Eaton Corporation

Square D Company

Aeg Schneider Automation

Richard R Sabroff

Herman P Schutten

Donald L Van Zeeland

Donald R Janke

Richard C Born

Frank A Knopf

John A Anderson

A combination input/output (I/O) module for a microprocessor based device is disclosed. The combination I/O module includes a combination point which is operable as either an input point adapted for coupling to an input device, an output point adapted for coupling to an output device, or both. The combination I/O module provides continuous sensing of the presence or absence of the output device. The combination I/O module includes a triac and provides for continuous sensing of the conductive state of the triac.

Input/output module having a combination input/output point

A switching regulator power supply has multiple regulated and isolated voltage outputs. This is accomplished without the use of separate voltage regulators for each output voltage or extra transformer windings in the input circuitry of the power supply. Instead of an inductor, the primary winding of a transformer is used as the inductive component required in switching type regulators and is connected in series with the first output voltage. The secondary winding provides an isolated second output voltage. The primary to secondary turns ratio of the transformer determines the magnitude of the voltage.

Switching regulator with multiple isolated outputs

An A.C. electric power usage measuring and display system using microcomputer based digital processing. Power usage pulses optically sensed from a watthour meter rotary disc and time pulses sensed from the 60 Hz A.C. power line are input to a microprocessor that is programmed to calculate and display the day of the week 1 to 7, the time of day on a 24-hour clock basis, the total watthours and kilowatthours since the start of a billing period on a decimal basis, the peak interval watthours and kilowatthours on a decimal basis, the peak interval start time and end time on a 24-hour clock basis for a peak interval of predetermined time, the peak power demand in kilowatts on a decimal basis, the day of the peak demand on a weekly 1 to 7 basis, the time of the peak demand on a 24-hour clock basis, and the present demand in kilowatts on a decimal basis. This data is displayed in sequence along with a reference decimal number 1 to 12 on an electronic display built into the meter and visible through the glass cover thereof.

Digital processing system for time-of-day and demand meter display

Growing community of inventors

Lake Mills, WI, United States of America

Richard R Sabroff