Replacing a Power Supply Under Microprocessor Control in an Operating System
Original Publication Date: 1985-May-01
Included in the Prior Art Database: 2005-Feb-18
An operating system design allows a defective power supply, which is microprocessor-controlled, to be removed and replaced without having to remove system power to allow the exchange. The system has the following features: 1) AC input 3 of nominal 208 VAC, range 200-400 VAC. 2) Internal bulk and bias voltages derived from AC input. 3) Microprocessor-controlled interface. 4) Mechanical connectors to allow hot bus disconnect of power supply output. 5) Microprocessor/technician interface. The power supply is configured with a multipin connector 2 (Fig. 1) to allow bus interfacing to the microprocessor, and a 208 VAC connector 3 for primary power. Output is from jacks 4, 5. Fig. 2 is a block diagram of the internal configuration of the power supply and its various inputs and outputs.