| 摘要 |
The invention relates to electronic engineering and can be used for power supply of electronic devices. A DC voltage regulator comprises a regulating element, resistor current-sensing device, control unit, differentiating amplifier and two resistors. Input of control element is connected to first input of the device, and output is connected to first terminal of resistor and first terminal of resistor current-sensing device, which second terminal is connected to first input of differentiating amplifier and first output of the device. Second terminal of first resistor is connected to first terminal of second resistor and second input of differentiating amplifier, second input of the device is connected to second output of the device. According to the invention electronic amplifier element is introduced. Input thereof is connected to the output of differentiating amplifier, first output is connected to second input/output of the device, to which second terminal of second resistor is connected, and second output is connected to first control input of regulating element. Input of control unit is connected to first output of the device, and output to second control input of regulating element. Due to exclusion of dissipation power rise at control element and facilitation of temperature mode of this element at initial stage of operation accuracy of regulator operation is enhanced, this increases reliability thereof and design is simplified. |
