Grounding structure and grounding method of vacuum tube audio amplifier
AssigneeEchowell Electronics Co., Ltd.
InventorHsi-Hsien Chen
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Abstract
The invention provides a grounding structure and a grounding method for a vacuum tube audio amplifier, the grounding structure and the grounding method including: with respect to a power source, utilizing a power circuit without a choke, an anti-coupling circuit, and a filament voltage regulator circuit; and with respect to the grounding method, utilizing an negative output terminal of an audio output transforming circuit or a negative terminal of a filter capacitor in the power circuit as a single ground terminal of the vacuum tube audio amplifier, and not arranging a grounding metal bottom plate therein, in order to achieve a compact, lightweight desktop model of a vacuum tube audio amplifier.
Claims14
A grounding structure of a vacuum tube audio amplifier, the vacuum tube audio amplifier being used for providing an output signal according to an input signal and comprising a power circuit to supply power to a vacuum tube amplifying circuit and an audio output transforming circuit, the vacuum tube amplifying circuit amplifying the input signal and transmitting it to the audio output transforming circuit, the audio output transforming circuit providing the output signal to a loudspeaker, the grounding structure for the vacuum tube audio amplifier being characterized in that:
- the vacuum tube audio amplifier uses a negative output terminal of the audio output transforming circuit or a negative terminal of a filter capacitor in the power circuit as a single ground terminal;
- the single ground terminal is not coupled to a grounding metal bottom plate;
- and
- through a filament voltage regulator circuit, supplying power to a filament of a vacuum tube in the vacuum tube amplifying circuit;
- wherein a positive terminal of the filter capacitor is coupled to a positive terminal of an output voltage of the power circuit, and an inductance value of the filter capacitor is greater than 100 uF.
A grounding method of a vacuum tube audio amplifier, the vacuum tube audio amplifier being used to provide an output signal according to an input signal and comprising a power circuit for supplying power to a vacuum tube amplifying circuit and an audio output transforming circuit, the vacuum tube amplifying circuit amplifying the input signal and transmitting it to the audio output transforming circuit, the audio output transforming circuit providing the output signal to a loudspeaker, the grounding method including:
- using a negative output terminal of the audio output transforming circuit or a negative terminal of a filter capacitor in the power circuit as a single ground terminal of the vacuum tube audio amplifier;
- not coupling the single ground terminal to a grounding metal bottom plate;
- and
- configuring a filament voltage regulator circuit for supplying power to a filament of a vacuum tube in the vacuum tube amplifying circuit
- wherein a positive terminal of the filter capacitor is coupled to a positive terminal of an output voltage of the power circuit, and an inductance value thereof is greater than 100 uF.
Dependencies are inferred from the claim text.