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    • 49. 发明授权
    • Controller for FET pass device
    • FET通过器件控制器
    • US06919758B1
    • 2005-07-19
    • US10721624
    • 2003-11-25
    • Donald R. PreslarThomas J. Hayes
    • Donald R. PreslarThomas J. Hayes
    • G05F1/10G05F1/575
    • G05F1/575
    • A controller for regulating a FET to operate as a pass device including input, output and gate nodes coupled to a current path input, a current path output and the gate of the FET, respectively, a controlled low current device, and an oscillating high gain regulation amplifier. The voltage source provides a regulation voltage level relative to the input node. The low current device is coupled to the gate node and has a control input. The amplifier has a first input coupled to the output node, a second input coupled to the voltage source, and an output coupled to the control input of the controlled low current device to regulate the FET. The amplifier oscillates while regulating a voltage between the input and output nodes to the regulation voltage level. The controlled low current device presents a high impedance to the gate node to prevent oscillations from disturbing regulation.
    • 一种用于调节FET作为通过装置的控制器,其包括分别耦合到电流路径输入,电流路径输出和FET的栅极的输入,输出和栅极节点,受控低电流装置和振荡高增益 调节放大器。 电压源提供相对于输入节点的调节电压电平。 低电流器件耦合到栅极节点并具有控制输入。 放大器具有耦合到输出节点的第一输入端,耦合到电压源的第二输入端和耦合到受控低电流器件的控制输入的输出端以调节FET。 放大器在将输入和输出节点之间的电压调节到调节电压电平的同时振荡。 受控的低电流器件对栅极节点呈现高阻抗,以防止振荡干扰调节。