检测电路接收第二时钟讯号和第一集成电路芯片所输出的第一时钟讯号，以产生一比较讯号。
The test circuit receives the second clock signal and the first clock signal outputted by the first IC chip to generate a comparable signal.
同时，采用专用芯片SG3525来产生脉宽调制电路，由IR2110组成的驱动电路来驱动绝缘门极双极晶体管（IGBT）。
Special chips, such as SG3525 and IR2110 are also used to generate PWM and to drive the IGBT.
本文利用最常见的用于电源的PWM电压调节芯片TL494，设计成直流电机调速控制电路。
This paper makes use of ordinary power supply chip TL494, which having characteristic of PWM output, DC motor speed-varying control circuit has been designed.
它由单片机芯片s3f 9454和DTMF芯片PCD 3311组成硬件电路。给出了其详细的硬件电路图和软件流程图。
Its hardware circuit is mainly constituted by single chip S3F9454 and DTMF chip PCD3311. The detail hardware circuit plans and software flow chats are also given.
本文设计的地面信号处理电路由信号放大、混频、滤波和解调电路四部分构成，本文重点对采用MAX274集成芯片和滤波电路进行了分析和设计。
The received circuit is make up of magnify, mixing, filter the wave and demodulation circuits. MAX274 chip and wave filtering circuits is designed in detail.
脉宽调制信号由PWM专用芯片UC3875组成的脉宽调制电路产生。
The signal of PWM is produced by the circuit which is composed of the chips UC3875.
必须将电路设计成具有从芯片外部能控制和能观察的，而在成本和时间预算上不超出我们的目标。
We have to make the circuitry observable and controllable from outside the chip, without exceeding our cost goals or overrunning our schedule.
分别介绍了主控制器电路、串口扩展电路、RS- 485集成收发器等的设计方法，以及电路芯片的选取。
The design methods of main controller circuit, serial port expanding circuit, RS-485 integrated transceiver, etc., are introduced as well as their chips.
分别介绍了主控制器电路、串口扩展电路、RS- 485集成收发器等的设计方法，以及电路芯片的选取。
The design methods of main controller circuit, serial port expanding circuit, RS-485 integrated transceiver, etc., are introduced as well as their chips.
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