Oscilloscope repair 15 years of experience specializing in election Chu enthusiasm http://www.cyx0769.com/products/weixiushebeifenlei.html instrument repair network outlined Hioki AC voltage tester voltage tester structure and composition of (1) adjusting the boost section voltage transformers, step-up transformer and boost some of the power is turned on and off switch. 220V voltage by switching on, off switch is added to the output of the regulator regulating transformer transformer step-up transformer is connected. Users only need to adjust the regulator can control the output voltage of the step-up transformer. (2) the control part of the current sampling time of the circuit, the alarm circuit. The control section when the start signal, the instrument immediately boost part of the power is turned on. Upon receipt of the test loop current exceeds a set value and audible alarm immediately cut off the power boost circuit. Upon receipt of a reset signal or time off after the boost circuit power. About Chu enthusiasm Electronic Instruments, (www.cyx0769.com) was founded in 1999, Shenzhen Branch was established in 2004, professional management of maintenance of all types of electronic machine testing, instrumentation, electronics, electrical equipment, measuring and testing equipment, environmental test Has a strong technical foundation of professional surveying support and maintenance personnel, senior engineer of the department have many years engaged in various types of electronic measuring instruments machine maintenance of rich experience, they are familiar with thousands of domestic and international instrument Institute and the original manufacturer of the device 10,000 species of measuring instruments. Chu enthusiasm, set up 10 years, the spirit of mutual benefit and development, resource sharing, service first principle, relying on the huge market of Guangdong Pearl River Delta, partners have a number of cities throughout the country and overseas, while Shenzhen, Dongguan and Hong Kong as the main three, the world famous radiation equipment manufacturers and dealers, to establish a relatively stable first-hand and very professional information resources and to goods supply system, particularly the United States Agilent, Tektronix, international brand-name equipment sales maintenance Fluke, Keithley, Teledyne LeCroy, Rohde & Schwarz, Kikusui, Hioki, Advantest, Anritsu, Yokogawa and other advantages more significant.