CN204853596U - Electromagnetism stove with function is reminded to temperature - Google Patents
Electromagnetism stove with function is reminded to temperature Download PDFInfo
- Publication number
- CN204853596U CN204853596U CN201520387981.XU CN201520387981U CN204853596U CN 204853596 U CN204853596 U CN 204853596U CN 201520387981 U CN201520387981 U CN 201520387981U CN 204853596 U CN204853596 U CN 204853596U
- Authority
- CN
- China
- Prior art keywords
- base chip
- thermistor
- resistance
- temperature
- guide plate
- 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
- Electric Stoves And Ranges (AREA)
Abstract
The utility model provides an electromagnetism stove with function is reminded to temperature, including furnace body and glass face, be provided with the light guide plate between glass face and the furnace body, the income light side of light guide plate is provided with red emitting diode, interior 555 time base chip and the thermistor of including of furnace body, and thermistor sets up below the glass face positive middlely, thermistor's resistance risees and diminishes along with the temperature, and thermistor's one end is connected with the one end of first resistance and 555 time base chip's discharge end. The utility model discloses can remind the surperficial temperature of electromagnetism stove, have simple structure simultaneously, need not program code, the easy advantage that realizes.
Description
Technical field
The utility model relates to electromagnetic oven field, particularly relates to a kind of electromagnetic oven with temperature-prompting function.
Background technology
Existing electromagnetic oven, can be very boiling hot on the surface of electromagnetic oven after worked, the ignorant words of user, and handle puts up and is easy to scald, and needs there being the situation of temperature to carry out suitable temperature-prompting.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of electromagnetic oven with temperature-prompting function, and solving existing electromagnetic oven can not the problem of reminding user when there being temperature.
The utility model is achieved in that a kind of electromagnetic oven with temperature-prompting function, comprise body of heater and glass surface, light guide plate is provided with between described glass surface and body of heater, the incident side of described light guide plate is provided with red light emitting diodes, base chip and thermistor when comprising 555 in body of heater, thermistor is arranged on middle below glass surface, the resistance of described thermistor raises with temperature and diminishes, when one end of thermistor and one end of the first resistance and 555, the discharge end of base chip is connected, the other end of the first resistance and 555 time base chip reset terminal, the power positive end of base chip when 555, one end of second resistance is connected with power supply, the other end of thermistor and one end of electric capacity, when 555 base chip low triggering end with 555 time base chip high-triggering end be connected, the other end of electric capacity, the power supply negative terminal of base chip when 555, the minus earth of red light emitting diodes, the positive pole of red light emitting diodes with 555 time the output of base chip and the other end of the second resistance be connected.
The utility model tool has the following advantages: can realize the prompting to temperature, and structure is simple, without the need to program code, easily realizes.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Detailed description of the invention
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
Refer to Fig. 1 and Fig. 2, the utility model provides a kind of electromagnetic oven with temperature-prompting function, comprise body of heater 1 and glass surface 2, light guide plate 3 is provided with between described glass surface and body of heater, the incident side of described light guide plate is provided with red light emitting diodes 4, base chip NE555 and thermistor when comprising 555 in body of heater, temperature-sensitive 5 resistance is arranged on middle below glass surface, the resistance of described thermistor raises with temperature and diminishes, when one end of thermistor RD1 and one end of the first resistance R1 and 555, the discharge end of base chip is connected, the other end of the first resistance and 555 time base chip reset terminal, the power positive end of base chip when 555, one end of second resistance R2 is connected with power supply, the other end of thermistor and one end of electric capacity, when 555 base chip low triggering end with 555 time base chip high-triggering end be connected, the other end of electric capacity, the power supply negative terminal of base chip when 555, the minus earth of red light emitting diodes D1, the positive pole of red light emitting diodes with 555 time the output of base chip and the other end of the second resistance be connected.
Operation principle of the present utility model is as follows: electric capacity C1 can be charged by R1, RD1, and is discharged by RD1, and dutycycle is controlled by R1 and RD1, and the discharge and recharge of electric capacity C1 repeats between VCC/3 and 2VCC/3, and VCC is power supply voltage, process analysis procedure analysis:
1. initial capacitance voltage is a little less than VCC/3, now exports high level, and discharge end is closed, and VCC is to capacitor charging time constant 0.693 (R1+RD1) C; C is the value of electric capacity C1.
2. be charged to a little more than VCC/3, high level before exporting maintenance with reference to truth table, discharge end is closed, and VCC is to C charge constant 1/ (R1+RD1) C.
3. be charged to a little more than 2VCC/3, output low level, discharge switch is opened, capacitor discharge time constant 1/RD1*C.
4. discharge into a little less than 2VCC/3, enter maintenance state, capacitor discharge time constant 0.693RD1*C;
5. discharge into and enter 1 a little less than VCC/3, and start circulation.
Particularly, high level time: the time of VCC/3 to the 2VCC/3 that charges through R1, RD1; Low level time: the time discharging into VCC/3 through RD1 from 2VCC/3; Cycle is 0.693 (R1+2RD1) C, dutycycle 1-RD1/ (R1+2RD1).Namely along with the rising of glass surface temperature, the resistance of thermistor constantly declines, and brings dutycycle constantly to rise, thus the brightness of red light emitting diodes is brighter, and user can see brighter redness from light guide plate.User sees that namely brighter redness can know that Current Temperatures rises, as see burn red iron just can know iron very boiling hot, realize the prompting to temperature.Structure is simple, cost is low, also facilitates illiterate people to understand the height of temperature simultaneously.
The foregoing is only embodiment of the present utility model; not thereby scope of patent protection of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. one kind has the electromagnetic oven of temperature-prompting function, it is characterized in that: comprise body of heater and glass surface, light guide plate is provided with between described glass surface and body of heater, the incident side of described light guide plate is provided with red light emitting diodes, base chip and thermistor when comprising 555 in body of heater, thermistor is arranged on middle below glass surface, the resistance of described thermistor raises with temperature and diminishes, when one end of thermistor and one end of the first resistance and 555, the discharge end of base chip is connected, the other end of the first resistance and 555 time base chip reset terminal, the power positive end of base chip when 555, one end of second resistance is connected with power supply, the other end of thermistor and one end of electric capacity, when 555 base chip low triggering end with 555 time base chip high-triggering end be connected, the other end of electric capacity, the power supply negative terminal of base chip when 555, the minus earth of red light emitting diodes, the positive pole of red light emitting diodes with 555 time the output of base chip and the other end of the second resistance be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387981.XU CN204853596U (en) | 2015-06-08 | 2015-06-08 | Electromagnetism stove with function is reminded to temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387981.XU CN204853596U (en) | 2015-06-08 | 2015-06-08 | Electromagnetism stove with function is reminded to temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204853596U true CN204853596U (en) | 2015-12-09 |
Family
ID=54744138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387981.XU Expired - Fee Related CN204853596U (en) | 2015-06-08 | 2015-06-08 | Electromagnetism stove with function is reminded to temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204853596U (en) |
-
2015
- 2015-06-08 CN CN201520387981.XU patent/CN204853596U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204853596U (en) | Electromagnetism stove with function is reminded to temperature | |
| CN204830069U (en) | Electromagnetism stove with heat suggestion | |
| CN204764184U (en) | Chafing dish desk | |
| CN204764185U (en) | Can indicate electromagnetism chafing dish table of temperature | |
| CN203171106U (en) | Portable chargable electric soldering iron | |
| CN205403619U (en) | Use priming sytem sparking gear of super capacitor module | |
| CN204740076U (en) | Make things convenient for circuit of perception temperature | |
| CN204788712U (en) | Hot indicating circuit | |
| CN204708657U (en) | Thermoelectricity conversion electric power storage oven | |
| CN204559534U (en) | A kind of timing control circuit | |
| CN203985742U (en) | Electric mosquito repellent heater | |
| CN204856250U (en) | Simple and easy temperature -control circuit | |
| CN204597823U (en) | A kind of outer hung type temperature difference electrical storage device | |
| CN105286430A (en) | Intelligent vacuum cup | |
| CN205355897U (en) | Wireless charging coil subassembly, wireless module and wireless wallet that charges of charging | |
| CN205121883U (en) | Infrared remote control of farad electric capacity power supply | |
| CN203952232U (en) | Electric mosquito repellent heater | |
| CN105846481A (en) | Safe and fast large-power discharging device and charging and discharging method | |
| CN204216341U (en) | A kind of Timing power supply transducer | |
| CN204167966U (en) | A kind of lithium electricity electric car charger | |
| CN204191705U (en) | A kind of charged warming shoes circuit | |
| CN204351687U (en) | Spontaneous heating electric wok | |
| CN2144384Y (en) | Electric heating tube for integral electronic temp control cut-off and alarm | |
| CN202132995U (en) | Minitype induction-cooker control panel | |
| CN206419720U (en) | A kind of energy-conserving and environment-protective flashlight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160608 |