Automatic Measurement of Power Supply Load Current Using Programmable Overcurrent Detector
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Many new power supply designs include a method of remotely programming overcurrent protection. This is typically done by the inclusion of a digital-to-analog converter in the power supply and controlling the converter from an external processor. Increasing the range of the programmable overcurrent detector so that it extends downward into the normal operating current of the circuitry allows the measurement of current demand for electronic circuitry. A method of measuring the current automatically is described in the following. As seen in Fig. 1, the range of the programmable overcurrent detector is increased such that it extends downward into the normal operating current of the circuitry. When the proposed method is implemented (Fig.