Audio power source with improved efficiency
Example embodiments provide a device that includes a power transformer with a first output voltage terminal providing a first voltage and a second output voltage terminal providing a second voltage, a voltage regulator coupled to one or more of the first output voltage terminal and the second output voltage terminal, and a power storage element that stores power supplied by the second output voltage, and the first output voltage terminal supplies power to a remote entity until a load power requirement of the remote entity exceeds a threshold power level at which time the power storage element is used to provide power from the second output voltage terminal to the remote entity.
1. A device, comprising:
a controller;
a power transformer comprising a first output voltage terminal providing a first voltage (V1) and a second output voltage terminal providing a second voltage (V2) and wherein the controller is used to control an amount of voltage of one or more of V1 and V2 based on a feedback signal, wherein the second output voltage terminal is connected to a voltage regulator prior to connecting to the first output voltage, and wherein a set point of V2 is lower than a set point of V1 which causes V1 to operate prior to V2 being initiated; and
a power storage element configured to store power supplied by the second output voltage, wherein the first output voltage terminal is configured to supply power to a remote entity until a load power requirement of the remote entity exceeds a threshold power level.
2. The device of claim 1 , wherein V2 is one of a higher voltage, a lower voltage and the same voltage as the V1 voltage.
3. The device of claim 1 , wherein the power storage element is used to provide power from the second output voltage terminal to the remote entity and is directly coupled to the second output voltage terminal.
4. The device of claim 1 , wherein when the load power requirement of the remote entity exceeds the threshold power level, the V1 voltage decreases below a set point of the voltage regulator.
5. The device of claim 1 , further comprising an error amplifier and opto-coupler coupled to the first output voltage terminal.
6. The device of claim 5 , wherein the controller is coupled to the error amplifier and opto-coupler.
7. The device of claim 6 , wherein the error amplifier, opto-coupler and the controller comprise a feedback circuit which provides the feedback signal to the controller to regulate a V1 voltage level.
8. A device, comprising:
a first module comprising a first output voltage terminal providing a first voltage (V1) and a second output voltage terminal providing a second voltage (V2) and wherein a controller is used to control an amount of voltage of one or more of V1 and V2 based on a feedback signal, wherein the second output voltage terminal is connected to a voltage regulator prior to being connected to the first output voltage, and wherein a set point of V2 is lower than a set point of V1 which causes V1 to operate prior to V2 being initiated; and
a second module configured to store power supplied by the second output voltage, wherein the first output voltage terminal is configured to supply power to a remote entity until a load power requirement of the remote entity exceeds a threshold power level.
9. The device of claim 8 , wherein V2 is one of a higher voltage, a lower voltage and the same voltage as the V1 voltage.
10. The device of claim 8 , wherein the second module is used to provide power from the second output voltage terminal to the remote entity and is directly coupled to the second output voltage terminal.
11. The device of claim 8 , wherein when the load power requirement of the remote entity exceeds the threshold power level, the V1 voltage decreases below a set point of the voltage regulator.
12. The device of claim 8 , further comprising an error amplifier and opto-coupler coupled to the first output voltage terminal.
13. The device of claim 12 , wherein the controller is coupled to the error amplifier and opto-coupler.
14. The device of claim 13 , wherein the error amplifier, opto-coupler and the controller comprise a feedback circuit which provides the feedback signal to the controller to regulate a V1 voltage level.