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- W ( Watt ): A watt = a voltage
x an ampere. For example, 330 Watt= 110V x 3 A.
- V ( Volt ): V is the unit
of voltage, when it needs one joule of work to sent one coulomb of electric
from one point to another point, then the potential difference between
these two points is one voltage. „Q
- Ohm: Ohm is the unit of
impedance in electronics, the higher the impedance is, the less electric
current can pass through. „Q
- Hz( Hertz): The frequency
of the sound waves vibrate every second. For instance, 100Hz means 100
times vibration in one second.„Q
- dB ( Decibel): dB is the
unit of the sound pressure level, which is calculated with logarithm,
because the susceptibility to the sound of human ears is not linear.„Q
- Fo ( Resonance Frequency):
Fo stands for the resonance point of the speaker. The lower the Fo is,
the efficiency of the low frequency is better. „Q
- S.P.L. ( Sound Pressure
Level): The volume of the sound. „Q
- Vo-p: The measurement from
Vo to the peak, to drive the magnetic buzzer, the waveform is 1/2 square
wave. „Q
- Vp-p: The measurement from
peak to peak, to drive the piezo buzzer. The waveform is square wave.
+886 2 8866-5255 ext. 200 Michael Mail
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