Posted on 08-08-2010 by microbuzzer
Piezo buzzer mainly by multi-harmonic oscillator, piezoelectric buzzer, impedance matching device and the resonance box, shell and other components. Some piezoelectric buzzer case also equipped with light emitting diodes.
Tags: Magnetic Buzzer, Piezo Buzzer, structural principle
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Posted on 07-08-2010 by microbuzzer
Magnetic buzzer easy way to active and passive
First, visual: the former is very similar form as the county upwards of two buzzer pin placement, you can see the green circuit board is a passive buzzer, no circuit boards with vinyl A buzzer is active closed. However, this is only the preliminary judging criteria, but not [...]
Tags: active electromagnetic buzzer, Buzzer, passive electromagnetic buzzer
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Posted on 07-08-2010 by microbuzzer
Fault Analysis of Electromagnetic buzzer
1, no do not ring before installation. – This is a quality in itself is a buzzer not work (the first one kind of buzzer such cases the probability of occurrence of more);
2, after welding when no sound or sound without sound. – This situation could be used in iron welding [...]
Tags: Buzzer, Electromagnetic buzzer, Fault
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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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