目前,一般调温型电熨斗采用热双金属控温元件。由于是触点控制,使用寿命不长,对其他用电设备有干扰。本文介绍一种无触点式电熨斗调温器,设9个调温档位并具档位指示功能,可用发光二极管显示温度值。这种调温器成本8元左右,用于普通型电...目前,一般调温型电熨斗采用热双金属控温元件。由于是触点控制,使用寿命不长,对其他用电设备有干扰。本文介绍一种无触点式电熨斗调温器,设9个调温档位并具档位指示功能,可用发光二极管显示温度值。这种调温器成本8元左右,用于普通型电熨斗改调温型效果理想,还可用于电热毯调温,电灯调光。图1是本调温器工作原理。采用一块CMOS 数字集成电路 CD4017作为核心元件,十进制计数十段译码输出,有两种触发形式。当 En 端为低电平时,CP展开更多
In view of the high voltage, the strong magnetic field environment of the high-voltage switchgear, the system based on the optical wireless sensing technology, realizes the isolated contact temperature monitoring of t...In view of the high voltage, the strong magnetic field environment of the high-voltage switchgear, the system based on the optical wireless sensing technology, realizes the isolated contact temperature monitoring of the high-voltage switchgear. In this scheme, the good thermal conductivity and insulation ceramic materials were selected as the outer jacket material sensing probe, and the program had a good solution to the problem of high and low voltage isolation; The combination of the optical fiber composite insulators for wireless sensing, not only solves the problem of high voltage insulation, but also avoids the ＂creeping＂ phenomenon due to dust. The package of the structure and reasonable installation solves the cross sensitivity of strain. The application showed that the precision of temperature measurement of the system could reach ± 0.5 ℃ and could work in a variety of harsh environments. It could improve the reliability of the operation of the electrical equipment significantly and has considerable practical value for the whole power system.展开更多
文摘目前,一般调温型电熨斗采用热双金属控温元件。由于是触点控制,使用寿命不长,对其他用电设备有干扰。本文介绍一种无触点式电熨斗调温器,设9个调温档位并具档位指示功能,可用发光二极管显示温度值。这种调温器成本8元左右,用于普通型电熨斗改调温型效果理想,还可用于电热毯调温,电灯调光。图1是本调温器工作原理。采用一块CMOS 数字集成电路 CD4017作为核心元件,十进制计数十段译码输出,有两种触发形式。当 En 端为低电平时,CP
文摘In view of the high voltage, the strong magnetic field environment of the high-voltage switchgear, the system based on the optical wireless sensing technology, realizes the isolated contact temperature monitoring of the high-voltage switchgear. In this scheme, the good thermal conductivity and insulation ceramic materials were selected as the outer jacket material sensing probe, and the program had a good solution to the problem of high and low voltage isolation; The combination of the optical fiber composite insulators for wireless sensing, not only solves the problem of high voltage insulation, but also avoids the ＂creeping＂ phenomenon due to dust. The package of the structure and reasonable installation solves the cross sensitivity of strain. The application showed that the precision of temperature measurement of the system could reach ± 0.5 ℃ and could work in a variety of harsh environments. It could improve the reliability of the operation of the electrical equipment significantly and has considerable practical value for the whole power system.
