CN2165455Y - Working mode display for small electrical heater - Google Patents
Working mode display for small electrical heater Download PDFInfo
- Publication number
- CN2165455Y CN2165455Y CN 93224581 CN93224581U CN2165455Y CN 2165455 Y CN2165455 Y CN 2165455Y CN 93224581 CN93224581 CN 93224581 CN 93224581 U CN93224581 U CN 93224581U CN 2165455 Y CN2165455 Y CN 2165455Y
- Authority
- CN
- China
- Prior art keywords
- display
- circuit
- power supply
- potentiometer
- electrical heater
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The utility model relates to a working state display for a small electrical heater, which belongs to the manufacture field of testing tools for civil use electric appliances. The utility model is characterized in that a power supply circuit is connected with a display circuit in series, and the display circuit is formed by that after a display element is connected in parallel with a potentiometer for flow diversion, the display element is connected with a fuse wire in series. The display circuit is arranged on a casing with a power plug and a socket and can effectively display the existence of power supply voltage, the quality of functional elements, whether short circuit or broken circuit exists, and the fluctuation of the power supply voltage.
Description
Small-sized electric heater duty display belongs to civilian electric heater testing tool and makes the field.
Present small-sized electric heater does not have the duty display, during use, can't learn the duty of electrical equipment, and the height of no-voltage and supply voltage etc. is arranged as short circuit, open circuit, power supply.
The purpose of this utility model is: a kind of display that can make things convenient for the duty of promptly learning small-sized electric heater is provided.
Of the present utility model being characterised in that: it comprises display circuit, shell and the web member between them, display circuit is in series with a fuse by display element with after doing the potentiometer parallel connection of shunting usefulness and forms, web member between display element, potentiometer, fuse and they and the housing is housed on the shell, and housing has the plug that connects power supply and the socket of circuit closer.
Use proof: the utility model makes the electrical equipment user can the most promptly learn the working condition of electrical equipment.
In order in conjunction with the embodiments the utility model to be carried out more detailed description below, now as follows employed accompanying drawing title of present specification and numbering brief introduction:
Fig. 1, circuit theory diagrams;
Fig. 2, shell view.
Embodiment:
Ask for an interview Fig. 1,2, display circuit is formed by potentiometer 2 back the serial connections with a fuse 3 in parallel of bulb of using as display element 1 and a shunting usefulness, its input end links to each other with an attaching plug 4, output terminal links to each other with a multi-function jack 5, shell 6 is made by ambroin, its front is equipped with bulb 1, potentiometer 2 and is connected three binding posts 7 of effect, an attaching plug 4 is equipped with on the right side of shell 6, a multi-function jack 5 is equipped with in the left side of shell 6, the back shroud 8 of shell 6 inserts by slot, and Fig. 1 wiring is pressed in its inside.
The course of work of this small-sized electric heater duty display is as follows: the potentiometer 2 that will shunt usefulness is transferred to correct position, even bulb 1 does not burn, makes the electric heater operate as normal again, damages when opening circuit when power supply no-voltage or function element, and bulb 1 does not work; When the load circuit short circuit, extinguish or blowout after bulb 1 is bright suddenly, open back shroud 8, can find that fuse 3 is burnt.Along with supply voltage raises, bulb 1 brightens gradually, but the variation of display power supply voltage.
Facts have proved that this covering device is simple and practical, can show the duty of electric heater effectively.
Claims (2)
1, small-sized electric heater duty display, form by display circuit, shell and the connector between them, it is characterized in that: display circuit is in series with a fuse (3) by display element and potentiometer (2) back in parallel of making shunting usefulness and forms, display element, potentiometer (2) are housed on the shell, web member between fuse (3) and they and the housing, housing has plug (4) that connects power supply and the socket (5) that connects electric heater.
2, small-sized electric heater duty display according to claim 1, it is characterized in that: described display element can be bulb (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224581 CN2165455Y (en) | 1993-09-21 | 1993-09-21 | Working mode display for small electrical heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224581 CN2165455Y (en) | 1993-09-21 | 1993-09-21 | Working mode display for small electrical heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2165455Y true CN2165455Y (en) | 1994-05-18 |
Family
ID=33802572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93224581 Expired - Fee Related CN2165455Y (en) | 1993-09-21 | 1993-09-21 | Working mode display for small electrical heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2165455Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699811A (en) * | 2016-03-01 | 2016-06-22 | 麦太保电动工具(中国)有限公司 | Electrical parameter acquisition instrument of electric tool |
-
1993
- 1993-09-21 CN CN 93224581 patent/CN2165455Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699811A (en) * | 2016-03-01 | 2016-06-22 | 麦太保电动工具(中国)有限公司 | Electrical parameter acquisition instrument of electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |