Hefei Aichuangwei Electronic Technology Co., Ltd.

Autochips Inc.

Hefei Keda Bio-technology Co. Ltd

Ke Wang

Wei Wang

Lei Han

Jun Pan

Lei Qiu

Dianwu Li

Lixiang Xu

Lixiang Wen

Gang Wang

Qianliu Cheng

Yan Geng

Xun Zhao

Zonggui Wang

Fenfen Ji

A constant current generation circuit for optocoupler isolation amplifier and a current precision adjustment method are provided. The constant current generation circuit includes a start circuit, a current generation circuit and a precision adjustment and output circuit integrated into a same substrate. The start circuit can generate and output a first start current and a second start current. The current generation circuit includes a negative temperature change rate current generation circuit connected to a first start current output and a positive temperature change rate current generation circuit connected to a second start current output. The precision adjustment and output circuit outputs constant current meeting application requirements of optocoupler isolation amplifier by adjusting proportional precision of two currents output from a current generation circuit.

Constant current generation circuit for optocoupler isolation amplifier and current precision adjustment method

Disclosed is a circuit for shifting a fixed ground level to a floating ground level in a motor drive system, including a floating ground high level line, a floating ground output level line, a floating ground low level line, a normal input level line, and a normal ground line that are used for characterizing an application detail. The circuit includes a controlled switching current source, a first upper current rectifier, a second upper current rectifier, a lower current rectifier, and an amplifying and shaping circuit that are integrated on a same substrate.

Circuit for shifting fixed ground level to floating ground level in motor drive system

A memantine paroxetine cocrystal salt and its preparation method, pharmaceutical composition and application thereof are provided. The cocrystal salt of the invention is memantine paroxetine sulfate hydrate. Its mechanism of action is 5-HT inhibitor and NMDA receptor antagonist. It is a multi-target drug. The preliminary pharmacokinetic experiments showed that the main pharmacokinetic parameters of cocrystal salt and memantine, such as T, T, Cand AUC, were significantly different. The results also showed that cocrystal salt could improve drug absorption, blood drug concentration, bioavailability and curative effect. This provides a material basis for reducing dosage and adverse drug reactions. In addition to that the cocrystal salt of this invention can be used as a multi-target drug, it can also combine with other drugs of different action mechanisms to form compound preparations or be used in combination, so as to obtain unexpected clinical efficacy.

Memantine paroxetine cocrystal salt and its preparation method, pharmaceutical composition and application

Disclosed is a circuit for converting a temperature change amount into a voltage change amount in a motor drive system, including a positive temperature change rate voltage generation module, a circuit bias module, and a temperature detection module that are integrated on a same substrate. An external power supply voltage is processed by the positive temperature change rate voltage generation module and the circuit bias module, and then inputted to the temperature detection module. The temperature detection module detects in real time the temperature change amount in the motor drive system, convert the temperature change amount into the voltage change amount, and transfer the voltage change amount to the circuit bias module, to allow the circuit bias module to output the voltage change amount. In this way, the conversion from the temperature change amount into the voltage change amount is realized.

Circuit for converting temperature change amount into voltage change in motor drive system

The present disclosure provides a start-up initialization circuit of motor drive system, including a power amplitude detecting and internal power supply module, a controlled delay module, a waveform shaping module and a power supply judging and adjusting module integrated on a same substrate, configured to detect and manage a voltage change of each node of a drive system in real time to cause a motor drive system to realize a start-up initialization process transit from an off state to a normal working state. The present disclosure finally forms the start-up initialization circuit of motor drive system by integrating the power amplitude detecting and internal power supply module, the controlled delay module, the waveform shaping module and the power supply judging and adjusting module and integrating on a single chip, which greatly ensures the reliability of power on and start-up of the motor drive system.

Start-up initialization circuit of motor drive system

The present disclosure discloses a bandgap reference power generation circuit and an integrated circuit. The bandgap reference power generation circuit includes a bias circuit and a bandgap reference core circuit. The bias circuit is configured to provide starting current according to a bias voltage. The bandgap reference core circuit is connected to the bias circuit to receive the starting current and goes into a stable operating state according to the starting current to output a preset voltage or preset current. The integrated circuit includes the bandgap reference power generation circuit. By the aforementioned method, the present disclosure can simplify a circuit design and reduce power consumption.

Growing community of inventors

Hefei, China

Ke Wang