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AssigneeMagneti Marelli S.p.A.
InventorsJacopo Cecchin, Roberto Vettori, Davide Gonella, Alessandro Bergamini
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A solid state relay circuit arrangement for audio signals is described, of the type comprising a first MOSFET and a second MOSFET in a back-to-back configuration, adapted to receive an input signal on the source electrode of the first MOSFET and to take the output signal on the source electrode of the second MOSFET, with a driving voltage being applied to the gate electrodes of said first MOSFET and second MOSFET, apt to change, on the basis of its value, the operational state of said first MOSFET and second MOSFET, According to the invention, each of said first MOSFET and second MOSFET includes a respective bypass capacitor arranged between its source electrode and its gate electrode, having such a capacitance value to determine a bypass path for the input signal from the source electrode to the gate electrode in the operating frequency range of said input signal.
A solid state relay circuit arrangement for audio signals, of the type comprising a first MOSFET and a second MOSFET disposed in a back-to-back relationship with respect to each other and so as to receive an input signal on the source electrode of the first MOSFET and to take the output signal on the source electrode of the second MOSFET, with a driving voltage being applied to the gate electrodes of said first MOSFET and second MOSFET, apt to change, on the basis of its value, the operational state of said first MOSFET and second MOSFET, each of said first MOSFET and second MOSFET including a respective bypass capacitor arranged between its source electrode and its gate electrode, having such a capacitance value to determine a bypass path for the input signal from the source electrode to the gate electrode in the operating frequency range of said input signal.
A system for switching two or more input signals onto an output load, in particular a speaker, comprising solid state relay circuit arrangements on the path of said audio signals able to selectively interrupt said path under the control of a respective driving signal, wherein said system includes a solid state relay circuit having a first MOSFET and a second MOSFET disposed in a back-to-back relationship with respect to each other and so as to receive an input signal on the source electrode of the first MOSFET and to take the output signal on the source electrode of the second MOSFET, with a driving voltage being applied to the gate electrodes of said first MOSFET and second MOSFET, apt to change, on the basis of its value, the operational state of said first MOSFET and second MOSFET, each of said first MOSFET and second MOSFET including a respective bypass capacitor arranged between its source electrode and its gate electrode, having such a capacitance value to determine a bypass path for the input signal from the source electrode to the gate electrode in the operating frequency range of said input signal.
Dependencies are inferred from the claim text.