To get the problem solved, a protection circuit has been designed, which contains a micro-current amplifier, an absolute window voltage comparator, an ultra-range tips circuit, a UREF benchmark constant voltage source circuit, and an executive circuit.
针对这一问题，设计了一个保护电路，整个系统由微电流放大器、绝对值窗口电压比较器、超量程提示电路、UREF基准恒压源电路、执行电路构成。
Oil pressure relief valve is a control valve, and its main function is to prevent system overload, the protection circuit pump and the safety of the system and to maintain a constant pressure circuit system.
溢流阀是油路压力控制阀门，其作用主要是防止系统过载，保护油泵和油路系统的安全及保持油路系统的压力恒定。
This text takes technological process of the mobile-phone spraying as the thread, has stated the design process and principle of every main procedure control device, including conveyer system, dispel the stress and static system, spraying system, baking varnish system, constant temperature and humidity system, air supply and exhaust system, PLC I/O circuit and program.
本文以手机喷涂线的工艺流程为主线，说明了各主要流程的控制装置的设计过程及其原理，包括输送机系统、除应力除静电系统、喷房涂装系统、烤漆系统、恒温恒湿系统、给排气系统、PLC I/O口电路及程序。
At present, permanent day main supply product: Such as three base lines constant voltages IC, low pressure drop constant voltage IC, the DC-DC direct current transformation controls IC, the operation and comparison amplifier IC, a PWM kind of power source manages IC, datum reference constant voltage IC, the lithium battery protection circuit, the audio frequency actuates IC, Kara OK reverberation IC, the volume control and adjusts IC, the LCD/LED/VFD demonstration actuation, the photoelectricity pale pinkish purple, semiconductor device aspect and so on high voltage Xiao Teji, high-pressured MOS obtains is in the lead the manufacture technology.
目前，恒天主要供应产品：诸如三端线性稳压IC、低压降稳压IC、DC-DC直流转换控制IC、运算与比较放大器IC、PWM类电源管理IC、基准参考稳压IC、锂电池保护电路、音频驱动IC，卡拉OK混响IC、音量控制和调节IC、LCD/LED/VFD显示驱动、光电藕合器、高电压肖特基、高压MOS等半导体器件方面取得领先制造技术。
Agricultural engineering; measuring and controlling system of constant temperature constant wet box; design; surface circuit; frequency modulation technique; PID regulate
农业工程；恒温恒湿箱测控系统；设计；接口电路；调频技术； PID调节
It analysed the principle of Reed-Solomon encode, the design of basic unit circuit, including Galois field adder and multiplier, and addressed the application method of parallel multiplier with constant coefficients under the natural base.
分析了RS码的编码原理，基本单元电路设计，包括有限域加法器和乘法器，并着重阐述了自然基下常系数并行来法器的实现方法。
Therefore, uses the belt constant current, is composed the differential motion amplifying circuit by the multiple-unit tube, and establishes the static bias electric current is small.
为此，采用带恒流源的，由复合管组成的差动放大电路，且设置的静态偏置电流较小。
At the same time, with a constant frequency, a simple circuit, a dedicated chip, small size and low cost.
同时，具有恒频工作、电路简单、专用芯片、体积小、成本低。
It can be fathomed the signal transforms into the digit signal through the analog signal by means of analog-digital conversion utensil ADC0809, Through the combination of multi-channel analogue switch and proportion amplifier, more voltage and current range was set up. Through constant current source circuit, the resistance/voltage measure was normalized.
通过模数转换器ADC0809将被测信号由模拟信号转换成数字信号，通过多路模拟开关与比例放大器的组合设置了多个电压、电流量程，利用恒流源电路实现了电阻/电压归一化测量。
At the same time, he draws in superior-inferior coefficient, and proves that the characteristics of this circuit is better than that of constant current transistor charge mode and bootstrap mode circuit.
推荐了恒流管──自举式组合扫描电路，论述了该电路的工作原理，并且引入优劣系数，论证了其性能比恒流管充电式、自举式扫描电路的更佳。
The resonance frequency equations of the plate with different boundary conditions are derived. The equivalent mass and the equivalent compliance constant are obtained, and the equivalent circuit for the compound air coupled transducer is obtained.
对弯曲圆盘在不同边界条件下的共振特性进行了分析，给出了辐射器的共振频率设计方程、等效质量和等效弹性系数；同时研究了气介式复合振动换能器的机电等效电路，分析了复合换能器的整体频率方程。
Life: make use of constant circuit, offer steady output current, minish attenuation, ensure long life of LED for 50, 000-80, 000 hours on exterior usage environment basis
使用寿命：采用恒流电路，提供稳定的输出电流，减小衰减，保证LED的使用寿命长达5-8万小时根据外部使用环境
Based on linear current attenuation model of intrinsic safe circuits, it is concluded that maximum arc power P(subscript max is in proportion to arc energy W(subscript g and in inverse proportion to circuit time constant.
基於本质安全电路的放电电流线性衰减模型，得到最大放电功率P(下标 max与放电能量W(下标 g成正比，与电路时间常数成反比的结论。
Understanding ATM 理解ATM ATM is a cell-switching and multiplexing technology that combines the benefi ts of circuit switching (constant transmission delay and guaranteed capacity) with those of packet switching (flexibility and efficiency for intermitten t traffic).
ATM是一种信元交换和多路复用技术，它将电路交换（恒定的传输时延和容量保证）和包交换（对非持续流量的良好适应性和效率）的优点集于一身。
For the current-reversal method to be effective, it's important to use a low noise voltmeter with a response speed that is fast compared with the thermal time constant of the circuit under test.
为了使这种电流反向法有效，很重要一点是要使用响应速度比被测电路的热时间常数更快的低噪声电压表。
This design uses AT89C51 SCM chip controls the charging process, achieving A/D convert and show circuit. The battery voltage information can be detected by the external circuit to choose the correct charge mode, realizing the intelligent conversion mode of the trickle charge, the constant current charging, the constant voltage charging and the float charge.
采用AT89C51单片机芯片作为充电过程的控制芯片进行电路设计，实现A/D转换和显示电路，并根据外部电路检测到的电池电压信息选择正确的充电模式，实现在涓流、恒流、恒压及浮充电模式之间的智能转换。
In order to improve the efficiency of wire electrical discharge machining of solar silicon, a diode-resistance circuit model for P-type solar silicon WEDM was created to analyze the current properties under constant voltage power supply.
为了提高太阳能级硅材料放电切割的效率，基于理论建模的方法，将硅材料放电切割过程抽象为简单的二极管－电阻电路模型，在恒压源的作用下分析其放电电流特性。
Repairs the positive wave invertor to use the chip control, the pulse-duration modulation, the constant voltage output, has the completely automatic to protect the function reliably, the job safety stable, has the undervoltage, the overload, to press, the short circuit warm and so on many kinds of protection functions, the economy to be practical, practical in the user community.
修正波逆变器采用芯片控制，脉宽调制，稳压输出，有全自动保护功能，工作安全可靠稳定，具有欠压、过载、过压、过温、短路等多种保护功能，经济实用，实用于广大用户。
Although the power supplied to each of the three phases of a three-phase circuit is pulsating, it may be proved that the total three-phase power supplied a balanced three-phase circuit is constant.
尽管供应给三相电路中每相的功率是波动的，但是供应给平衡三相电路的总功率是不变的。
The switch frequency of the main circuit is constant, which is desirable for industrial applications.
主电路开关频率恒定，容易推广到工业和工程实际应用。