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Electronic devices with adjustable bias impedances and adjustable bias voltages for accessories

机译:具有可调偏置阻抗和可调偏置电压的电子设备,用于附件

摘要

Electronic devices may provide microphone bias voltages to accessories. The accessories may include circuitry powered from the microphone bias voltages. The output impedances and the voltages of the microphone bias voltages may be adjusted during operation of the electronic devices. An electronic device may provide a bias voltage to an accessory, may lower the output impedance of the bias voltage, and may increase the voltage of the bias voltage during operation of the electronic device. Accessories that received bias voltages with lowered impedances or raised voltage levels may exhibit greater tolerance to faults such as moisture-based shorts and may be able to continue operating even in the presence of some faults.
机译:电子设备可能会向配件提供麦克风偏置电压。附件可以包括由麦克风偏置电压供电的电路。可以在电子设备的操作期间调节输出阻抗和麦克风偏置电压的电压。电子设备可以向配件提供偏置电压,可以降低偏置电压的输出阻抗,并且可以在电子设备的操作期间增大偏置电压的电压。接收到具有降低的阻抗或升高的电压电平的偏置电压的附件可能对故障(例如基于湿气的短路)表现出更大的容忍度,即使在出现某些故障的情况下也可以继续运行。

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