CN217548878U - Control circuit for starting fire extinguishing plaster - Google Patents
Control circuit for starting fire extinguishing plaster Download PDFInfo
- Publication number
- CN217548878U CN217548878U CN202220839670.2U CN202220839670U CN217548878U CN 217548878 U CN217548878 U CN 217548878U CN 202220839670 U CN202220839670 U CN 202220839670U CN 217548878 U CN217548878 U CN 217548878U
- Authority
- CN
- China
- Prior art keywords
- circuit
- diode
- capacitor
- thermocouple
- voltage
- 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.)
- Active
Links
Images
Landscapes
- Fire Alarms (AREA)
Abstract
The utility model relates to a control circuit that subsides of putting out a fire start, a serial communication port, include: the device comprises a thermocouple, a power supply, an oscillation circuit, a step-up transformer, a voltage doubling rectifying circuit and a discharge circuit; the thermocouple is conducted when the temperature reaches a first preset value; the first end of the thermocouple is connected with the positive pole of the power supply, the second end of the thermocouple is connected with the first end of the oscillating circuit, the second end of the oscillating circuit is connected with the negative pole of the power supply, the oscillating circuit comprises a primary coil of the boosting transformer, a secondary coil of the boosting transformer is connected with the voltage-multiplying rectifying circuit, and the voltage-multiplying rectifying circuit is connected with the discharging circuit; and the discharge circuit is in short circuit when the temperature reaches a second preset value, so that the fire extinguishing paste is started. Thereby realizing the quick start of the fire extinguishing patch and timely fire extinguishing; in addition, the control circuit has low energy consumption and safe storage and transportation.
Description
Technical Field
The utility model relates to a fire control technical field especially relates to a control circuit that subsides of putting out a fire start.
Background
The electric energy plays a very important role in social development, is the basis for normal operation of all walks of life, and can not be applied to people in daily life or industrial production. However, the electric power is extremely dangerous, and when a power system has a fault, such as short circuit of an electric wire, overload, ground fault, poor contact of electrical components and the like, high-voltage large-current discharge can convert electric energy into heat energy, so that surrounding insulation objects are overheated to catch fire, and fire is caused.
Traditional fire extinguishing system starts and adopts smoke sensor mostly, adopts manual control mode to start when meetting open fire, and this kind of mode realizes that the effect is not good, puts out a fire untimely. Or, adopt temperature-sensing ware, when reaching the temperature of settlement, temperature-sensing ware is to command center feedback signal, carries out commander by command center and starts fire extinguishing apparatus, realizes putting out a fire, and this mode also has the untimely problem of putting out a fire.
SUMMERY OF THE UTILITY MODEL
Technical problem
In view of this, the utility model discloses the technical problem that solve is how to start the subsides of putting out a fire fast, in time puts out a fire.
Solution scheme
In order to solve the technical problem, according to the utility model discloses an embodiment provides a control circuit that subsides of putting out a fire start, include: the device comprises a thermocouple, a power supply, an oscillation circuit, a step-up transformer, a voltage doubling rectifying circuit and a discharge circuit; the thermocouple is conducted when the temperature reaches a first preset value;
the first end of the thermocouple is connected with the positive pole of the power supply, the second end of the thermocouple is connected with the first end of the oscillating circuit, the second end of the oscillating circuit is connected with the negative pole of the power supply, the oscillating circuit comprises a primary coil of the boosting transformer, a secondary coil of the boosting transformer is connected with the voltage-multiplying rectifying circuit, and the voltage-multiplying rectifying circuit is connected with the discharging circuit; and the discharge circuit is in short circuit when the temperature reaches a second preset value, so that the fire extinguishing patch is started.
For the control circuit for starting the fire extinguishing paste, in a possible implementation manner, a first end of a secondary coil of the boosting transformer is connected with a second end of the voltage-multiplying rectification circuit, a second end of the secondary coil of the boosting transformer is connected with a first end of the voltage-multiplying rectification circuit, a third end of the voltage-multiplying rectification circuit is connected with a first end of the discharge circuit, and a fourth end of the voltage-multiplying rectification circuit is connected with a second end of the discharge circuit.
For the control circuit that the above-mentioned fire extinguishing paste starts, in a possible implementation, still include: and the alarm circuit is connected with the thermocouple and the power supply, and the thermocouple is conducted to enable the alarm circuit to work.
For the control circuit for starting the fire extinguishing patch, in a possible implementation manner, the alarm circuit comprises: the power supply comprises a first resistor, a power supply indicator lamp and a buzzer;
the second end of the thermocouple is connected with the first end of the first resistor, the second end of the first resistor is connected with the first end of the power indicator, the second end of the power indicator is connected with the first end of the buzzer, and the second end of the buzzer is connected with the negative electrode of the power supply.
For the control circuit for starting the fire extinguishing patch, in one possible implementation manner, the oscillation circuit comprises: triode, second resistance, first coil primary, wherein, the triode collecting electrode with the thermocouple second end first end of first coil is connected, first coil second end with the first end of second resistance is connected, second resistance second end with the triode base is connected, the triode projecting pole with primary connects first end, primary second end with the power negative pole is connected.
For the control circuit for starting the fire extinguishing patch, in one possible implementation manner, the voltage-doubling rectifying circuit comprises: the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the first diode, the second diode, the third diode, the fourth diode and the fifth diode;
the first end of the first capacitor is connected with the second end of the secondary coil, and the second end of the first capacitor is connected with the anode of the first diode, the cathode of the second diode and the first end of the third capacitor;
the cathode of the first diode is connected with the first end of the secondary coil and the first end of the second capacitor;
the second end of the second capacitor is connected with the anode of the second diode, the cathode of the third diode and the first end of the fourth capacitor;
the anode of the third diode is connected with the second end of the third capacitor, the first end of the fifth capacitor and the cathode of the fourth diode;
the anode of the fourth diode is connected with the second end of the fourth capacitor and the cathode of the fifth diode;
and the anode of the fifth diode is connected with the second end of the fifth capacitor.
For the control circuit for the start of the fire extinguishing patch, in one possible implementation manner, the fire extinguishing patch is provided with a heat-sensitive wire, and the discharge circuit includes: a bimetal spring needle; and when the bimetal elastic needle is in short circuit, the discharge ignites the thermosensitive wire.
For the control circuit for starting the fire extinguishing paste, in a possible implementation manner, the first end of the bimetal elastic needle is connected with the cathode of the fifth diode, the anode of the fourth diode and the second end of the fourth capacitor, and the second end of the bimetal elastic needle is connected with the second end of the fifth capacitor and the anode of the fifth diode.
Advantageous effects
Through the control circuit for starting the fire extinguishing sticker provided by the embodiment of the utility model, when the external temperature reaches the first preset value, the thermocouple is conducted, and when the temperature reaches the second preset value, the discharge circuit is in short circuit to start the fire extinguishing sticker, so that the fire extinguishing sticker is quickly started to extinguish fire in time; in addition, the control circuit has low energy consumption and safe storage and transportation.
Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present invention and, together with the description, serve to explain the principles of the invention.
Fig. 1 shows a schematic structural diagram of a control circuit for starting a fire extinguishing patch according to an embodiment of the present invention.
Fig. 2 shows a schematic structural diagram of a control circuit for starting the fire extinguishing patch according to an embodiment of the present invention.
Fig. 3 shows a circuit diagram of a control circuit for activating a fire extinguishing patch according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
Fig. 1 shows a schematic structural diagram of a control circuit for starting a fire extinguishing patch according to an embodiment of the present invention. As shown in fig. 1, includes: a thermocouple 101, a power supply 102, an oscillation circuit 103, a step-up transformer 104, a voltage doubler rectifier circuit 105, and a discharge circuit 106; the thermocouple 101 is turned on when the temperature reaches a first preset value.
Wherein, a first end of the thermocouple 101 is connected with the positive pole of the power supply 102, a second end of the thermocouple 101 is connected with a first end of the oscillating circuit 103, a second end of the oscillating circuit 103 is connected with the negative pole of the power supply 102, the oscillating circuit 103 comprises a primary coil of the step-up transformer 104, a secondary coil of the step-up transformer 104 is connected with the voltage doubling rectifying circuit 105, and the voltage doubling rectifying circuit 105 is connected with the discharging circuit 106; and the discharge circuit 106 is in short circuit when the temperature reaches a second preset value, so that the fire extinguishing patch is started.
For example, the power source 102 may be a dc power source, for example, the power source 102 may be a 3v dc power source, and it is understood that the voltage of the power source may be set according to requirements, and is not limited herein.
Specific values of the first preset value and the second preset value can be set according to actual requirements, and the second preset value can be larger than the first preset value. When the temperature of the environment where the fire extinguishing patch is located reaches a first preset value, the fire condition occurs in the environment, and at the moment, the thermocouple 101 is conducted; illustratively, the first preset value may be 125 ℃. After the thermocouple 101 is turned on, the oscillating circuit 103, the step-up transformer 104 and the voltage-doubling rectifying circuit 105 work, and as the temperature continuously rises, when the temperature reaches a second preset value, the discharging circuit 106 is in short circuit, so that the fire extinguishing patch is started, and the second preset value may be 175 ℃.
In the actual working process, the thermocouple 101 can be installed at a position with a higher temperature in a protected space, when the external temperature reaches a first preset value, the thermocouple 101 is conducted, the oscillating circuit 103 converts direct current generated by the power supply 102 into alternating current, the booster transformer 104 and the voltage doubling rectifying circuit 105 boost the circuit voltage, and when the temperature reaches a second preset value, the discharging circuit 106 is in short circuit to discharge, so that the fire extinguishing patch is started, and the fire extinguishing patch is quickly started to extinguish fire in time. The control circuit is sensitive in response and low in energy consumption, and is not electrified during storage and transportation, so that the storage and transportation are safe.
Fig. 2 shows a schematic structural diagram of a control circuit for starting a fire extinguishing patch according to an embodiment of the present invention.
Components in fig. 2 that are numbered the same as those in fig. 1 have the same functions, and detailed descriptions of these components are omitted for the sake of brevity.
As shown in fig. 2, the control circuit for the activation of the fire extinguishing patch shown in fig. 2 is mainly different from the control circuit for the activation of the fire extinguishing patch shown in fig. 1 in that:
in a possible implementation manner, as shown in fig. 2, the control circuit for starting the fire extinguishing patch further includes an alarm circuit 107, the alarm circuit 107 is connected with the thermocouple 101 and the power supply 102, and the thermocouple 101 is conducted to enable the alarm circuit 107 to work.
In the actual working process, when the temperature reaches a first preset value, the thermocouple 101 is conducted, illustratively, the thermocouple 101 is conducted to enable the alarm circuit 107 to work and send out an alarm, meanwhile, the oscillating circuit 103 converts direct current generated by a power supply into alternating current, the booster transformer 104 and the voltage doubling rectifying circuit 105 raise the circuit voltage, and when the temperature reaches a second preset value, the discharge circuit 106 is in short circuit discharge to enable the fire extinguishing patch to be started, so that the fire extinguishing patch is quickly started and timely extinguishes fire. Meanwhile, the control circuit has the functions of alarming and secondary temperature setting, namely, the control circuit gives an alarm when the temperature reaches a first preset value and starts the fire extinguishing patch when the temperature reaches a second preset value; in addition, the control circuit is sensitive in response, low in energy consumption and safe in storage and transportation.
Fig. 3 shows a circuit diagram of a control circuit for actuating a fire extinguishing patch according to an embodiment of the present invention. The components in fig. 3 that are numbered the same as in fig. 1 and 2 have the same function.
In one possible implementation, as shown in fig. 3, the alarm circuit 107 may include: the device comprises a first resistor R1, a power indicator VD and a buzzer LS; the second end of the thermocouple 101 is connected with the first end of the first resistor R1, the second end of the first resistor R1 is connected with the first end of the power indicator VD, the second end of the power indicator VD is connected with the first end of the buzzer LS, and the second end of the buzzer LS is connected with the negative electrode of the power supply 102.
The first resistor R1 is used for limiting current, so that the power indicator VD and the buzzer LS can work normally; the power indicator VD is used for indicating the on-off of the circuit, and the buzzer LS is used for fire alarm.
In the actual working process, when the temperature reaches a first preset value, the thermocouple 101 is conducted, the alarm circuit 107 starts to give an alarm, the power indicator VD lights up, the buzzer LS gives an alarm sound, and a fire alarm is given in time.
In one possible implementation, as shown in fig. 3, the oscillation circuit 103 includes: triode Q, second resistance R2, first coil L1, primary coil L2, wherein, triode Q collecting electrode with thermocouple 101 second end the first end of first coil L1 is connected, first coil L1 second end with the first end of second resistance R2 is connected, second resistance R2 second end with triode Q base is connected, triode Q projecting pole with the first end of primary coil L2 is connected, the second end of primary coil L2 with the power 102 negative pole is connected.
Illustratively, the transistor Q may be an S8050NPN type transistor, and it is understood that the transistor Q may also be other types, which is not limited herein.
Illustratively, the oscillation circuit is used to convert direct current into alternating current. As shown in fig. 3, the oscillating circuit 103 is a transformer feedback oscillating circuit, and the connection is a common collector connection, wherein the first coil L1 is a feedback coil, and the primary coil L2 is a load coil. The polarity of a voltage signal input by the base electrode of the triode Q is positive (+), the polarity of a voltage signal of the emitting electrode is positive (+), the polarity of a voltage signal fed back to the base electrode is positive (+), and the triode Q belongs to a positive feedback circuit.
In one possible implementation manner, as shown in fig. 3, a first end of a secondary coil L3 of the step-up transformer 104 is connected to a second end of the voltage-doubling rectifying circuit 105, a second end of the secondary coil L3 of the step-up transformer 104 is connected to a first end of the voltage-doubling rectifying circuit 105, a third end of the voltage-doubling rectifying circuit 105 is connected to a first end of the discharging circuit 106, and a fourth end of the voltage-doubling rectifying circuit 105 is connected to a second end of the discharging circuit 106.
The secondary winding L3 of the step-up transformer 104 has a larger number of turns than the primary winding L2, and belongs to a step-up transformer, so that the output voltage is larger than the input voltage, and the input voltage can be raised to about 100 v.
In one possible implementation, as shown in fig. 3, the voltage doubler rectification circuit 105 includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first diode VD1, a second diode VD2, a third diode VD3, a fourth diode VD4, and a fifth diode VD5; a first end of the first capacitor C1 is connected to a second end of the secondary coil L3, and a second end of the first capacitor C1 is connected to an anode of the first diode VD1, a cathode of the second diode VD2, and a first end of the third capacitor C3; the cathode of the first diode VD1 is connected with the first end of the secondary coil L3 and the first end of the second capacitor C2; the second end of the second capacitor C2 is connected with the anode of the second diode VD2, the cathode of the third diode VD3, and the first end of the fourth capacitor C4; the anode of the third diode VD3 is connected to the second end of the third capacitor C3, the first end of the fifth capacitor C5, and the cathode of the fourth diode VD 4; the anode of the fourth diode VD4 is connected to the second end of the fourth capacitor C4 and the cathode of the fifth diode VD5; the anode of the fifth diode VD5 is connected to the second end of the fifth capacitor C5.
The voltage doubler rectifier circuit 105 boosts the circuit voltage, for example, if the amplitude of the voltage of the secondary coil L3 is 300V; the voltage across the first capacitor C1 is 300V, and the voltages across the third capacitor C3 and the fifth capacitor C5 are 600V respectively; according to the judgment of the directions of all diodes in the voltage doubling rectifying circuit 105, the charging voltage of each diode is that the input end is positive and the output end is negative; namely, the polarity of the voltage signal at the positive pole of each diode is positive (+), and the polarity of the voltage signal at the negative pole is negative (-), then the output voltage of the voltage doubling rectifying circuit 105 is 600+300=1500v, namely, the voltage at the two ends of the discharging circuit is 1500V.
In one possible implementation, as shown in fig. 3, the fire extinguishing patch is provided with a heat-sensitive wire, and the discharge circuit 106 includes: a bimetal spring needle; and when the bimetal elastic needle is in short circuit, the discharge ignites the thermosensitive wire.
The discharge circuit 106 adopts a bimetal elastic needle which is in short circuit after being subjected to overheat thermal deformation, electric sparks are instantly generated to discharge, and a thermosensitive wire is ignited, so that the fire extinguishing patch can be quickly started, fire extinguishing substances are released, and a fire disaster is extinguished.
For example, the second preset temperature may be a temperature at which the bimetal latch is short-circuited by thermal deformation.
Illustratively, the heat-sensitive wire can be prepared by mixing and plasticizing the temperature-sensitive combustible agent, the stabilizer, the flame retardant, the performance regulator and the solvent, pressing the mixture into a medicinal strip after plasticizing, cutting the medicinal strip after air drying, and drying the medicinal strip. The fire extinguishing paste can connect aerosol and an easily-ignited point through the heat-sensitive wire, if the short-circuit temperature of the thermal deformation of the bimetal elastic needle is 175 ℃, namely the second preset value is 175 ℃, when the temperature reaches 175 ℃, the bimetal elastic needle is instantaneously heated and deformed, the discharge circuit is short-circuited, electric sparks are generated to discharge, and the heat-sensitive wire is ignited, so that the aerosol fire extinguishing agent is quickly started, and the fire is timely extinguished. Compared with the self-starting mode of the fire extinguishing patch, the self-starting mode is realized when the surface temperature of the heat-sensitive wire reaches 170-180 ℃ and the heating duration exceeds 10 s; the control circuit can quickly ignite the thermosensitive wire to extinguish fire in time when reaching the second preset value.
In a possible implementation manner, as shown in fig. 3, a first end of a bimetal spring pin is connected to a negative electrode of the fifth diode VD5, a positive electrode of the fourth diode VD4, and a second end of the fourth capacitor C4, and the second end of the bimetal spring pin is connected to a second end of the fifth capacitor C5 and a positive electrode of the fifth diode VD 5.
In the actual working process, if a fire occurs in the environment, the environment temperature gradually rises, when the temperature exceeds a first preset value, the thermocouple 101 is conducted, the alarm circuit 107 starts to work, and an alarm is given out so as to inform workers to check whether the equipment is in fire in time; at the same time, the oscillation circuit 103 converts the direct current generated by the power supply into alternating current, and the step-up transformer 104 and the voltage doubler rectifier circuit 105 step up the circuit voltage. If the environmental temperature continues to rise, the bimetal elastic needle is continuously heated and deformed, when the temperature reaches the temperature of the bimetal elastic needle heated, deformed and short-circuited, the bimetal elastic needle is short-circuited to emit electric sparks to ignite a thermosensitive wire and release fire extinguishing substances, and therefore fire is extinguished timely. The control circuit has the functions of alarming and secondary temperature setting, namely, when the temperature reaches a first preset value, the control circuit gives an alarm, and when the temperature reaches the temperature of the heated deformation short circuit of the bimetal elastic needle, the bimetal elastic needle is short circuited and immediately gives an electric spark to ignite a thermosensitive wire, so that the fire extinguishing patch releases fire extinguishing substances, the reaction is sensitive, and the fire is extinguished in time; in addition, the control circuit has low energy consumption and safe storage and transportation.
It should be noted that, although the above embodiments are described as examples of the control circuit for activating the fire extinguishing patch, those skilled in the art will understand that the present invention should not be limited thereto. In fact, the user can set each implementation mode flexibly according to personal preference and/or practical application scene, as long as the technical scheme of the utility model is met.
Thus, through the embodiment, when the external temperature reaches the first preset value, the thermocouple in the control circuit is conducted, and when the temperature reaches the second preset value, the discharge circuit is in short circuit, so that the fire extinguishing patch is started, and the fire extinguishing patch is quickly started to extinguish fire in time; in addition, the control circuit has low energy consumption and safe storage and transportation.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A control circuit for the activation of a fire suppression patch, comprising: the device comprises a thermocouple, a power supply, an oscillation circuit, a step-up transformer, a voltage doubling rectifying circuit and a discharge circuit; the thermocouple is conducted when the temperature reaches a first preset value;
the first end of the thermocouple is connected with the positive electrode of the power supply, the second end of the thermocouple is connected with the first end of the oscillating circuit, the second end of the oscillating circuit is connected with the negative electrode of the power supply, the oscillating circuit comprises a primary coil of the boosting transformer, a secondary coil of the boosting transformer is connected with the voltage-multiplying rectifying circuit, and the voltage-multiplying rectifying circuit is connected with the discharging circuit; and the discharge circuit is in short circuit when the temperature reaches a second preset value, so that the fire extinguishing patch is started.
2. The control circuit according to claim 1, wherein a first terminal of the secondary winding of the step-up transformer is connected to a second terminal of the voltage-doubling rectifying circuit, a second terminal of the secondary winding of the step-up transformer is connected to the first terminal of the voltage-doubling rectifying circuit, a third terminal of the voltage-doubling rectifying circuit is connected to the first terminal of the discharging circuit, and a fourth terminal of the voltage-doubling rectifying circuit is connected to the second terminal of the discharging circuit.
3. The control circuit of claim 1, further comprising: and the alarm circuit is connected with the thermocouple and the power supply, and the thermocouple is conducted to enable the alarm circuit to work.
4. The control circuit of claim 3, wherein the alarm circuit comprises: the power supply comprises a first resistor, a power supply indicator lamp and a buzzer;
the second end of the thermocouple is connected with the first end of the first resistor, the second end of the first resistor is connected with the first end of the power indicator, the second end of the power indicator is connected with the first end of the buzzer, and the second end of the buzzer is connected with the negative electrode of the power supply.
5. The control circuit of claim 1, wherein the oscillating circuit comprises: triode, second resistance, first coil primary, wherein, the triode collecting electrode with the thermocouple second end first end of first coil is connected, first coil second end with the first end of second resistance is connected, second resistance second end with the triode base is connected, the triode projecting pole with primary connects first end, primary second end with the power negative pole is connected.
6. The control circuit according to claim 1, wherein the voltage doubler rectification circuit comprises: the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the first diode, the second diode, the third diode, the fourth diode and the fifth diode;
the first end of the first capacitor is connected with the second end of the secondary coil, and the second end of the first capacitor is connected with the anode of the first diode, the cathode of the second diode and the first end of the third capacitor;
the cathode of the first diode is connected with the first end of the secondary coil and the first end of the second capacitor;
the second end of the second capacitor is connected with the anode of the second diode, the cathode of the third diode and the first end of the fourth capacitor;
the anode of the third diode is connected with the second end of the third capacitor, the first end of the fifth capacitor and the cathode of the fourth diode;
the anode of the fourth diode is connected with the second end of the fourth capacitor and the cathode of the fifth diode;
and the anode of the fifth diode is connected with the second end of the fifth capacitor.
7. The control circuit of claim 6, wherein the fire extinguishing patch is provided with a heat sensitive wire, and the discharge circuit comprises: a bimetal spring needle; and when the bimetal elastic needle is in short circuit, the discharge ignites the thermosensitive wire.
8. The control circuit of claim 7, wherein the first end of the bimetal latch is connected to the cathode of the fifth diode, the anode of the fourth diode and the second end of the fourth capacitor, and the second end of the bimetal latch is connected to the second end of the fifth capacitor and the anode of the fifth diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220839670.2U CN217548878U (en) | 2022-04-07 | 2022-04-07 | Control circuit for starting fire extinguishing plaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220839670.2U CN217548878U (en) | 2022-04-07 | 2022-04-07 | Control circuit for starting fire extinguishing plaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217548878U true CN217548878U (en) | 2022-10-11 |
Family
ID=83470403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220839670.2U Active CN217548878U (en) | 2022-04-07 | 2022-04-07 | Control circuit for starting fire extinguishing plaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217548878U (en) |
-
2022
- 2022-04-07 CN CN202220839670.2U patent/CN217548878U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101663814A (en) | Power cutoff device automatically operated upon occurrence of spark on electric wire | |
| CN217548878U (en) | Control circuit for starting fire extinguishing plaster | |
| CN111031643B (en) | Light sensation control circuit and control method | |
| CN115764812B (en) | Automatic protection method for switching power supply and switching power supply | |
| CN209786855U (en) | Automatic power-off safety protection device of charger | |
| CN210639450U (en) | Intelligent detection zero-power consumption multi-mode switching control circuit | |
| CN201118192Y (en) | Controller for limiting power utilization | |
| CN105148428A (en) | Energy storage type starter of automatic aerosol extinguishing device | |
| CN207342083U (en) | A kind of intelligent extinguishing device for having automatically and manually Starting mode concurrently | |
| CN207184318U (en) | Multi-functional expansion protection circuit | |
| CN213991111U (en) | Explosion flash lamp working at ultralow temperature by using electronic heater | |
| TWM501043U (en) | Rechargeable battery, charging device and charging system | |
| CN110727232B (en) | Intelligent detection zero-power consumption multi-mode switching control circuit | |
| CN216700397U (en) | High-power explosion flash type signal lamp working at 220V alternating current | |
| CN114623463B (en) | High-energy igniter | |
| CN219204730U (en) | Halogen lamp control circuit and spectrum therapeutic apparatus | |
| CN220544713U (en) | Charging device and power supply | |
| CN216818856U (en) | Power plug bad contact protection circuit | |
| US20220399623A1 (en) | Smart vehicle battery clip | |
| CN216958757U (en) | Socket protection device and socket | |
| CN217545142U (en) | Intelligent charging socket for electric vehicle | |
| CN219936518U (en) | Overheat pre-warning device for transformer body and distribution box switch pile head | |
| CN214850520U (en) | New energy vehicle charging equipment | |
| CN211606381U (en) | Protection circuit for reducing startup surge of switching power supply | |
| CN2917181Y (en) | Power supply device for microwave sulfur lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |