Posted on 19-09-2010 by microbuzzer
As a speaker design and technical management personnel, and sometimes feel that the speaker although only a dozen small parts, but the degree of complexity troublesome than we imagine. This is because: energy conversion devices commonly encountered usually only once. Such as motor is to convert electrical energy into mechanical energy, light energy is converted [...]
Tags: design method, speaker
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Posted on 19-09-2010 by microbuzzer
Speaker is an American invention in 1925, 80 years of continuous improvement in the speaker, using a number of new materials, new processes, new structures, new adhesive, so that speakers bear the rising power of the working frequency range gradually widened, gradually reduce the distortion, short speaker technological level of development in parallel with the [...]
Tags: speaker, Speaker works
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Posted on 19-09-2010 by microbuzzer
The working principle of moving coil receiver and speaker is basically the same, it also completed the power from the electrical → sound → 2 conversion, and finally electrical energy into sound energy. And the speaker is different: the sound of the diaphragm is not directly coupled with the air, but on silent before and after [...]
Tags: coil receiver, receiver
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Posted on 08-08-2010 by microbuzzer
Recently, a client mentioned on the buzzer, speaker of the PA cavity why the overall impact of such a big sound reasons, as follows:
We know that buzzer, speaker of the PA cavity design, is often understood as follows:
1: to have sound chamber, from the PA with, as to why should tone chamber, not sure.
2: Sealing [...]
Tags: Buzzer, sound chamber, speaker
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Posted on 08-08-2010 by microbuzzer
When welding buzzer should note the following:
A, lead-free :280-290 degrees;
B, a lead :330-350 degrees;
Substrate (copper / iron / steel) General welding time: 3S
Silver surface of general welding time: 1.5S
Tags: Buzzer, Electric soldering iron
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Posted on 08-08-2010 by microbuzzer
8 ohm speaker impedance frequency
8 ohm speaker arising from the resonance in the 400Hz, its resistance increased from 8 ohms to 10 ohms, at 10KHz, its resistance began to increase, to 1MHz, 100 ohms. In the absence of the audio signal, the final output is a symmetrical square wave, although speaker impedance of 100 ohms, [...]
Tags: 8 ohm, frequency, speaker
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Posted on 08-08-2010 by microbuzzer
Buzzer Category:
1, according to the principle of sub-drive mode can be divided into: active buzzer (includes driver circuits) and passive buzzer (external drive);
Tags: Buzzer, Buzzer classification
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Posted on 08-08-2010 by microbuzzer
Buzzer resonant frequency of the piezoelectric actuator
Piezoelectric buzzer as the audio signal generator has a wide range of applications, because they are low power, voice clear and penetrating. Buzzer drive circuit or from an external drive circuit requirements oscillations in the resonant frequency of the piezoelectric element. Piezoelectric elements in its resonance frequency to provide [...]
Tags: Buzzer, Piezoelectric, resonant frequency
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Posted on 08-08-2010 by microbuzzer
Triode transistor in buzzer role is the role of the voice signal amplification. Triode is a control component, mainly used to control the current size to a total emitter Connection Example (signal from the base input, the output from the collector , emitter grounded), when the base voltage UB has a small change, base current [...]
Tags: Buzzer, Transistor's role
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Posted on 08-08-2010 by microbuzzer
The definition of the decibel value of the buzzer
DB (decibel) is mainly used for measuring short dB decibel sounds, commonly used dB that is the sound pressure level of the size of the unit.
sound pressure per doubling of sound pressure increase of 6 dB magnitude. “Sub” means one-tenth digit is a “shell”, but generally only [...]
Tags: Buzzer, decibel
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