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Audio power amplifier

Amplifiers – With semiconductor amplifying device – Including protection means
Patent

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Audio power amplifier

Amplifiers – With semiconductor amplifying device – Including protection means
Patent

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Audio power amplifier

Amplifiers – With semiconductor amplifying device – Including class d amplifier
Patent

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Audio power amplifier

Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate

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Audio power amplifier

Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent

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Audio power amplifier

Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent

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Audio power amplifier and a pre-amplifier thereof

Amplifiers – Signal feedback – Variable impedance in feedback path varied by separate...
Reexamination Certificate

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Audio power amplifier for supplying electric power to a load by

Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry
Patent

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Audio power amplifier IC and audio system provided with the...

Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate

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Audio power amplifier using virtual ground and method of...

Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate

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Audio power amplifier with automatic bias control

Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent

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Audio power amplifier with class-D push-pull output stage

Amplifiers – With semiconductor amplifying device – Including class d amplifier
Patent

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Audio power amplifier with noise prevention at turn-on and turn-

Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent

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Audio reproducing device and method, audio amplifier, and...

Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate

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Audio signal amplifier circuit

Amplifiers – Combined with automatic amplifier disabling switch means
Patent

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Audio signal amplifier circuit and a portable acoustic apparatus

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent

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Audio signal amplifier circuit and electronic apparatus...

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate

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Audio signal amplifying circuit

Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry
Patent

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Audio signal compression and expansion system

Amplifiers – Signal feedback – Amplifier in signal feedback path
Patent

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Audio signal processing circuit

Amplifiers – Signal feedback – Phase shift means in loop path
Patent

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