Impulse current

Instrument sharing platforms have been built and launched in various places. Fully alleviate the problem of idle scientific research instruments, make full use of resources, and provide support for enterprises' scientific and technological innovation ability and innovation services. With the positive effect of instrument sharing, the combination of "sharing" and "laboratory" has gradually integrated into the sharing wave.

With the advent of the era of sharing economy, sharing bicycles, power stores and cars brings people many conveniences. In the field of scientific instruments, the open sharing of large scientific research equipment has also become a major trend in the development of the industry. Recently, the State Council issued opinions on strengthening the implementation of the innovation driven development strategy and further promoting the in-depth development of mass entrepreneurship and innovation. The opinions mentioned: 2. Accelerate the transformation of scientific and technological achievements: (6) promote the opening and sharing of instruments and equipment, explore the separation mechanism of instrument and equipment ownership and management right, and explore the introduction of professional service institutions for socialized services for instruments and equipment purchased with financial funds.

Now, the instrument sharing platform has been built and launched in various places. It fully alleviates the problem of idle scientific research instruments, realizes the full utilization of resources, and provides support for enterprises' scientific and technological innovation ability and innovation services. With many positive effects brought by instrument sharing, the combination of "sharing" and "laboratory" has gradually integrated into the sharing wave.

The media recently found that after five years of exploration, Shanghai Zizhu high tech Industrial Development Zone has embarked on a unique road of laboratory sharing. According to statistics, last year alone, nine enterprises with laboratory platforms in the park provided more than 300 enterprises with instruments and equipment with a total price of more than 100 million yuan, with a total service revenue of about 60 million yuan. By this year, 13 enterprises with laboratory platforms have provided instruments and equipment with a total price of more than 1 billion yuan, and the scope of services has been expanded to seven fields, such as aviation technology, electrical energy, new energy and new materials.

It can be seen that instrument and equipment sharing is in full swing. It not only successfully solved the problem of idle resources, but also led to the innovation and development in the field of instruments. In particular, the combination of "sharing" and "laboratory" has brought unexpected surprises.

As we all know, the laboratory is the place where scientific research is carried out. The laboratory with advanced instruments and equipment can promote the smooth development of various research work. However, at present, some small and medium-sized enterprises lack laboratories with such conditions, which leads to many obstacles in some analysis and testing work. Some idle laboratories, with advanced equipment, can not make full use of resources. The opening of shared laboratories can not only let enterprises

Impulse current generally refers to the large current generated inside the electric appliance at the moment of power supply. This is mainly reflected in inductive and capacitive loads. The representative of inductive load is motor. At the moment when the motor starts, it is quite short-circuit, and the current is quite large, because the resistance and inductance of the winding of the motor itself are very small. When the motor is turned off, a reverse impulse current will also be generated. Inductive loads, such as capacitors, are also equivalent to short circuits at the moment of power on. The current moment is theoretically infinite. In addition, the moment when the fluorescent lamp starts, it needs instantaneous high voltage and large current to ionize the mercury vapor inside the lamp tube..

(1) Number of counting pulses λ Independent of RC, the error caused by RC integral nonlinearity can be reduced（ 2) The requirements for pulse source CP remain unchanged as long as it is stable in T1 + T2 time（ 3) The conversion speed is slow and is not suitable for high-speed applications（ 4) High conversion accuracy. Monolithic integrated double integral A / D converters include adc-ek8b (8-bit, binary code), adc-ek10b (10 bit, binary code), MC14433 (7 / 2-bit, BCD code), etc