Circuit for stabilising HV rectified DC power source

摘要

A circuit for stabilising the output of a rectified DC power source which has an inherent element of AC ripple can be represented as an ideal source in series with a resistor equating to an internal resistance (1) connected to a load (2). A voltage divider (3) in parallel with the load (2) provides a fixed proportion of the rectified voltage to a voltage comparator/regulator module (4), which also receives a signal from a reference source (5). The residual AC content is identified by the comparison process and a corresponding amplified correction increment is applied to the source output via the coupling capacitor (6).