Accession Number : ADD011221

Title :   Programmable Digital Temperature Controller Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Veneklase,B J

Report Date : 31 Jul 1984

Pagination or Media Count : 9

Abstract : A programmable digital temperature controller apparatus utilizing a pair of binary-coded decimal units and a switching unit to generate a ten bit binary word which represents a pre-selected temperature in a temperature range. A pair of erasable programmable read only memory units store digital temperatures and temperature range information. The ten bit binary word determines which digital data from the memory units will be applied to a D/A converter unit and a pair of multiplexer units. One multiplexer unit controls the voltage per bit within the D/A converter unit while the other multiplexer unit generates a starting voltage. The output voltage from the D/A converter unit and the starting voltage are summed together to provide a voltage output signal which represent the pre-selected temperature. (Author)

Descriptors :   *Patents, *Temperature control, *Digital systems, Inventions, Read only memories, Digital to analog converters, Binary processors, Multiplexing, Switching, Voltage, Input output processing, Signals

Subject Categories : Computer Hardware
      Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE