Voltage control utilizing multiple PWM patterns
摘要
說明書
However, the current provided to a device can change rapidly depending factors that may be external or internal to the device. For example, a power surge on the electrical system feeding the device (e.g., the electrical utility grid, a back-up home electricity generator) may force additional current to the device, which increases the voltage of the power delivered. Similarly, a large, sudden draw of current on the same electric circuit that feeds the device (e.g., when turning on a large air-condition condenser) may temporarily cause the voltage throughout the circuit to drop. The amount of electricity demanded by a device can also change suddenly. For example, if a computer processor transitions from idle to intense activity, the current demanded by the processor will increase rapidly. Due to the finite output impedance of the processor's power supply, this increase in current may also cause a temporary dip in voltage of the current delivered to the processor. The magnitude of the voltage dip would be determined by the impedance of the power supply.
