DATE: 5/9/2019
SUPERVISOR: SIR SHAH RIZAILLI BIN MUKHTAR
👉 CONSTRUCT CIRCUIT
Activities
Figure 1: Filtering Circuit
- After doing the first testing, it is observed that the sound sensor can detect sound even from a longer distance. So, I decide to do the filter for the sound by constructing bandpass filter circuit. The function of filtering circuit also to get a smooth waveform signal as it appeared on the oscilloscope.
- Frequency range between 3kHz to 5kHz based on testing using syringe pump.
- So, resistor and capacitor used are:
- R1= 2.4Kohm C1= 22nF
- R2= 1.4Kohm C2= 22nF
- Op amp LM741 is used in order to construct this circuit.
- However, I did not test this circuit on syringe pump yet.
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