A device for converting a very small direct-voltage signal in an alternating voltage signal

摘要

This device for the conversion of a dc voltage signal of very small amplitude in the alternating voltage signal, of the type comprising a transformer with a mid-point (1) associated with a chopper (2) to (3, 4), is characterized in that the transformer (1) and the transistors (3, 4) are arranged in a housing (15) is maintained at a very low temperature and in which is disposed a material (20) of thermal insulation of the transistors (3, 4) with respect to the rest of the casing in order to reduce the temperature fluctuations and allow the operation of these transistors by self - heating due to their control current.