. Various CCFL Measurement free download

File name CCFL Measurement.pdf

CCFL Measurement Specific precautions are required for measuring the CCFL, (cylindrical) area peculiar to CCFLs are involved. Precautions and because, in addition to electrical features related to high voltage and suggestions for the measurement of CCFLs are described below for high frequency, optical features of the very small and non-planar your reference. 1 Measuring Equipment The measuring equipment (including power supply, measuring instruments, etc.) is introduced below. Fig. 15 Dedicated Power Supply NF Corp. AS114 1-1 Power Supply and Electrical Measuring Instruments (*18pF) 1-1-1 Power Supply A power supply generating 40 to 60 kHz frequency close to CCFL sine waves is generally used for CCFL measurement. Sanken uses a DC stabilized power supply combined with an inverter adapted to mA V the customer specification or a specially designed integrated power supply (NF Corporation Model AS114 cold cathode discharge characteristics testing system). The output voltages of either power supply are variable and measurement is performed after confirming (2) The circuit diagram shall indicate the manufacturer name and the that there is no variation which may affect the measurement. type number of measuring instruments in use. When a dedicated power supply is used, the manufacturer name and the type 1-1-2 Measuring Instruments number shall be also indicated. The AC measuring instruments as well as instruments built-in (3) Cables connecting the instruments to the lamp shall conform to in the power supply indicate the results of measurement in the the relevant standards for cables (pressure withstand, etc.). The effective values. The standard instruments used at Sanken are listed cable length must be as short as possible to prevent leakage below for your reference. current generated by high frequency and high voltage. Current measurement: Yokogawa Electric YEW Model 2016 high-frequency AC ammeter 1-