Posted on 29-12-2008 by microbuzzer
Buzzer to rated voltage and running under normal working conditions, its consideration of that portion of the burden of the highest voltage.
Tags: Buzzer, operating voltage, rated voltage
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Posted on 29-12-2008 by microbuzzer
In order to facilitate the production of the electrical appliances industry standardization and seriation, the state provides for standard voltage range. In the design, we should choose the most suitable level of rated voltage. The so-called rated voltage, that is a by electrical appliances (electric motors, lights, etc.), generators and transformers in the normal run-time [...]
Tags: electric, rated, voltage
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Posted on 29-12-2008 by microbuzzer
Magnetic field on the current force. Current yuan | d | outer magnetic field B have been for the force F = BI | d | Ampere force direction by | d | and B by the right hand rule spiral determined the size of Ampere force F = BI | d | sina, in [...]
Tags: Magnetic, size, small
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Posted on 29-12-2008 by microbuzzer
The definition of frequency
Unit time to complete the vibration frequency of vibration of objects is described in the frequency of reciprocating motion of the volume, commonly used symbols f or v said that units of seconds -1. To commemorate the contribution of the German physicist Hertz, it is the frequency named Hertz unit, referred to as “Joseph.” Each object has its own nature by the decision had nothing to do with the amplitude of the frequency, called the natural frequency. The frequency of the concept not only in the mechanics, the application of acoustic, electromagnetic and radio technology is also commonly used. Alternating current in the unit time to complete the cyclical changes in the frequency, called the current frequency.
Tags: current, frequency, Hz, TECHNOLOGY
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Posted on 29-12-2008 by microbuzzer
frequency response refers to a constant voltage output of the audio signal is connected with the system, the speakers and buzzers with the sound pressure generated by changes in the frequency of occurrence of the increase or attenuation, phase change with the frequency of the phenomenon of sound pressure and phase associated with the frequency of the relationship between changes in frequency response is called. Also refers to the extent permitted by the amplitude of the sound system is able to playback frequency range, and in this context, changes in the volume of signals known as frequency response, also known as frequency characteristics. At rated frequency range, output voltage range of the maximum and minimum ratio to a few decibels (dB) to express its unevenness.
Frequency response in the concept of power quality is often used to describe systems or impedance measurement sensor with frequency changes…[more]
Tags: db, Frequency Response, Hz
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Posted on 28-12-2008 by microbuzzer
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Tags: Buzzer, Frequency Response
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Posted on 28-12-2008 by microbuzzer
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Tags: Buzzer, Dimensions, Mechanical
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