The role of the resistor in the figure is to limit the current at a higher frequency to reduce the rating of the capacitor. Resistor resistance values ​​range from 4.7 Ω to 10 Ω. In most cases, the value of the capacitor is chosen to be 0.1μF to mitigate the loading effect of the output speaker at high frequencies. As the level of the output increases, the current drawn into the "Zobel" network also increases. Therefore, the power rating of the components in the output network must be sufficient under any conditions, recommended to be 3W to 5W. Affected by the amplifier's output impedance, cable impedance and inductance, a true speaker frequency response will be unstable. The characteristics of this are more complicated than a simple parallel resistor and capacitor. This phenomenon can lead to high frequency instability. High Voltage Frequency Converter
The frequency converter takes high-speed DSP as
the control core, adopts space voltage vector control technology and power unit
series multi-level technology.With high reliability,easy operation and high
performance as the design goals,it can meet the needs of users for various
types of load speed regulation,energy saving and production process improvement
.
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