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Dongguan Jiuqi Industrial Co., Ltd.
Contact: Mr.liang
Mobile: +86-13122876672
Tel: 0769-81818179
Fax: 0769-81806179
Address: Kongwu District, Guxia, Shipai town, Dongguan city
Postal Code: 523339
website: http://www.bmlink.com.cn/
E-mail:haulwee@vip.163.com
Special purpose other power adapter
| Special purpose other power adapter |
| Using the basic principle of power adapter, many power adapters for special purposes have been developed. For example, the electronic ballast of gas discharge lamp widely used in LCD projectors, the independent ultra-high voltage voltage stabilizing circuit of cathode ray tube such as display, oscilloscope and TV, and the charge and discharge control circuit of various secondary batteries. Before the development of power adapter technology, this kind of equipment mostly USES power frequency transformer or core inductance to achieve the purpose of the requirements, its volume, cost is surprisingly large, not only consumes a lot of non-ferrous metals, and add -1-212 art is also quite complex. Taking oscilloscope as an example, the anode high voltage required by oscilloscope tube is within 4kV, and the electron beam is within lOOt~A. Even if the load current and power are extremely small, in order to avoid internal arc flyaway, the power frequency transformer cannot be too small. In the later stage, the oscilloscope tube and anode power supply mostly adopt the high-voltage dc converter composed of semiconductor tube. Current display equipment, the converter has been added to the PWM system, as a high voltage output switch voltage regulator. With the development of computer technology, more and more high to the requirement of the display, so the current output more than 20 kv ehv power adapter has been used in microcomputer monitor and some upscale CRT projector, not only make the monitor performance has greatly improved, and in protecting the anode voltage of high projection tube also plays an important role. This section introduces the composition and working principle of this kind of special switch voltage regulator. |
| | release time：2019.10.17 Source： |
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Contact: Mr.liangTel:+86-13122876672Tel:0769-81818179Fax:0769-81806179 E-mail:haulwee@vip.163.com
Address: Kongwu District, Guxia, Shipai town, Dongguan city, China Zipcose:523,339
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