JP2503624B2 - Fan rotation speed control circuit - Google Patents
Fan rotation speed control circuitInfo
- Publication number
- JP2503624B2 JP2503624B2 JP2197889A JP2197889A JP2503624B2 JP 2503624 B2 JP2503624 B2 JP 2503624B2 JP 2197889 A JP2197889 A JP 2197889A JP 2197889 A JP2197889 A JP 2197889A JP 2503624 B2 JP2503624 B2 JP 2503624B2
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- fan
- control circuit
- speed control
- option
- 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.)
- Expired - Lifetime
Links
Landscapes
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子装置等のフアンによる冷却において電子
装置内の構成によつてフアンの回転速度を制御するフア
ン回転速度制御回路に関するものである。Description: TECHNICAL FIELD The present invention relates to a fan rotation speed control circuit that controls the rotation speed of a fan according to the configuration inside the electronic device when the electronic device is cooled by the fan.
〔従来の技術〕 従来、種々の構成状態をもつ電子装置等のフアンによ
る冷却は、当該電子装置が最大の構成状態において、電
子装置内各部の温度上昇が、決められた温度上昇以下に
なるようにフアンの回転速度（冷却能力）を決めている
ため、最大構成になつていない構成でもフアンの回転速
度は常にほぼ一定に設定されていた。[Prior Art] Conventionally, cooling of an electronic device or the like having various configuration states by a fan is performed so that the temperature rise of each part in the electronic device is equal to or less than a predetermined temperature rise in the maximum configuration state of the electronic device. Since the fan's rotation speed (cooling capacity) is determined, the fan's rotation speed was always set to be almost constant even in a configuration that did not reach the maximum configuration.
第２図は従来のフアン回転速度制御回路の構成を示す
回路図である。同図において、電子装置１は、電源２か
らコネクタ３を介して基本論理部４に直流電力が供給さ
れ、オプシヨン部５にはコネクタ６を介して直流電力が
供給されて冷却用フアン７によつて冷却されていた。FIG. 2 is a circuit diagram showing a configuration of a conventional fan rotation speed control circuit. In the figure, in the electronic device 1, DC power is supplied from the power supply 2 to the basic logic unit 4 via the connector 3, and DC power is supplied to the option unit 5 via the connector 6 so that the cooling fan 7 can operate. It was cooled down.
しかしながら、このように構成されるフアン回転速度
制御回路による冷却方法によると、フアン７の回転速度
は、オプシヨン部５の有無に関係なく、同一回転速度で
あり、オプシヨン部５がない構成ではフアン７の回転速
度が不必要に速く回転音がうるさくなるという問題があ
つた。However, according to the cooling method by the fan rotation speed control circuit configured as described above, the rotation speed of the fan 7 is the same regardless of the presence or absence of the option portion 5, and the fan 7 is not provided in the configuration without the option portion 5. However, there was a problem that the rotation speed was unnecessarily high and the rotation noise became loud.
本発明のフアン回転速度制御回路は、温度上昇制限が
厳しいオプシヨン部の電源供給用コネクタに当該オプシ
ヨン部が接続されたことを検知できるインターフエース
を設けたものである。The fan rotation speed control circuit of the present invention is provided with an interface capable of detecting that the option unit is connected to the power supply connector of the option unit whose temperature rise is severely restricted.
本発明においては、オプシヨン部の接続，非接続によ
つて冷却用フアンの回転速度が制御される。In the present invention, the rotation speed of the cooling fan is controlled by connecting or disconnecting the option section.
次に本発明について図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図は本発明の一実施例によるフアン回転速度制御
回路の回路図であり、第２図と同一構成部分には同一番
号を付してある。同図において、電圧により回転速度が
変化するフアン７の一方の端子は、直流電圧VAに接続さ
れ、その他方の端子は抵抗８を介してグランドに接続さ
れ、さらに抵抗値０Ωを含む抵抗９を介してオプシヨン
部５への電源供給用コネクタ６′に接続されている。温
度上昇制限の厳しい例えばハードデイスク等や消費電力
の大きいオプシヨン部５の電源供給用コネクタ６′には
同図に示すようにグランド端子が設けられ、このオプシ
ヨン部５が接続されない場合はフアン７には抵抗８によ
り分割された電圧が印加されるので、フアン７は遅い回
転速度となり、該オプシヨン部５が接続された場合、フ
アン７には抵抗８と抵抗９との並列抵抗により分割され
た電圧が印加され、このオプシヨン部５を冷却するのに
必要な回転速度でフアン７が回転することになる。FIG. 1 is a circuit diagram of a fan rotation speed control circuit according to an embodiment of the present invention, and the same components as those in FIG. 2 are designated by the same reference numerals. In the figure, one terminal of the fan 7 whose rotational speed changes according to the voltage is connected to the DC voltage V A , the other terminal is connected to the ground through the resistor 8, and the resistor 9 including the resistance value 0Ω. It is connected to a connector 6'for supplying power to the option section 5 via. As shown in the figure, the power supply connector 6'of the option section 5 having a strict temperature rise restriction such as a hard disk or the one with large power consumption is provided with a ground terminal, and if the option section 5 is not connected, the fan 7 is provided. Since the voltage divided by the resistor 8 is applied, the fan 7 has a low rotation speed, and when the option unit 5 is connected, the fan 7 receives the voltage divided by the parallel resistance of the resistor 8 and the resistor 9. When applied, the fan 7 rotates at the rotation speed necessary to cool the option portion 5.
以上説明したように本発明は、温度上昇制限の厳しい
オプシヨン部，消費電力の大きいオプシヨン部等の電源
供給用コネクタに該オプシヨン部が接続されたことを検
知できるインターフエースを設け、そのインターフエー
スの有無により、冷却用フアンに印加される電圧を変
え、フアンの回転速度を変化させることにより、電子装
置の内部構成に対応した冷却とすることができる。この
ため該オプシヨンのない構成においてはフアンの騒音を
下げることができるという極めて優れた効果が得られ
る。As described above, the present invention provides an interface capable of detecting that the option section is connected to a power supply connector such as an option section with severe temperature rise restriction and an option section with large power consumption. By changing the voltage applied to the cooling fan depending on the presence / absence and changing the rotation speed of the fan, it is possible to achieve cooling corresponding to the internal configuration of the electronic device. Therefore, in the configuration without the option, the extremely excellent effect that the noise of the fan can be reduced can be obtained.
第１図は本発明のフアン回転速度制御回路の一実施例を
示す回路図、第２図は従来の一例を示す回路図である。 １……電子装置、２……電源、３……電源供給用コネク
タ、４……基本論理部、５……オプシヨン部、６′……
電源供給用コネクタ、７……フアン、8,9……抵抗。FIG. 1 is a circuit diagram showing an embodiment of a fan rotation speed control circuit of the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional art. 1 ... Electronic device, 2 ... Power supply, 3 ... Power supply connector, 4 ... Basic logic section, 5 ... Option section, 6 '...
Power supply connector, 7 ... Juan, 8, 9 ... Resistance.
Claims (1)
れる電源供給用コネクタを有し、前記オプシヨン部の増
設により内部構成が変化する電子装置のフアン回転速度
制御回路において、前記電源供給用コネクタに前記オプ
シヨン部の接続，非接続を検知するインターフエースを
設け、前記オプシヨン部の接続，非接続によつて前記冷
却用フアンの回転速度を制御することを特徴としたフア
ン回転速度制御回路。1. A fan rotation speed control circuit for an electronic device, which has a power supply connector to which a cooling fan and an option part are connected, and whose internal configuration changes due to the addition of the option part. A fan rotation speed control circuit comprising an interface for detecting connection / disconnection of the option unit, and controlling the rotation speed of the cooling fan by connecting / disconnecting the option unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2197889A JP2503624B2 (en) | 1989-01-31 | 1989-01-31 | Fan rotation speed control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2197889A JP2503624B2 (en) | 1989-01-31 | 1989-01-31 | Fan rotation speed control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02203182A JPH02203182A (en) | 1990-08-13 |
| JP2503624B2 true JP2503624B2 (en) | 1996-06-05 |
Family
ID=12070115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2197889A Expired - Lifetime JP2503624B2 (en) | 1989-01-31 | 1989-01-31 | Fan rotation speed control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503624B2 (en) |
-
1989
- 1989-01-31 JP JP2197889A patent/JP2503624B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02203182A (en) | 1990-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5574667A (en) | Temperature independent fan-error correction circuit | |
| JP3209547B2 (en) | Linear variable cooling DC fan control circuit | |
| US4856078A (en) | DC fan speed control | |
| US5731674A (en) | Motor with variable edge steepness | |
| JP2000134974A (en) | Control circuit for brushless motor assembly | |
| US6310453B1 (en) | Drive circuit for a speed adjustable fan | |
| JP2503624B2 (en) | Fan rotation speed control circuit | |
| JP2006067786A (en) | Control circuit for rotating speed of fan motor, and voltage-regulating module thereof | |
| JPH02223354A (en) | Fan motor of automobile blower | |
| US6297603B1 (en) | Circuit and method to avoid high current spikes in stator windings | |
| JP3091975U (en) | Control circuit for controlling the rotation speed of DC motor | |
| JP2689166B2 (en) | Motor control method | |
| JPH03238515A (en) | Pos terminal equipment | |
| JPH10178794A (en) | Fan motor drive circuit | |
| KR20020096054A (en) | Low noise computer fan control method | |
| JP3246976B2 (en) | Electronic equipment cooling device | |
| JPH05227784A (en) | Motor drive circuit | |
| JP2550621Y2 (en) | Juan | |
| JPS5910954Y2 (en) | DC motor brake device | |
| JPH07175530A (en) | Cooling fan device | |
| JPH0223119Y2 (en) | ||
| US20060074575A1 (en) | Control circuit of a DC fan motor for start with high voltage and high rotational speed with low voltage | |
| JPH071890Y2 (en) | Video equipment with AV control signal output terminal | |
| JPH0223408A (en) | Rotation control system for cooling fan | |
| JPH0213769A (en) | Cooling device for electronic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080402 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20090402 |
|
| EXPY | Cancellation because of completion of term |