電視用變頻器 的英文怎麼說
中文拼音 [diànshìyòngbiànbīnqì]
電視用變頻器
英文
television frequency converter- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 視 : Ⅰ動詞1. (看) look at 2. (看待) regard; look upon 3. (考察) inspect; watch Ⅱ名詞(姓氏) a surname
- 用 : Ⅰ動詞1 (使用) use; employ; apply 2 (多用於否定: 需要) need 3 (敬辭: 吃; 喝) eat; drink Ⅱ名...
- 頻 : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 電視 : television; t. v. ; teevee
-
300 75 balun for fm and tv broadcast receiver
調頻電視廣播接收機用300 75平衡-不平衡阻抗變換器This paper describes mainly system functions, measuring methods, circuit design, software program and errors analysis of a new type of measuring instrument. this instrument can measure and monitor electric parameters in single - phase circuits, three - phase ( three - wire or four - wire ) circuits. this system can be applied to electric devices and power plants, transformer substations with harmonic pollution. it can measure current, voltage, power, energy, frequence, power factor etc. it also can detect load quality, phase sequence, alarm, display and print results, as well as detect and dispose negative power
該儀器適用於含有諧波污染情況下的機電設備現場、發電廠、供電局、企業變電所現場,可用來測量電流、電壓、有功功率、無功功率、視在功率、有功電能、無功電能、視在電能以及頻率和功率因數等電參數,並具有負載性質(感性、容性)判別,正、逆相序判別指示功能;超限報警功能;列印記錄功能和負功檢測及處理功能。Due to the sole - designed of the low voltage startup and power testing, for combined with the other four modules, we built the hardware and software flats, it was also convenient for continued extension. but, if there was different system wanted to combined in this system, we must redesigned all the hardware and software, it was a very hard work and could bring incompatibility. for this instance, the text designed a suit of number discriminating embedding system
但是如果有不同類型的系統也要增加到本系統中的話,就需要重新設計軟硬體,工作量很大,還容易產生不兼容等問題,針對這種情況,本文設計了一套數字識別的電器安全測試嵌入式系統,可以面向多臺儀器裝置,不採用電氣的連接,即是不改變原來的儀器裝置,通過電壓耦合元件攝像頭和視頻捕獲卡從測量儀器的顯示屏幕獲取測試信息,再把信息傳送到原來系統,從而組成了一個新的系統。The inverters based on space - vector pwm technique have many good qualities, such as less pulsating torque, higher usage of dc bus voltage, less switching loss, better high - speed regulation performance, so it is applicable for the high - performance motor control system
電壓空間矢量pwm技術( svpwm )將逆變器和電動機視為一體,由之控制的變頻器具有輸出轉矩脈動量低、直流電壓利用率高、開關損耗小、高速調速性能好等優點,適用於高性能電機調速控制系統。The three - tank control system is consisted by two kinds of controlment that are the liquid - level control and temperature control. different control had different character, so we use different control strategy. in order to gain good quality of water level, we use fuzzy control strategy. in order to control the temperature of tank t2 quickly and smoothly, we use fuzzy pid strategy. at last we draw a interface of man - to - machine using rsview32, from which we can monitor the process in industry
溫度控制採用模糊控制演算法,液位控制採用模糊pid控制演算法。最後用rsview32編制了一個人機界面,可以從此界面中監視生產過程的運行情況。三水箱計算機變頻控制系統採用變頻器進行電機調速后,耗費電能大大降低,同時由於控制策略選擇適當,系統運行比較平穩。This paper realized frequency modulation using the video signal to directly control the resonance loop ' s diode of the vco at the early stages, and then through using radio frequency bipolar junction transistor, designed a lc voltage controlled oscillator which was emulated by advance design system. in addition, it also implemented the design and debugged the hardware circuit
本文第一次實驗採用視頻信號直接控制vco諧振迴路變容二極體的方式實現頻率調制,並且利用射頻雙極性晶體管( bjt )設計了一種lc壓控振蕩器,通過ads軟體進行了參數模擬,最後進行了硬體電路的製作和調試。Power adapters and transformers by the company, with their excellent quality and performance, can meet the customers ' requirements in a great range of domains including charging sources of cell - phones, power supplies of portable computers, telephones, instrument as well as related acoustic and audio engineering
本公司提供的電源適配器和電源變壓器適用於手機充電器電源、手提電腦電源、電話、儀表儀器以及配套音響工程和視頻工程,可滿足客戶提出的產品特性和質量要求。分享友人