054A (en) * | 1980-02-05 | 1981-09-01 | Toshiba Corp | Detecting device for speed of rotary machine |
-
1989
- 1989-10-31 JP JP12730389U patent/JPH0365967U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56110054A (en) * | 1980-02-05 | 1981-09-01 | Toshiba Corp | Detecting device for speed of rotary machine |
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