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where the power supply exhibits the lowest impedance; and the audio signal grounding occur at a spur leading from the power supply ground. |
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If these two steps have been followed, then making a shunt regulator for a bipolar power supply becomes both easier and more efficient. |
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But before getting into the design of a shunt regulator, lets first look an alternative, passive approach. Obviously, an inductor (choke) can be added to each power supply rail. Not so obvious is that a special type of inductor, the dual winding inductor, can be used. This type of inductor comes in two styles: air-gapped and not |
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pg. 18 |
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