AMPLITUDE STABILISATION OF STIMULATION SIGNAL FOR MICROWIRE SENSOR

Abstract

Circuits of automatic volume control (AVC) are widely spread and often used in electro-technical practice. Its usage brings more advantages like increasing of stability of circuits, for example. The instability is mostly caused by change of temperature of components in the measurement circuit. The use of the AVC ensures repeatability of the measurement in long term point of view. The selected implementation of the AVC circuit into the existing device is discussed in the article. The customized device is the source of stimulation current signal which can be used for generating of precise magnetic fields. Parts of the AVC circuit are described together with their implementation to the customized device. Fundamental/Initial measurements of AVC static characteristics were realized on the customized device prototype.