JPS63176395U - - Google Patents
Info
- Publication number
- JPS63176395U JPS63176395U JP1987066036U JP6603687U JPS63176395U JP S63176395 U JPS63176395 U JP S63176395U JP 1987066036 U JP1987066036 U JP 1987066036U JP 6603687 U JP6603687 U JP 6603687U JP S63176395 U JPS63176395 U JP S63176395U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- fan motor
- error
- reference voltage
- output
- 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 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
Landscapes
- Control Of Direct Current Motors (AREA)
Description
第１図は、本考案の一実施例を示す回路図、第
２図は、正常供給時の駆動電圧の波形図、第３図
は異常供給時の駆動電圧の波形図である。
３……フアンモータ、４……スイツチを構成す
るトランジスタ、６……基準電圧源、７，８……
電圧検出回路、９……比較回路。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a waveform diagram of the drive voltage during normal supply, and FIG. 3 is a waveform diagram of the drive voltage during abnormal supply. 3... Fan motor, 4... Transistor constituting the switch, 6... Reference voltage source, 7, 8...
Voltage detection circuit, 9...comparison circuit.
Claims (1)
を取り出す電圧検出回路と、基準電圧源と、前記
誤差電圧を前記基準電圧と比較して前記誤差電圧
が前記基準電圧を越えたことを示す比較出力を取
り出す比較回路と、前記比較出力の印加に応じて
前記駆動電圧を前記フアンモータに供給するスイ
ツチとを具備したことを特徴とするフアンモータ
の駆動電圧供給回路。 A voltage detection circuit that extracts an error voltage indicating a variation in the drive voltage of the fan motor, a reference voltage source, and a comparison output that compares the error voltage with the reference voltage and indicates that the error voltage exceeds the reference voltage. A drive voltage supply circuit for a fan motor, comprising: a comparison circuit for extracting the output; and a switch for supplying the drive voltage to the fan motor in response to application of the comparison output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987066036U JPS63176395U (en) | 1987-04-30 | 1987-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987066036U JPS63176395U (en) | 1987-04-30 | 1987-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63176395U true JPS63176395U (en) | 1988-11-15 |
Family
ID=30903662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987066036U Pending JPS63176395U (en) | 1987-04-30 | 1987-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63176395U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50124114A (en) * | 1974-03-08 | 1975-09-30 |
-
1987
- 1987-04-30 JP JP1987066036U patent/JPS63176395U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50124114A (en) * | 1974-03-08 | 1975-09-30 |