33results about How to "With thermal protection" patented technology

The invention relates to the technical field of stirring rods, in particular to a handheld stirring rod and a processing method thereof. The handheld stirring rod comprises a housing, a stirring rod body, a microprocessor, a force sensor, a gyro sensor, a revolving speed sensor, a temperature sensor and a motor, and is characterized in that a plurality of signal ends of the microprocessor are respectively connected with the input end of a rectification circuit, the signal output end of the force sensor, the signal output end of the gyro sensor, the signal output end of the revolving speed sensor, the signal output end of the temperature sensor, the signal input ends of a plurality of LED lamps and one end of a power cord; the output end of the rectification circuit is connected with the input end of the motor; and the LED lamps comprise N speed display lamps, one work indicator light and one overload display lamp, where the N is a natural number larger than or equal to 3. Compared with the prior art, the speed is started and adjusted through the intensity of grip strength of fingers, and the operation is simpler. Moreover, the stirring rod, which has the functions of both overturn protection and overhead protection, is safer and more reliable for use.

The invention discloses a filter-frequency-adjustable audio processing system based on linear driving. The system is mainly composed of an audio acquisition module, a frequency selecting circuit, a microprocessing circuit, an amplifying circuit and an adjustable filter circuit, wherein the frequency selecting circuit is connected with the audio acquisition module, the microprocessing circuit is connected with the frequency selecting circuit, and the amplifying circuit and the adjustable filter circuit are both connected with the microprocessing circuit. The system is characterized in that a linear driving circuit is further arranged between the microprocessing circuit and the frequency selecting circuit; the linear driving circuit is composed of a driving chip U, a triode VT4, a triode VT5, a triode VT6, a triode VT7 and the like. The linear driving circuit can make the audio processing system more stable.

The invention discloses a high-precision low-drift integrated voltage reference source circuit, which comprises a PTAT generating circuit (1) for generating a PTAT current; a voltage boosting circuit (2) for boosting the PTAT voltage and realizing the startup isolation of the circuit ; The current feedback circuit (3) is used to stabilize the output voltage and improve the temperature stability of its current; the overheating protection circuit (4) is used for overheating protection of the output tube; the high current drive and overcurrent protection circuit (5) is used for It is used to adjust the output voltage of the output tube when the load current is large; it is used for the overcurrent protection of the transistor in the high current drive circuit; the power supply voltage distribution circuit (6) is used to improve the DC power supply suppression characteristics of the output reference voltage; the output drive and reverse connection The protection circuit (7) is used to strengthen the driving capability of the output reference and the circuit reverse connection protection.

The invention discloses a thermo-sensitive magnetic releaser of a fireproof door. The releaser comprises a magnetic source component and a release component. The magnetic source component is mounted on the fireproof door and comprises a permanent magnet steel, and the release component is mounted on the wall or the ground and comprises a thermo-sensitive magnetic sheet. By means of the principle of the loss of ferromagnetism of thermo-sensitive magnetic sheet materials at the custom temperature, the mutual attractive force between the magnetic source component and the release component disappears after the thermo-sensitive magnetic sheet is heated to the Curie temperature during the working or the environment temperature rises to the custom temperature in the fire situation, and the fireproof door is closed by the drive of the elasticity of a door closer. The thermo-sensitive magnetic releaser of the fireproof door has the advantages of simple structure, low cost and the like, and is beneficial for saving energies, convenient to operate and wide in applicability. The releaser has an automatic release function and an automatic power off function after release. The releaser is provided with overcurrent-and-overheat protection, rain proof and safe and reliable.