CN203326549U - Power supply time program controller with current-limiting protection effects - Google Patents
Power supply time program controller with current-limiting protection effects Download PDFInfo
- Publication number
- CN203326549U CN203326549U CN2013203075602U CN201320307560U CN203326549U CN 203326549 U CN203326549 U CN 203326549U CN 2013203075602 U CN2013203075602 U CN 2013203075602U CN 201320307560 U CN201320307560 U CN 201320307560U CN 203326549 U CN203326549 U CN 203326549U
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- current
- power supply
- supply time
- time program
- program controller
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Abstract
The utility model belongs to the field of power supply time program controllers and especially relates to a power supply time program controller with current-limiting protection effects. The power supply time program controller is composed of a circuit board, a display sheet and a housing. The power supply time program controller is characterized by having a current detection circuit and a multi-selectable-shift current-limiting current shift arranged. When a current reaches the value of a current-limiting current, the controller automatically cuts off a power supply. Current-limiting protection effects are achieved. The safety protection function of the power supply time program controller can be enhanced.
Description
Technical field
The utility model belongs to power supply program timer field, relates in particular to a kind of power supply program timer of current limiting protective effect.
Background technology
At present in known power supply program timer, generally adopt 32 groups of program control circulation timei in week, 16 cover parameter switching time, there is no safety protection function.
The utility model content
In order to solve the safeguard protection problem, the utility model provides a kind of power supply program timer of current limiting protective effect.
The technical scheme in the invention for solving the technical problem is:
A kind of power supply program timer; formed by circuit board, demonstration sheet, shell, it is characterized in that: be provided with current detection circuit, many grades of optional cut-off current gears, when electric current reaches selected cut-off current; the controller automatic cut-off power, reach the current-limiting protection effect.
The beneficial effects of the utility model are the safety protection functions that increase the power supply program timer.
The accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the utility model is further illustrated.
Fig. 1 is the control principle schematic flow sheet.
In figure, 1. power supply, 2. existing power supply program timer function, 3. output electric current measure, 4 cut-off current gear and comparing functions, 5. the current limliting power-off signal produces and output.
Embodiment
In Fig. 1, during the normal operation of power supply program timer, within the time period of energising, when electric current output surpasses selected electric current gear, after output electric current measure 3 detects actual current, cut-off current gear and comparing function 4 compare, when check result is while exceeding current limit, the current limliting power-off signal produces and exports 5 and send power-off signal, outputs in existing power supply program timer function 2, cuts off the electricity supply.
Claims (1)
1. the power supply program timer of a current limiting protective effect; by circuit board, demonstration sheet, shell, formed; it is characterized in that: be provided with current detection circuit, many grades of optional cut-off current gears; when electric current reaches selected cut-off current; the controller automatic cut-off power, reach the current-limiting protection effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203075602U CN203326549U (en) | 2013-05-31 | 2013-05-31 | Power supply time program controller with current-limiting protection effects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203075602U CN203326549U (en) | 2013-05-31 | 2013-05-31 | Power supply time program controller with current-limiting protection effects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326549U true CN203326549U (en) | 2013-12-04 |
Family
ID=49665843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203075602U Expired - Fee Related CN203326549U (en) | 2013-05-31 | 2013-05-31 | Power supply time program controller with current-limiting protection effects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592355A (en) * | 2018-05-17 | 2018-09-28 | 广东美的制冷设备有限公司 | Control box and air-conditioning system |
-
2013
- 2013-05-31 CN CN2013203075602U patent/CN203326549U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592355A (en) * | 2018-05-17 | 2018-09-28 | 广东美的制冷设备有限公司 | Control box and air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140531 |