FYP 2(WEEK 12)

Measurement on Frequency

Resonance is a phenomenon that causes an object to vibrate when energy of a certain frequency is applied. In physics, resonance is the tendency of a system (usually a linear system) to oscillate with larger amplitude at some frequencies than at others. These are known as the system’s resonant frequencies. In these particular frequencies, small periodic driving forces even can produce oscillations having large amplitude.

Resonant Frequency

From the Figure above, we make the table and graph to collect all the data from oscilloscope. The waveform or result showed that increasing the length of the distance between transmitter and receiver coil will decreased the output frequency of coil.

The signal obtained from oscilloscope is in a sinusoidal form and it match with the theory that an electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave.

Resonant frequency only happens when the value of inductive and capacitive reactance is equal (X_L=X_C ).

Coil size = 12N,7cm;