Spectroanalytical Generators “Sharovaya Molniya”: Upgrading and Diversification

Abstract

A brief overview of the new electric arc and spark discharge generators of ShM series (“Sharovaya Molniya”) developed at the “VMK-Optoelektro nika company” over a period of 2011 -2016 and designed for atomic-emission spectral analysis is presented. A number of hardware changes that improve characteristics of existing generators are considered. In addition to well-known ShM-40 and ShM-250 generators, lightweight modifications of ShM generators have been developed and manufactured (mainly for the laboratories of educational institutions). “Sharm” arc generators have the same parameters as ShM-40 with an arc current of up to 20 A. “SKAT” spark generators forms a spark discharge of a positive polarity with the parameters similar to those of ShM-250. ShM-20 arc generators form an ac arc discharge (frequency 25 kHz) and dc arc discharge with a current up to 20 A. The generator control system has been upgraded using advanced microcontrollers to extend the capabilities of the devices and improve their performance.