Abstract: The present disclosure belongs to the technical field of antimicrobial peptide (AMP) production, and relates to a medium for breeding a Hermetia illucens larva that produces a highly active antimicrobial peptide (AMP), a breeding method, and an extraction method of an AMP. The present disclosure provides a medium for breeding a Hermetia illucens larva that produces a highly active AMP, including wheat bran, where the medium has a moisture content of 65% to 70%. In the present disclosure, the medium can realize the rapid and effective production of the highly active AMP by the Hermetia illucens larva.

Abstract: The present disclosure discloses a pressure detection assembly and an ultrasonic welding device, the pressure detection assembly includes a first connecting piece, a second connecting piece, a detection unit and an elastic member, wherein the first connecting piece is provided with a first guide portion; the second connecting piece is connected to the first connecting piece, and the second connecting piece is provided with a second guide portion matched with the first guide portion; the detection unit is provided between the first connecting piece and the second connecting piece, and the detection unit is configured to collect the pressure value between the first connecting piece and the second connecting piece; and the elastic member is connected between the first connecting piece and the second connecting piece, wherein the elastic member can make the first connecting piece and the second connecting piece clamp the detection unit.

Abstract: A detection method based on a battery defect detection system, a system and a storage medium are disclosed. The detection method includes: acquiring a scanning trigger signal, and controlling an ultrasonic transceiver and a motion control platform to work, so that the ultrasonic transceiver receives waveform data of ultrasonic waves passing through a cell; controlling an oscilloscope to collect the waveform data; receiving the waveform data and performing imaging processing to obtain an imaging diagram; and detecting whether or not the cell has a defect according to the imaging diagram.

Abstract: The present invention provides a common-mode transient suppression protection circuit for a digital isolator, including a modulation circuit, a demodulation circuit and an isolation capacitor connected between the modulation circuit and the demodulation circuit. The modulation circuit includes a modulation circuit front-end and a drive circuit, which are connected in sequence, and a clamping module is arranged in the drive circuit. The protection circuit further includes a linear voltage regulator structure connected with the drive circuit, and a power supply clamp is arranged in the linear voltage regulator structure. By providing the linear voltage regulator structure having the power supply clamp and the drive circuit having the clamping module in the protection circuit, low-voltage devices in the drive circuit can be protected from being damaged by high-voltage signals generated by common-mode transient interference.

Abstract: The present invention discloses a differential signal amplification circuit as well as a digital isolator and a digital receiver applying the differential signal amplification circuit, wherein the differential signal amplification circuit includes a multi-stage differential amplifier and a common-mode transient adaptive biasing circuit. The common-mode transient adaptive biasing circuit is configured to detect a positive or negative common-mode transient interference signal at a positive input terminal and a negative input terminal, and provide a biasing current of a differential amplifier of at least one stage above a second stage when the positive or negative common-mode transient interference signals are detected. With the technical solutions of the present invention, abnormal signal transmission caused by the common-mode interference signals can be suppressed.

Abstract: Provided are a low-jitter digital isolator circuit and a digital isolator including the same. The digital isolator circuit includes a signal transmitting module, a signal receiving module, and an isolation channel connected between the signal transmitting module and the signal receiving module. The signal transmitting module is provided with a signal input terminal, and the signal receiving module is provided with a signal output terminal. The signal transmitting module includes a reset circuit, an oscillator and a transmitting circuit which are sequentially connected. The reset circuit is connected to the signal input terminal. The transmitting circuit is connected to the isolation channel. The signal receiving module includes a receiving circuit connected to the isolation channel. In the present invention, more stable signal transmission and a better isolation effect are achieved, and the area and cost of the digital isolator circuit are reduced.

Abstract: Provided is a preamplifying circuit, including a first amplifier and a second amplifier sequentially connected in series, wherein an output end of the second amplifier is connected to a circuit output end, and an input end of the first amplifier is connected to a circuit input end. The preamplifying circuit further includes a positive feedback branch including a diode group and a third amplifier, wherein one end of the diode group is connected to the input end of the first amplifier. The positive feedback circuit can positively feed part of signals back to the other end of the diode group, so that voltage drops at two ends of the diode group can be reduced, and harmonic distortion caused by nonlinearity of the diode group is reduced. Thus, the sound quality detected by a microphone sensor is improved.