Two test way for High Frequency Adjustable Reference Ballast（25KHz）

HCS-109A has two functions: one is high frequency ballast; second is high frequency digital power meter. As above picture show, after we connected instrument with test samples, high frequency constant power source will output high voltage to start test lamp (tube), high frequency constant power source output frequency range is 20KHz-26KHz, it can provide continuously adjustable current 100mA-500mA. The obvious disadvantage of IEC equivalent test method(constant current test method) is high frequency constant power source will output internal impedance, and mass output impedance will cover normal electronic parameters of test standard lamp (tube), the accuracy tolerance around 5%-30%. This system is main for small test lab and tube manufactures.

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