Microbuzzer.com

Posted on 07-08-2010 by microbuzzer

Acoustic devices are electro-acoustic transducer is a branch, is a general term used audible sound frequency range of energy conversion, which includes the buzzer microphone, microphone, pickups, speakers, receiver and headphones and other products, In consumer electronics, communications, computers, automotive electronics and other fields have a wide range of applications. Development trend of electro-acoustic device [...]

Tags: electro-acoustic, electro-acoustic products
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Posted on 06-08-2010 by microbuzzer

Distinguish between active and passive buzzer
On the market because of their small size, a small buzzer (diameter only llmm), light weight, low price, solid structure, and is widely used in electrical equipment needs sound, electronic production and microcontroller circuits, etc. . From the exterior view, both the buzzer as the same, but a closer look, [...]

Tags: Buzzer, Buzzer difference
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Posted on 06-08-2010 by microbuzzer

Buzzer sound principle is current through electromagnetic coil, electromagnetic coil creates a magnetic field to drive the diaphragm sound, and therefore need a certain current to drive it, MCU IO pin output current is small, microcontroller output TTL level Basically, a buzzer driver can not, therefore need to increase a current amplification circuit. S51 Enhanced [...]

Tags: Buzzer, Buzzer driving
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Posted on 23-07-2010 by microbuzzer

Speaker power rating
Speaker power rating is the effective power can be continuous and steady work, that is able to withstand the long-term value of power without damage, this is the real meaning of the power of the speaker parameters, rated power unit watt (W) . Generally rated power when the test was rated frequency range [...]

Tags: maximum output power, speaker, Speakers rated power
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Posted on 23-07-2010 by microbuzzer

Speaker audio power amplifier is the voltage signal into the audio signal and drive a speaker sound equipment. PA in the PA plays an important role in the absence of power amplifiers, speakers can not burst, it has not been sound reinforcement at all.

Tags: speaker, speaker power, speaker power amplifier
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Posted on 23-07-2010 by microbuzzer

Speaker resistance
speaker  resistance is usually 4 ohms, 8 ohms, 16 ohms, 32 ohms, electronic parameters can be modified according to requirements.

Tags: speaker, Speaker resistance
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Posted on 20-07-2010 by microbuzzer

Parameters of the speaker is the speaker using a dedicated test system for testing out various performance parameters of the speaker specific values.
The common parameters include: Z, Fo, η 0, SPL, Qts, Qms, Qes, Vas, Mms, Cms, Sd, BL, Xmax, Gap gauss.
Z: is the speaker’s resistance, including: Rated impedance and DC resistance. (Unit: ohms / [...]

Tags: speaker, speaker parameters
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Posted on 20-07-2010 by microbuzzer

Speaker’s power is some of the specific technical conditions loudspeaker power amplifier obtained from the electric power introduced by the speaker unit electric power consumption, not the speaker sound power generated by unit. Obtained from the PA speaker in most of the energy converted into heat, only a small part is converted into sound. Sound [...]

Tags: power, speaker, Speaker unit
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Posted on 19-07-2010 by microbuzzer

Speaker frequency response curve
Speaker frequency response curve, which is a record in the width of 5cm or lOcm irregular curve of the continuous recording paper.
X-axis represents the input signal frequency of the speaker unit;
Y axis represents the measured loudspeaker signals at different frequencies when the sound pressure level generated.
We the human ear can hear the [...]

Tags: curve, Frequency Response, speaker
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Posted on 19-07-2010 by microbuzzer

Speaker resonant frequency
Impedance curve of the impedance of the speaker unit reaches its maximum when the first frequency corresponding to the speaker unit is called the resonant frequency or resonant frequency, called fo.
To facilitate understanding, the speaker of the vibration system can be that Cone, voice coil and the dust cover as a certain [...]

Tags: resonant frequency, speaker
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