JPS6430698U - - Google Patents
Info
- Publication number
- JPS6430698U JPS6430698U JP1987123154U JP12315487U JPS6430698U JP S6430698 U JPS6430698 U JP S6430698U JP 1987123154 U JP1987123154 U JP 1987123154U JP 12315487 U JP12315487 U JP 12315487U JP S6430698 U JPS6430698 U JP S6430698U
- Authority
- JP
- Japan
- Prior art keywords
- fan motor
- power supply
- supply current
- voltage
- control system
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Control Of Direct Current Motors (AREA)
Description
第１図は本考案に従つて構成された直流フアン
・モータ駆動回路の望ましい一実施例の概略構成
図、第２図は従来における直流フアン・モータ駆
動回路の代表的一例の概略構成図、である。
図中、１は直流電源、２は電源電流制御用トラ
ンジスタ、４，５は平滑回路、６は駆動トランジ
スタ、７は抵抗、７１，７２は分割された抵抗、
８は比較器、９，１０は分圧回路、１１は引き出
し端子、１２はフアン・モータ、である。
FIG. 1 is a schematic diagram of a preferred embodiment of a DC fan motor drive circuit constructed according to the present invention, and FIG. 2 is a schematic diagram of a typical example of a conventional DC fan motor drive circuit. be. In the figure, 1 is a DC power supply, 2 is a power supply current control transistor, 4 and 5 are smoothing circuits, 6 is a drive transistor, 7 is a resistor, 71 and 72 are divided resistors,
8 is a comparator, 9 and 10 are voltage dividing circuits, 11 is an output terminal, and 12 is a fan motor.
Claims (1)
の両端電圧を検出し、該検出電圧があらかじめ設
定されている設定電圧に対して誤差を生じた場合
、上記電源電流線路に直列に挿入された電源電流
制御用トランジスタを制御して該直流フアン・モ
ータに与えられる電源電流を制御し、もつて該直
流フアン・モータの実際の回転数を上記設定電圧
に対応する設定回転数に極力近い値に維持させる
べく制御する帰還制御系付きの直流フアン・モー
タ駆動回路であつて； 上記直流フアン・モータの両端が短絡された場
合に導通するダイオードを有し、該ダイオードが
導通したとき上記帰還制御系に作用して電源電流
制御用トランジスタを強制的にオフさせる回路を
設けたこと； を特徴とする直流フアン・モータ駆動回路。[Claims for Utility Model Registration] When the voltage across the DC fan motor that rotates in response to power supply current is detected, and if the detected voltage deviates from the preset voltage, the above power supply current line The power supply current control transistor inserted in series with the DC fan motor is controlled to control the power supply current applied to the DC fan motor, thereby changing the actual rotation speed of the DC fan motor to the set rotation speed corresponding to the set voltage. A DC fan motor drive circuit with a feedback control system that controls the DC fan motor to maintain a value as close as possible to a value as close as possible to the DC fan motor; A DC fan/motor drive circuit comprising: a circuit that acts on the feedback control system to forcibly turn off the power supply current control transistor when the above feedback control system occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987123154U JPS6430698U (en) | 1987-08-13 | 1987-08-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987123154U JPS6430698U (en) | 1987-08-13 | 1987-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6430698U true JPS6430698U (en) | 1989-02-27 |
Family
ID=31371745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987123154U Pending JPS6430698U (en) | 1987-08-13 | 1987-08-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6430698U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815496B2 (en) * | 1974-04-09 | 1983-03-25 | 日本化薬株式会社 | Polyacrylic San Alkali Polyester |
| JPS617296B2 (en) * | 1981-05-22 | 1986-03-05 | Shimano Industrial Co |
-
1987
- 1987-08-13 JP JP1987123154U patent/JPS6430698U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815496B2 (en) * | 1974-04-09 | 1983-03-25 | 日本化薬株式会社 | Polyacrylic San Alkali Polyester |
| JPS617296B2 (en) * | 1981-05-22 | 1986-03-05 | Shimano Industrial Co |
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