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 (XL=XC ).
Coil size = 12N,7cm;