Undesired Background Subtraction in a Logarithmic Count Rate Meter Circuit

Background compensation can be accomplished by simple subtraction of a background signal in the linear count rate meter. However, in the logarithmic count rate meter circuit (Cooke-Yarborough type), compensation must be accomplished by subtraction from each section of the logarithmic circuit before summing the outputs of the sections. The method is described and mathematically justified in the following article.