Precision power supply - Good control with high power

12-22 — elektor december 1982 precision power supply Good control with high power If any circuit is to be accurately and safely tested a good power supply must be used. It is not sufficient for it to be just a stabilised supply, it must also in- clude some form of protection against faults arising in the circuit under test. This usually takes the form of current limiting and output short circuit protec- tion. In order for it to fulfil its function cor- rectly, a power supply should have the following facilities. • The ability to deliver fairly high cur- rent levels at voltages of 24 V or more. • It must be completely stable at all output conditions. • The output must have some form of short circuit protection. • Current limiting control up to the maximum current output. • An output voltage control that is fully variable from 0 to maximum. • Accurate indication of both current and voltage output levels. • Sense inputs to allow compensation for voltage drops when lon...