Parallel and series operation

In some applications, the maximum current or maximum voltage required may exceed what is available in a single power supply. Many power supplies have control circuits accessible to the user that allow the user to connect power supplies in parallel and have them equally share the load or to connect them in series and have them equally share the voltage. These configurations are called “autoparallel” and “autoseries,” respectively. Some supplies are designed to operate in parallel without the autoparallel capability. In this case, they do not equally share the load. Always check the operating manual to determine which of these features is available prior to connecting power supplies in parallel or series.