TSP #195 - Teardown, Repair & Experiments with a GW-Instek APS-1102 Programmable AC/DC Power Source

In this episode Shahriar takes a look at a GW-Instek programmable AC/DC source with 1kVA, 200V capability. The instrument is ideal for power applications since it offers customized waveforms as well as AC+DC output. The unit shows COMMUNICATION ERROR 2 when powered which indicates an internal module-to-module fault. An X-Ray of the main processor board shows the various power supply planes and isolated sub-components communicating through optocouplers. The power supply design is reverse engineered and the fault is traced to a set of bad operational amplifiers. All broken components are replaced which restores the unit's functionality. The instrument is then tested to show some of its capabilities. www.TheSignalPath.com    / thesignalpath​​​   www.Patreon.com/TheSignalPath