JPS6321118U - - Google Patents
Info
- Publication number
- JPS6321118U JPS6321118U JP11542786U JP11542786U JPS6321118U JP S6321118 U JPS6321118 U JP S6321118U JP 11542786 U JP11542786 U JP 11542786U JP 11542786 U JP11542786 U JP 11542786U JP S6321118 U JPS6321118 U JP S6321118U
- Authority
- JP
- Japan
- Prior art keywords
- comparison
- drive current
- blower motor
- comparison means
- interposed
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Direct Current Motors (AREA)
Description
第１図は、本考案の車載用ブロアモータ駆動回
路の一実施例の回路図であり、第２図は、本考案
出願人が先に提案した車載用ブロアモータ駆動回
路の回路図であり、第３図は、第２図における駆
動電流と増幅信号の特性図である。
２：ブロアモータ、３，１２：検出用抵抗、４
：制御用トランジスタ、５：増幅用オペアンプ、
８：比較用オペアンプ、９：可変抵抗器、１０，
１１：抵抗。
FIG. 1 is a circuit diagram of an embodiment of the in-vehicle blower motor drive circuit of the present invention, FIG. 2 is a circuit diagram of an in-vehicle blower motor drive circuit previously proposed by the applicant of the present invention, and FIG. The figure is a characteristic diagram of the drive current and amplified signal in FIG. 2. 2: Blower motor, 3, 12: Detection resistor, 4
: Control transistor, 5: Amplification operational amplifier,
8: Comparison operational amplifier, 9: Variable resistor, 10,
11: Resistance.
Claims (1)
検出用抵抗と駆動電流調整用の制御手段とを直列
に介装し、前記検出用抵抗の両端電位差を増幅手
段で増幅した増幅信号と基準信号とを比較手段で
比較し、比較信号に応じて前記制御手段を調整し
て駆動電流を一定とする車載用ブロアモータ駆動
回路において、前記増幅信号を分圧して前記比較
手段に与える分圧手段を前記増幅手段と前記比較
手段の間に介装したことを特徴とする車載用ブロ
アモータ駆動回路。 A detection resistor for detecting the drive current and a control means for adjusting the drive current are interposed in series in the drive current path of the blower motor, and an amplified signal obtained by amplifying the potential difference across the detection resistor by an amplification means and a reference signal are generated. In an on-vehicle blower motor drive circuit that performs a comparison using comparison means and adjusts the control means according to the comparison signal to maintain a constant drive current, the voltage dividing means divides the amplified signal and supplies the voltage to the comparison means. An on-vehicle blower motor drive circuit, characterized in that it is interposed between the comparison means and the comparison means.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986115427U JPH0538962Y2 (en) | 1986-07-28 | 1986-07-28 | |
| DE19873710470 DE3710470A1 (en) | 1986-04-02 | 1987-03-30 | Control circuit for a motor drive, in particular a fan motor drive |
| US07/295,953 US4933614A (en) | 1986-04-02 | 1989-01-11 | Motor drive control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986115427U JPH0538962Y2 (en) | 1986-07-28 | 1986-07-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321118U true JPS6321118U (en) | 1988-02-12 |
| JPH0538962Y2 JPH0538962Y2 (en) | 1993-10-01 |
Family
ID=30999070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986115427U Expired - Lifetime JPH0538962Y2 (en) | 1986-04-02 | 1986-07-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538962Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647312A (en) * | 1979-09-20 | 1981-04-30 | Nippon Denso Co Ltd | Air conditioning system for motorcar |
| JPS57124646A (en) * | 1980-12-17 | 1982-08-03 | Sueddeutsche Kuehler Behr | Method of and circuit device for regulating air volume |
| JPS57147910A (en) * | 1981-03-06 | 1982-09-13 | Nippon Denso Co Ltd | Blast amount control device for air conditioner |
-
1986
- 1986-07-28 JP JP1986115427U patent/JPH0538962Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647312A (en) * | 1979-09-20 | 1981-04-30 | Nippon Denso Co Ltd | Air conditioning system for motorcar |
| JPS57124646A (en) * | 1980-12-17 | 1982-08-03 | Sueddeutsche Kuehler Behr | Method of and circuit device for regulating air volume |
| JPS57147910A (en) * | 1981-03-06 | 1982-09-13 | Nippon Denso Co Ltd | Blast amount control device for air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0538962Y2 (en) | 1993-10-01 |