CN87214359U - Automatic protective device for television sets - Google Patents
Automatic protective device for television sets Download PDFInfo
- Publication number
- CN87214359U CN87214359U CN 87214359 CN87214359U CN87214359U CN 87214359 U CN87214359 U CN 87214359U CN 87214359 CN87214359 CN 87214359 CN 87214359 U CN87214359 U CN 87214359U CN 87214359 U CN87214359 U CN 87214359U
- Authority
- CN
- China
- Prior art keywords
- protector
- protective device
- link
- converter
- automatic protective
- 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.)
- Withdrawn
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an automatic protective device for TV comprising an over-current releasing section and an over-voltage releasing section. When the circuit is in a state of over-current and over-voltage, the automatic protective device for TV can quickly cut off the power to protect the TV from being damaged. The automatic protective device for TV is provided with a buffer circuit to reduce the starting surge current of TV, and the automatic protective device for TV can prolong the service life of TV.
Description
The utility model belongs to Protector for electric appliances.
Existing television set protective device, ubiquity problems such as complex circuit, element are many, cost height.
The purpose of this utility model provides a kind of simple in structure, sensitive, when circuit generation overcurrent or overvoltage abnormal conditions, and the domestic television set automatic safety device that can cut off the electricity supply rapidly.
Major technique content of the present utility model is made up of two parts: a part discharges link for overcurrent, and another part is that overvoltage discharges link.Control the on/off of this protector by a permanent magnetism release type direct current relay.When the electric current by this protector and voltage surpassed the rated value of television set, relay just moved, and cuts off the electricity supply automatically.
As a further feature, be provided with " buffer circuit " in this protector circuit, it mainly is made up of thermistor RRB and thyristor SCR.It can reduce the initial impulse current of television set greatly, thereby prolongs the useful life of television set.
Below in conjunction with a description of drawings most preferred embodiment of the present utility model:
Fig. 1 is the fundamental diagram of television set automatic protector;
Fig. 2 is the winding diagram of this protector.
(1 is the overcurrent release link of television set automatic protector, and (2) are that the overvoltage of this protector discharges link, and (3) are the buffer circuit link.Contact J
1-1(4) and contact J
1-2(5) be normally-closed contact, (6) are the electric power incoming line plug, and (7) are power output socket.
Overcurrent discharges link (1) by contact J
1-1, converter BL-15, relay coil J and contact J
1-2Form.After the running parameter of converter BL-15 was determined, when overcurrent appearred in this protector, the electric current on the converter BL-15 also increased thereupon; when electric current reaches rated value, force the tongue tube closure, electric current moment is sent into relay coil; make the actuating of relay, disconnect normally-closed contact J
1-1And J
1-2, cut off the electricity supply.
Overvoltage discharges link (2) by resistance R
1, rectifier diode D, converter BL-400, resistance R
2Form with relay coil J.When overvoltage appearred in this protector, the coil voltage on the converter BL-400 also increased rapidly, when increasing to its rated value, and the tongue tube closure in the converter, electric current is sent into relay coil, and the actuating of relay is cut off the electricity supply.
Use for making this protector can adapt to different television sets, can be divided into colour television set automatic protector and black and white television set automatic protector two classes. Determine in the protector crucial element---the work parameter of converter by the power of television set, the work parameter of converter is that by television set rated power about 1.2 times are adjusted in this protector.
Claims (1)
- A kind of television set automatic protector; comprise that an overcurrent discharges link (1) and an overvoltage discharges link (2); it is characterized in that this protector also comprises a buffer circuit link (3); in overcurrent release link (1), a converter BL-15 is arranged; in overvoltage release link (2), a converter BL-400 is arranged; the running parameter of converter is that 1.2 times by television set rated power are adjusted; buffer circuit link (3) mainly is made up of thermistor RRB and thyristor SCR; the on/off of this protector is controlled by a permanent magnetism release type direct current relay J.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214359 CN87214359U (en) | 1987-10-14 | 1987-10-14 | Automatic protective device for television sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214359 CN87214359U (en) | 1987-10-14 | 1987-10-14 | Automatic protective device for television sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87214359U true CN87214359U (en) | 1988-07-13 |
Family
ID=4828696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87214359 Withdrawn CN87214359U (en) | 1987-10-14 | 1987-10-14 | Automatic protective device for television sets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87214359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954237A (en) * | 2019-11-22 | 2020-04-03 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
-
1987
- 1987-10-14 CN CN 87214359 patent/CN87214359U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954237A (en) * | 2019-11-22 | 2020-04-03 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
| CN110954237B (en) * | 2019-11-22 | 2021-11-30 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |