JPH01172783U - - Google Patents
Info
- Publication number
- JPH01172783U JPH01172783U JP6919488U JP6919488U JPH01172783U JP H01172783 U JPH01172783 U JP H01172783U JP 6919488 U JP6919488 U JP 6919488U JP 6919488 U JP6919488 U JP 6919488U JP H01172783 U JPH01172783 U JP H01172783U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- terminal
- temperature
- dust
- resistance value
- 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
- 230000007423 decrease Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Closed-Circuit Television Systems (AREA)
Description
第１図はこの考案の一実施例による防塵シヤツ
タを駆動する回路図、第２図は従来の防塵シヤツ
タを駆動する回路図である。
図において、１はモニタ、２はモータ、３はダ
イオード、４は抵抗、５は抵抗、６ａ，６ｂは端
子、７は抵抗素子である。なお、図中、同一符号
は同一、又は相当部分を示す。
FIG. 1 is a circuit diagram for driving a dustproof shutter according to an embodiment of the present invention, and FIG. 2 is a circuit diagram for driving a conventional dustproof shutter. In the figure, 1 is a monitor, 2 is a motor, 3 is a diode, 4 is a resistor, 5 is a resistor, 6a and 6b are terminals, and 7 is a resistive element. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
と、この抵抗素子に並列に接続され、上記モータ
に順方向電流を流すダイオードと、上記モータと
第２端子との間に接続され、温度が上ると抵抗値
が高くなり、温度が下がると抵抗値が低くなる特
性を有する温度抵抗素子とを備え、上記第１端子
及び上記第２端子間に電圧が印加されると上記モ
ータに電流が流れて後方確認テレビジヨンの防塵
シヤツタを開閉する防塵シヤツタの駆動装置。 a resistive element connected between the motor and the first terminal; a diode connected in parallel with the resistive element to allow a forward current to flow through the motor; and a diode connected between the motor and the second terminal, and a temperature resistance element having a characteristic that the resistance value increases when the temperature increases and the resistance value decreases when the temperature decreases, and when a voltage is applied between the first terminal and the second terminal, a current flows to the motor. A dust-proof shutter drive device that opens and closes the dust-proof shutter of a rear-view television.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6919488U JPH01172783U (en) | 1988-05-24 | 1988-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6919488U JPH01172783U (en) | 1988-05-24 | 1988-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172783U true JPH01172783U (en) | 1989-12-07 |
Family
ID=31294479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6919488U Pending JPH01172783U (en) | 1988-05-24 | 1988-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172783U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0568178U (en) * | 1992-02-19 | 1993-09-10 | リズム時計工業株式会社 | Shutter control circuit for in-vehicle surveillance camera |
-
1988
- 1988-05-24 JP JP6919488U patent/JPH01172783U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0568178U (en) * | 1992-02-19 | 1993-09-10 | リズム時計工業株式会社 | Shutter control circuit for in-vehicle surveillance camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01172783U (en) | ||
| JPS617296U (en) | Motor drive circuit | |
| JPH0463246U (en) | ||
| JPH0293813U (en) | ||
| JPH0360842U (en) | ||
| JPS5913090U (en) | current control circuit | |
| JPS607017U (en) | sensor circuit | |
| JPS63135411U (en) | ||
| JPS6415971U (en) | ||
| JPS5871225U (en) | Variable attenuator control circuit | |
| JPS5891306U (en) | Hair dryer input switching circuit | |
| JPS61160586U (en) | ||
| JPH03103629U (en) | ||
| JPS60106136U (en) | temperature detection device | |
| JPH0423332U (en) | ||
| JPS58129711U (en) | Inverted pulse generation circuit | |
| JPS58112025U (en) | surge absorber | |
| JPS6110093U (en) | DC motor drive circuit | |
| JPS5989214U (en) | sensor circuit | |
| JPS61160585U (en) | ||
| JPS60192627U (en) | transistor protection circuit | |
| JPS6071851U (en) | Combustion control device | |
| JPH01120083U (en) | ||
| JPS6223321U (en) | ||
| JPS6416133U (en) |