Relevant knowledge of dif人月ferent high-voltage coils

Release time:2020-01-06 15:05 Browse times:559


The correct name of high voltage coil請裡 is circuit output tr長海ansformer, also known as circuit co科我il or circuit transfor北刀mer. The working principle 到通of the display and TV high volt懂間age coil is basically the sa錯分me. Due to the high tempera弟訊ture, high frequency, high volta雪藍ge and high current status of 水坐high-voltage coil, as well as為爸 the impact of external env河問ironmental humidity or dust, the著媽 probability of high朋拍-voltage coil damage is very high. Now錯兵 let's take a look at the classific兵山ation of high voltage 秒草coils.

1. TV high voltage c信女oil

The electron gun at the rear o熱拍f the picture tube emits thermionic el厭外ectrons. As the electric 我計field accelerates and bombards the答暗 screen, the phosphor c資草oated on the screen will glow. The f醫生aster the electron beam moves事頻, the brighter it will be. In order to 笑讀improve the electron sp相身eed, it is necessary to increase the紙明 voltage of the acceler費城ating electric field, s黃校o that the electron beam can obt靜得ain higher accelerating訊見 energy. After rectifica問懂tion, the AC output in the high voltage務有 bag first generates a high vol煙房tage electric field with the posit畫雨ive pole. The electron藍下 accelerates in this electric fi畫場eld, and the image has enough brightn內小ess.

The high-voltage coil is comm雨這only known as the circuit output transf水國ormer, and the output o那南f high-voltage DC is the 校購function of the high-voltage coil.車爸 This function is exactl筆土y the same as the high-vo得計ltage coil in the TV. When us又短ed in TV, it is used有報 to accelerate the electronic screen to船吃 achieve sufficient brigh計能tness. When used for 紅還computer LCD screen, it can supply pow我工er to the lamp to make the screen r不數each enough brightness. 去但Of course, each TV and moni弟通tor has different types of high-南報voltage coil. The maintenance pe下算rsonnel should pay attention 中愛to the model when replac唱下ing the TV high voltage coil. In th小亮is way, a series of unnecessar作民y dangers can be avoided.

2. Motorcycle high-pressure coil現物

Motorcycle high-voltage c紅拿oil, also known as ignition c窗事oil, is composed of prima計城ry coil, secondary coil and iron 務會core. When using, first cha票廠rge the primary coil, and induce 你訊200-300V voltage in the primary機國 coil; Then a high voltage of 18-討輛20kV is generated by國關 mutual inductance with the secon日商dary coil, and the ge校照nerated voltage depends on 謝文the turn ratio of the 國少two coils; Then send t國算he high-voltage power to 微吧the spark plug for ig放影nition.

The working principle of 紙業the high voltage coil 美內is to convert DC to AC through t區城he oscillator, boost the vol學了tage through the boost circuit, 通綠and then rectify it to DC high v制舊oltage. When the voltage rises to a cer為會tain value, energize the ignit話公er to ignite it.