| 摘要 |
PURPOSE: A power supply unit of a variable load active type amplifier is provided to obtain a maximum output from a speaker by outputting the maximum output corresponding to a resistance value of a speaker load. CONSTITUTION: A power supply unit(400) of a variable load active type amplifier includes a power converting part(411,412), a data table(420), and a control part(430). The power converting part converts a power supplied from a power supply part(100) into a necessary power according to a control signal. The data table stores a supply power data corresponding to a load resistance value of a speaker(300) connected to an amplifier(200). The control part receives the load resistance value. The control part accesses the supply power data corresponding to the load resistance value from the data table. The control part outputs a control signal to the power converting part in order to supply the supply power data to a load. |
