METHOD FOR POWER SUPPLY OF A HOLLOW CATHODE LAMP AND DEVICE THEREFOR

摘要

The invention refers to atomic absorption spectrometry and may be used in spectral instrument engineering. The object of the invention is to increase the radiation stability of a hollow cathode lamp at short current pulses. The object is solved by that in the method for power supply of a hollow cathode lamp the pulse rise time though the lamp is set not less than the time of forming of an electronic space charge and not longer than the discharge time in the lamp. Another object of the invention is a device comprising a former of synchronizing pulses, sequentially bounded control amplifier, regulating element, hollow cathode lamp with power supply, current sensor loaded by the output at the input of the control amplifier. It also further comprises a device for controlling the rise time of synchronizing pulses, where the input of said device is connected with the output of the former of these pulses, and the output is loaded at the input of the control amplifier. The device is designed with a possibility to set up the synchronizing pulse rise time not less than the time of forming of an electronic space charge and not longer than the discharge time in the lamp.