CN105222913A - A kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system - Google Patents
A kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system Download PDFInfo
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- CN105222913A CN105222913A CN201510753858.XA CN201510753858A CN105222913A CN 105222913 A CN105222913 A CN 105222913A CN 201510753858 A CN201510753858 A CN 201510753858A CN 105222913 A CN105222913 A CN 105222913A
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Abstract
The invention discloses a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system, form primarily of processor, the A/D modular converter that is all connected with this processor and display and the temperature sensor that is connected with this A/D modular converter; It is characterized in that: be also connected with three-terminal voltage-stabilizing warning circuit on the processor, described three-terminal voltage-stabilizing warning circuit is also connected with filter resonance circuit; Described three-terminal voltage-stabilizing warning circuit is made up of transformer T, voltage input circuit, temperature signal input circuit and warning warning circuit.The present invention not only structure is simple, and it is with low cost, it can be reported to the police when flue-gas temperature superelevation immediately by three-terminal voltage-stabilizing warning circuit, dangerous situation can be processed in time, therefore flue gas can be prevented overheated and burn and cause fire, the danger of even blasting, ensure that the safety of production, is therefore applicable to promoting the use.
Description
Technical field
The present invention relates to a kind of warning system, specifically refer to a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system.
Background technology
Carbon baking furnace uses petroleum coke and pitch to do raw material usually, and at high operating temperatures, calcination department completes and the raw baking carbon blocks of vibration moulding is become qualified ripe carbon block.Raw carbon block temperature in roasting process is 200-1200 DEG C, and this process discharges a large amount of baking flue gas, and baking furnace fume principal ingredient is glance coal, tar and various combustible dust, and flue gas exit temperature is up to 900 DEG C.At high temperature, these flue gases must discharge flue in time, otherwise easy overheated burning, even set off an explosion.For the ease of finding secret, usually need to use warning device, this warning device can be reported to the police when flue-gas temperature superelevation, so that process dangerous situation in time.Low, slow in reacting for the warning system sensitivity of carbon baking furnace at present, dangerous situation can not be found immediately.
Summary of the invention
The object of the invention is to overcome low for the warning system sensitivity of carbon baking furnace at present, slow in reacting, the defect of dangerous situation can not be found immediately, not only structure is simple to provide one, and it is with low cost, the hidden danger of flue-gas temperature superelevation can also be found immediately, so that process the carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system of dangerous situation in time.
The present invention is achieved through the following technical solutions: a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system, forms primarily of processor, the A/D modular converter that is all connected with this processor and display and the temperature sensor that is connected with this A/D modular converter; Also be connected with three-terminal voltage-stabilizing warning circuit on the processor, described three-terminal voltage-stabilizing warning circuit is also connected with filter resonance circuit; Described three-terminal voltage-stabilizing warning circuit is by transformer T, be arranged on the secondary of transformer T and the warning warning circuit be connected with its secondary coil, be arranged on the former limit of transformer T and the voltage input circuit be connected with the Same Name of Ends of its primary coil, and the temperature signal input circuit be serially connected between the non-same polarity of primary coil of transformer T and voltage input circuit forms; Described filter resonance circuit is connected with voltage input circuit.
Further technical scheme is, described filter resonance circuit is by triode VT6, triode VT7, power amplifier P, metal-oxide-semiconductor Q, one end is connected with the electrode input end of power amplifier P, the resistance R9 that the other end is connected with power supply and voltage input circuit respectively as the input end of filter resonance circuit, positive pole is connected with the negative input of power amplifier P, the polar capacitor C5 of minus earth, N pole is connected with the output terminal of power amplifier P, the voltage stabilizing diode D7 that P pole is connected with the base stage of triode VT7 after resistance R12, be serially connected in the resistance R10 between the collector of triode VT6 and the emitter of triode VT7, positive pole is connected with the emitter of triode VT6 after resistance R11, the polar capacitor C6 that negative pole is connected with the base stage of triode VT7, and one end is connected with the collector of triode VT6 after voltage stabilizing diode D6, the resistance R13 that the other end is connected with the base stage of triode VT7 after voltage stabilizing diode D8 forms, the positive pole of described polar capacitor C6 is connected with the tie point of resistance R13 with voltage stabilizing diode D6, and the base stage of described triode VT6 is connected with the negative input of power amplifier P, the grid of described metal-oxide-semiconductor Q is connected with the output terminal of power amplifier P, and its source electrode is connected with the emitter of triode VT7, and its drain electrode is connected with the collector of triode VT7 and the P pole of voltage stabilizing diode D7 respectively, the base stage of described triode VT7 is connected with voltage input circuit as the output terminal of filter resonance circuit.
Further technical scheme is, described voltage input circuit is by triode VT1, triode VT2, one end is connected with the emitter of triode VT1 after voltage stabilizing diode D1, the inductance L that the other end is connected with power supply jointly with the emitter of triode VT2, one end is connected with the tie point of inductance L with voltage stabilizing diode D1, the resistance R1 that the other end is connected with the emitter of triode VT2, P pole is connected with the collector of triode VT1 after resistance R2, the voltage stabilizing diode D2 that N pole is connected with the collector of triode VT2, and positive pole is connected with the emitter of triode VT2, the polar capacitor C1 of minus earth forms, the base stage of described triode VT1 is connected with the emitter of triode VT2 and the input end of filter resonance circuit respectively, and its collector is also connected with the base stage of triode VT2, and its emitter is also connected with the Same Name of Ends of the primary coil of transformer T, the described collector of triode VT2 is connected with the output terminal of filter regulator circuit, and described temperature signal input circuit is connected with the P pole of voltage stabilizing diode D2.
Further technical scheme is, described temperature signal input circuit is by relay K, triode VT3, triode VT4, N pole is connected with processor after resistance R3, the voltage stabilizing diode D3 that P pole is connected with the base stage of triode VT3, positive pole is connected with the collector of triode VT4 after resistance R4, the polar capacitor C2 that negative pole is connected with the collector of triode VT3, N pole is connected with the collector of triode VT4, the voltage stabilizing diode D4 that P pole is connected with the emitter of triode VT4 after resistance R5, and the normally opened contact K-1 of the relay K be serially connected between the non-same polarity of primary coil of transformer T and the P pole of voltage stabilizing diode D4 forms, described relay K is serially connected between the collector of triode VT4 and the P pole of voltage stabilizing diode D2, the base stage of described triode VT4 is also connected with the collector of triode VT3, the grounded emitter of described triode VT3, the positive pole of described polar capacitor C2 is also connected with the N pole of voltage stabilizing diode D3.
Further technical scheme is, described warning warning circuit is by triode VT5, N pole is connected with the non-same polarity of the secondary coil of transformer T after slide rheostat R6, P pole is in turn through voltage stabilizing diode D4 that polar capacitor C4 is connected with the collector of triode VT5 after LED and resistance R8, P pole is connected with the Same Name of Ends of the secondary coil of transformer T, the voltage stabilizing diode D5 that N pole is connected with the base stage of triode VT5, positive pole is connected with the base stage of triode VT5, the polar capacitor C3 that negative pole is connected with the emitter of triode VT5, be serially connected in the resistance R7 between the emitter of triode VT5 and the N pole of voltage stabilizing diode D4, and the acoustical generator BL be serially connected between the emitter of triode VT5 and polar capacitor C4 and the tie point of LED forms, the grounded collector of described triode VT5.
For guaranteeing to respond to the temperature that carbon baking furnace produces flue gas accurately and effectively, described temperature sensor adopts thermocouple temperature sensor.
For the ease of to processor input control order, described display is the liquid crystal display with touch-input function.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention's not only simple in structure and low in cost, and it can be reported to the police when flue-gas temperature superelevation immediately by three-terminal voltage-stabilizing warning circuit, can process dangerous situation in time, flue gas therefore can be prevented overheated and burn and cause fire, the danger of even blasting, ensure that the safety of production.Meanwhile, filtering and noise reduction process can be carried out to whole three-terminal voltage-stabilizing warning circuit, to ensure the stable operation of three-terminal voltage-stabilizing warning circuit by the filter resonance circuit be arranged on three-terminal voltage-stabilizing warning circuit.
(2) three-terminal voltage-stabilizing warning circuit of the present invention is the combination of voltage input circuit, temperature signal input circuit and warning warning circuit three, voltage input circuit is used for processing supply voltage, for whole three-terminal voltage-stabilizing warning circuit provides stable voltage, ensure the stable operation of whole circuit; Temperature signal input circuit can when flue gas reaches the temperature value of setting the temperature signal of receiving processor turning circuit so that report to the police; Warning warning circuit is reported to the police by warning lamp and acoustical generator after temperature signal input circuit must conduct simultaneously, therefore can ensure that the present invention reports to the police the very first time when flue-gas temperature superelevation.
(3) temperature sensor of the present invention adopts thermocouple temperature sensor, can respond to the temperature that carbon baking furnace produces flue gas accurately and effectively.
(4) what display of the present invention adopted is the liquid crystal display with touch-input function, to processor input control order.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is electrical block diagram three-terminal voltage-stabilizing warning circuit of the present invention connecting filter resonance circuit.
Fig. 3 is the electrical block diagram of filter resonance circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, warning system of the present invention forms primarily of processor, the A/D modular converter that is all connected with this processor and display and the temperature sensor that is connected with this A/D modular converter, described temperature sensor adopts thermocouple temperature sensor, and described display is the liquid crystal display with touch-input function.For the ease of reporting to the police immediately when flue-gas temperature superelevation, being also connected with three-terminal voltage-stabilizing warning circuit on the processor, meanwhile, described three-terminal voltage-stabilizing warning circuit being also connected with filter resonance circuit.
As shown in Figure 2, described three-terminal voltage-stabilizing warning circuit is made up of transformer T, voltage input circuit, temperature signal input circuit and warning warning circuit.Concrete, described voltage input circuit is arranged on the former limit of transformer T and is connected with the Same Name of Ends of its primary coil, and this voltage input circuit is also connected with filter resonance circuit; Between the non-same polarity that described temperature signal input circuit is serially connected in the primary coil of transformer T and voltage input circuit, described warning warning circuit is then arranged on the secondary of transformer T and is connected with its secondary coil.
Wherein, voltage input circuit is by triode VT1, and triode VT2, inductance L, voltage stabilizing diode D1, voltage stabilizing diode D2, resistance R1, resistance R2 and polar capacitor C1 form.During connection, one end of described inductance L is connected with the emitter of triode VT1 after voltage stabilizing diode D1, and its other end is connected with power supply jointly with the emitter of triode VT2.The P pole of described voltage stabilizing diode D1 is connected with inductance L, its N pole then with the emitter of triode VT1.One end of described resistance R1 is connected with the tie point of inductance L with voltage stabilizing diode D1, and its other end is connected with the emitter of triode VT2.The P pole of described voltage stabilizing diode D2 is connected with the collector of triode VT1 after resistance R2, and its N pole is connected with the collector of triode VT2.The positive pole of described polar capacitor C1 is connected with the emitter of triode VT2, its minus earth.
Meanwhile, the base stage of described triode VT1 is connected with the emitter of triode VT2, and the collector of this triode VT1 is also connected with the base stage of triode VT2, and the emitter of this triode VT1 is also connected with the Same Name of Ends of the primary coil of transformer T.Described voltage input circuit is used for processing supply voltage, so that provide stable voltage for whole three-terminal voltage-stabilizing warning circuit.
Described temperature signal input circuit is by relay K, and triode VT3, triode VT4, voltage stabilizing diode D3, voltage stabilizing diode D4, resistance R3, resistance R4, resistance R5 and polar capacitor C2 form.During connection, the N pole of described voltage stabilizing diode D3 is connected with processor after resistance R3, and its P pole is connected with the base stage of triode VT3.The positive pole of described polar capacitor C2 is connected with the collector of triode VT4 after resistance R4, and its negative pole is connected with the collector of triode VT3.The N pole of described voltage stabilizing diode D4 is connected with the collector of triode VT4, and P pole is connected with the emitter of triode VT4 after resistance R5.The normally opened contact K-1 of described relay K is serially connected between the non-same polarity of the primary coil of transformer T and the P pole of voltage stabilizing diode D4.
Simultaneously, described relay K is serially connected between the collector of triode VT4 and the P pole of voltage stabilizing diode D2, the base stage of described triode VT4 is also connected with the collector of triode VT3, the grounded emitter of described triode VT3, the positive pole of described polar capacitor C2 is also connected with the N pole of voltage stabilizing diode D3.Described temperature signal input circuit is used for the overtemperature signal that receiving processor sends, during use, when temperature sensor senses exceedes the temperature value of setting to flue-gas temperature, processor sends signal to temperature signal input circuit, the normally opened contact K-1 of relay K closes, thus the whole three-terminal voltage-stabilizing warning circuit of conducting, warning warning circuit can be reported to the police immediately.
Described warning warning circuit by triode VT5, slide rheostat R6, resistance R7, resistance R8, polar capacitor C3, polar capacitor C4, voltage stabilizing diode D4, voltage stabilizing diode D5, LED and acoustical generator BL.The N pole of described voltage stabilizing diode D4 is connected with the secondary non-same polarity of transformer T after slide rheostat R6, its P pole in turn after polar capacitor C4 and LED and resistance R8 with the collector of triode VT5.Wherein, the sliding end of described slide rheostat R6 is connected with the non-same polarity of the secondary coil of transformer T; The positive pole of described polar capacitor C4 is connected with the P pole of voltage stabilizing diode D4, and its negative pole is connected with LED.The P pole of described voltage stabilizing diode D5 is connected with the Same Name of Ends of the secondary coil of transformer T, and its N pole is connected with the base stage of triode VT5.The positive pole of described polar capacitor C3 is connected with the base stage of triode VT5, and its negative pole is connected with the emitter of triode VT5.
Described resistance R7 is serially connected between the emitter of triode VT5 and the N pole of voltage stabilizing diode D4, and described acoustical generator BL is serially connected between the emitter of triode VT5 and polar capacitor C4 and the tie point of LED, the grounded collector of described triode VT5.Warning warning circuit of the present invention is reported to the police by warning lamp and acoustical generator after temperature signal input circuit must conduct simultaneously, therefore can ensure that the present invention reports to the police the very first time when flue-gas temperature superelevation.
As shown in Figure 3, described filter resonance circuit by triode VT6, triode VT7, power amplifier P, metal-oxide-semiconductor Q, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, voltage stabilizing diode D6, voltage stabilizing diode D7, voltage stabilizing diode D8, polar capacitor C5 and polar capacitor C6 form.During connection, one end of described resistance R9 is connected with the electrode input end of power amplifier P, and its other end is connected with the base stage of power supply and triode VT1 respectively as the input end of filter resonance circuit.The positive pole of described polar capacitor C5 is connected with the negative input of power amplifier P, its minus earth.The N pole of described voltage stabilizing diode D7 is connected with the output terminal of power amplifier P, and its P pole is connected with the base stage of triode VT7 after resistance R12.Described resistance R10 is serially connected between the collector of triode VT6 and the emitter of triode VT7.The positive pole of described polar capacitor C6 is connected with the emitter of triode VT6 after resistance R11, and its negative pole is connected with the base stage of triode VT7.One end of described resistance R13 is connected with the collector of triode VT6 after voltage stabilizing diode D6, and its other end is connected with the base stage of triode VT7 after voltage stabilizing diode D8.Concrete, the N pole of described voltage stabilizing diode D6 is connected with the collector of triode VT6, and its P pole is connected with resistance R13; The P pole of described voltage stabilizing diode D8 is connected with resistance R13, and its N pole is connected with the base stage of triode VT7.
Meanwhile, the positive pole of described polar capacitor C6 is connected with the tie point of resistance R13 with voltage stabilizing diode D6, and the base stage of described triode VT6 is connected with the negative input of power amplifier P.The grid of described metal-oxide-semiconductor Q is connected with the output terminal of power amplifier P, and its source electrode is connected with the emitter of triode VT7, and its drain electrode is connected with the collector of triode VT7 and the P pole of voltage stabilizing diode D7 respectively.The base stage of described triode VT7 is connected with the collector of triode VT2 as the output terminal of filter resonance circuit.Described filter resonance circuit is used for carrying out filtering and noise reduction process to whole three-terminal voltage-stabilizing warning circuit, to ensure the stable operation of three-terminal voltage-stabilizing warning circuit.
As mentioned above, just the present invention can be realized preferably.
Claims (7)
1. a carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system, forms primarily of processor, the A/D modular converter that is all connected with this processor and display and the temperature sensor that is connected with this A/D modular converter; It is characterized in that: be also connected with three-terminal voltage-stabilizing warning circuit on the processor, described three-terminal voltage-stabilizing warning circuit is also connected with filter resonance circuit; Described three-terminal voltage-stabilizing warning circuit is by transformer T, be arranged on the secondary of transformer T and the warning warning circuit be connected with its secondary coil, be arranged on the former limit of transformer T and the voltage input circuit be connected with the Same Name of Ends of its primary coil, and the temperature signal input circuit be serially connected between the non-same polarity of primary coil of transformer T and voltage input circuit forms; Described filter resonance circuit is connected with voltage input circuit.
2. a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system according to claim 1, it is characterized in that: described filter resonance circuit is by triode VT6, triode VT7, power amplifier P, metal-oxide-semiconductor Q, one end is connected with the electrode input end of power amplifier P, the resistance R9 that the other end is connected with power supply and voltage input circuit respectively as the input end of filter resonance circuit, positive pole is connected with the negative input of power amplifier P, the polar capacitor C5 of minus earth, N pole is connected with the output terminal of power amplifier P, the voltage stabilizing diode D7 that P pole is connected with the base stage of triode VT7 after resistance R12, be serially connected in the resistance R10 between the collector of triode VT6 and the emitter of triode VT7, positive pole is connected with the emitter of triode VT6 after resistance R11, the polar capacitor C6 that negative pole is connected with the base stage of triode VT7, and one end is connected with the collector of triode VT6 after voltage stabilizing diode D6, the resistance R13 that the other end is connected with the base stage of triode VT7 after voltage stabilizing diode D8 forms, the positive pole of described polar capacitor C6 is connected with the tie point of resistance R13 with voltage stabilizing diode D6, and the base stage of described triode VT6 is connected with the negative input of power amplifier P, the grid of described metal-oxide-semiconductor Q is connected with the output terminal of power amplifier P, and its source electrode is connected with the emitter of triode VT7, and its drain electrode is connected with the collector of triode VT7 and the P pole of voltage stabilizing diode D7 respectively, the base stage of described triode VT7 is connected with voltage input circuit as the output terminal of filter resonance circuit.
3. a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system according to claim 2, it is characterized in that: described voltage input circuit is by triode VT1, triode VT2, one end is connected with the emitter of triode VT1 after voltage stabilizing diode D1, the inductance L that the other end is connected with power supply jointly with the emitter of triode VT2, one end is connected with the tie point of inductance L with voltage stabilizing diode D1, the resistance R1 that the other end is connected with the emitter of triode VT2, P pole is connected with the collector of triode VT1 after resistance R2, the voltage stabilizing diode D2 that N pole is connected with the collector of triode VT2, and positive pole is connected with the emitter of triode VT2, the polar capacitor C1 of minus earth forms, the base stage of described triode VT1 is connected with the emitter of triode VT2 and the input end of filter resonance circuit respectively, and its collector is also connected with the base stage of triode VT2, and its emitter is also connected with the Same Name of Ends of the primary coil of transformer T, the described collector of triode VT2 is connected with the output terminal of filter regulator circuit, and described temperature signal input circuit is connected with the P pole of voltage stabilizing diode D2.
4. a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system according to claim 3, it is characterized in that: described temperature signal input circuit is by relay K, triode VT3, triode VT4, N pole is connected with processor after resistance R3, the voltage stabilizing diode D3 that P pole is connected with the base stage of triode VT3, positive pole is connected with the collector of triode VT4 after resistance R4, the polar capacitor C2 that negative pole is connected with the collector of triode VT3, N pole is connected with the collector of triode VT4, the voltage stabilizing diode D4 that P pole is connected with the emitter of triode VT4 after resistance R5, and the normally opened contact K-1 of the relay K be serially connected between the non-same polarity of primary coil of transformer T and the P pole of voltage stabilizing diode D4 forms, described relay K is serially connected between the collector of triode VT4 and the P pole of voltage stabilizing diode D2, the base stage of described triode VT4 is also connected with the collector of triode VT3, the grounded emitter of described triode VT3, the positive pole of described polar capacitor C2 is also connected with the N pole of voltage stabilizing diode D3.
5. a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system according to claim 4, it is characterized in that: described warning warning circuit is by triode VT5, N pole is connected with the non-same polarity of the secondary coil of transformer T after slide rheostat R6, P pole is in turn through voltage stabilizing diode D4 that polar capacitor C4 is connected with the collector of triode VT5 after LED and resistance R8, P pole is connected with the Same Name of Ends of the secondary coil of transformer T, the voltage stabilizing diode D5 that N pole is connected with the base stage of triode VT5, positive pole is connected with the base stage of triode VT5, the polar capacitor C3 that negative pole is connected with the emitter of triode VT5, be serially connected in the resistance R7 between the emitter of triode VT5 and the N pole of voltage stabilizing diode D4, and the acoustical generator BL be serially connected between the emitter of triode VT5 and polar capacitor C4 and the tie point of LED forms, the grounded collector of described triode VT5.
6. a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system according to any one of Claims 1 to 5, is characterized in that: described temperature sensor adopts thermocouple temperature sensor.
7. a kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system according to claim 6, is characterized in that: described display is the liquid crystal display with touch-input function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510753858.XA CN105222913A (en) | 2015-11-09 | 2015-11-09 | A kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510753858.XA CN105222913A (en) | 2015-11-09 | 2015-11-09 | A kind of carbon baking furnace three-terminal voltage-stabilizing filter resonance formula temperature alarm system |
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| SU525859A1 (en) * | 1974-08-13 | 1976-08-25 | Проектно-Конструкторское Бюро Главного Управления Электрификации И Энергетического Хозяйства Министерства Путей Сообщения Ссср | Temperature control device |
| CN1928480A (en) * | 2006-09-19 | 2007-03-14 | 沈阳铝镁设计研究院 | Calcining kiln flue temperature monitoring explosion-proof system |
| CN104602397A (en) * | 2014-11-26 | 2015-05-06 | 成都创图科技有限公司 | Phase processing based low-pass filtering LED voltage stabilizing system |
| CN204334364U (en) * | 2014-11-28 | 2015-05-13 | 成都措普科技有限公司 | A kind of non-linear negative feedback switching power supply of logic-based protection emitter-base bandgap grading manifold type |
| CN104935190A (en) * | 2014-11-27 | 2015-09-23 | 成都雷克尔科技有限公司 | Combined protection logic protection amplification type driving power supply for power system fault detection |
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2015
- 2015-11-09 CN CN201510753858.XA patent/CN105222913A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU525859A1 (en) * | 1974-08-13 | 1976-08-25 | Проектно-Конструкторское Бюро Главного Управления Электрификации И Энергетического Хозяйства Министерства Путей Сообщения Ссср | Temperature control device |
| CN1928480A (en) * | 2006-09-19 | 2007-03-14 | 沈阳铝镁设计研究院 | Calcining kiln flue temperature monitoring explosion-proof system |
| CN104602397A (en) * | 2014-11-26 | 2015-05-06 | 成都创图科技有限公司 | Phase processing based low-pass filtering LED voltage stabilizing system |
| CN104935190A (en) * | 2014-11-27 | 2015-09-23 | 成都雷克尔科技有限公司 | Combined protection logic protection amplification type driving power supply for power system fault detection |
| CN204334364U (en) * | 2014-11-28 | 2015-05-13 | 成都措普科技有限公司 | A kind of non-linear negative feedback switching power supply of logic-based protection emitter-base bandgap grading manifold type |
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Application publication date: 20160106 |
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| WW01 | Invention patent application withdrawn after publication |