Title :
Microconverter aided time constant measurement
Author :
Da Silva, Jaidilson Jó ; Neto, Felix Rodrigues ; Filho, Manoel Alves ; Da Silva, Alfranque A. ; Barbosa, O.O. ; Wanzeller, Miguel Gonçalves ; Neto, J.S.R.
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Campina Grande, Brazil
Abstract :
A single time constant (STC) circuit is that circuit which is composed of, or can be reduced to, one reactive component and one resistance. An STC circuit formed of a capacitance C and a resistance R has a time constant τ=RC. Although an STC circuit is quite simple, it plays a significant role in the project and analysis of linear and digital circuits. In this paper, the charge time of a capacitance has been evaluated using an ADuC812 microconverter. A time measurement is obtained employing the 12 bit converter ADC0 input, and DAC0 and DAC1 outputs included in the microconverter. Several time constants were used and the results obtained were excellent.
Keywords :
RC circuits; analogue-digital conversion; digital-analogue conversion; passive networks; time measurement; ADC; ADuC812 microconverter; DAC; STC circuit; capacitance charge time; microconverter aided time constant measurement; reactive component; resistance; single time constant circuit; Analog-digital conversion; Capacitance; Capacitors; Counting circuits; Digital circuits; Electric resistance; Equations; Signal generators; Time measurement; Voltage;
Conference_Titel :
Electronics, Communications and Computers, 2004. CONIELECOMP 2004. 14th International Conference on
Print_ISBN :
0-7695-2074-X
DOI :
10.1109/ICECC.2004.1269570
