PC and microcontroller based automated instrument for measuring frequency response of operational amplifier active filters
Date
5-2007
Degree
Bachelor of Science in Applied Physics
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Nelio C. Altoveros
Abstract
An automated frequency response measurement device for testing operational amplifiers active filters was designed and constructed. The instrument was constructed to automatically generate sinusoidal signals, measure the corresponding amplitude response and output via personal computer (PC). The device was designed to generate waveform signals from 10MHz with 10 points per decade. Calibration results show that the automation of the signal generator has percentage difference of 5% to its actual value with percentage deviation of less than 1%. However, errors on peak detection at higher frequency and attenuation of signals of the signals generator reduce the frequency limit to IMhz. A single pole high pass and low pass filter was implemented to test the function of the device. Results show that the device was able to generate plots similar to the pones generated using a function generator and oscilloscope. Standard deviation in the measurement of peak voltages was found to range from 0 to 15mV.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Recommended Citation
Fernandez, Ian Quino DG, "PC and microcontroller based automated instrument for measuring frequency response of operational amplifier active filters" (2007). Undergraduate Theses. 10397.
https://www.ukdr.uplb.edu.ph/etd-undergrad/10397
Document Type
Thesis