Dongguan electronic equipment repair 15 years of experience in electoral enthusiasm http://www.cyx0769.com/products/weixiushebeifenlei.html Chu measured with a multimeter voltage coil is open or shorted. If so, rewinding or replacement. ③ Check the voltage loop resistance is increased. If so, re-adjust the voltage loop resistance. 2. Check the generator: ① measure generator output voltage: hand-cranked generators, high-voltage electrostatic voltmeter or digital voltmeter measure the output voltage to see if its rated voltage consistent calibration, allowing error of ± 10%. Such as the generator output voltage is too low, check whether the generator windings open or short circuit. If so, replace or rewind. ② Check whether the rectifier diode breakdown short circuit. If so, replace it. ③ Check the generator shunt capacitor is damaged. If so, replace it. ④ Check whether the governor spring is too loose screws. If so, re-adjust the spring, the spring tension. 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.