论文部分内容阅读
光谱分析中要求对燃弧时间及有关功能动作进行自动控制,以减小劳动强度,提高工作效率和摄谱质量,确保光谱分析的精度。目前光谱分析中所使用的燃弧时间控制器如B2K-65型、SY-2型之类都是采用钟表式,凸轮铜环转盘式等机械装置来定时及控制有关功能动作的。但是,这类有触点的开关接触装置存在一定的缺陷,在使用中往往有颤动,接触不良,产生火花,容易损坏,使开关动作不稳定,燃弧时间忽长忽短,可靠性较差,影响摄谱质量。我们在研制“射流水平电弧光谱分析法”中,需用控制功能较多、工作可靠的控制器。为此参考有关文献,利用晶体管开关电路的优良特性和晶体管作反相器的特点,经过反复试验,研制成功了晶体管式的EM-1型电弧时间自动控制仪。经两年来的实际使用,表明该仪器
Spectral analysis requires automatic control of arcing time and related functional actions to reduce labor intensity, improve work efficiency and spectral quality, and ensure spectral analysis accuracy. Current arc analysis used in arcing time controller such as B2K-65-type, SY-2-type are used to watch, cam-ring copper ring and other mechanical devices to timing and control the function of the action. However, such contact-equipped switch contact devices have certain drawbacks, such as chattering, poor contact, sparks, and damage easily during use, which make the switch unstable and the arcing time suddenly short and short, and the reliability is poor , Affect the quality of the picture. We are in the development of “Jet Horizontal Arc Spectroscopy”, the need to control more functional and reliable controller. For this purpose, reference is made to the related literature. By utilizing the excellent characteristics of the transistor switching circuit and the characteristics of the transistor as an inverter, a transistor type EM-1 arc time automatic controller was successfully developed after repeated tests. After two years of actual use, that the instrument