Work In Progress!

Characterising a Bandpass Filter

vlabtool v2 bandpass

The PIC12F1572 based sine wave generator was used to sweep the input signal frequency of an active bandpass filter I made. Both the input and output were monitored using the device’s oscilloscope. Scipy was used to fit the waveforms to a sine function and extract parameters.

Extracted Amplitude and phase were plotted against input frequency.

This is the only picture I have. I made the connections properly, but later.

The PIC based waveform generators were later replaced with AD9833 DDS chips which offered 28-bit frequency resolution, and 12-bit phase control in addition to other features such as FSK capability

Introduction

Bode Plot experiment

I2C sensor add-ons

Tinkering with 555, IR and distance sensors

Amplitude Modulation with AD633