It is intended for decrease and transformation of an entrance alternating voltage of 42 V to an alternating voltage with the operating value 4,5 B and in the pulsing tension with average value of 4,5 Century. Output tension arrives on the divided exits marked by a sign ~ and (+,-). The source has protection against excess of entrance tension and against short circuit on output tension. It is supplied with the fork coordinated with the school socket of a laboratory table.
The source laboratory is packed into a cardboard box by overall dimensions of 270х270х170 mm.