| 摘要 |
<p>A power supply includes a voltage regulator (12) for generating a regulated voltage in response to an input voltage and an error signal, first and second output terminals (14, 16) connected to the voltage regulator for coupling the power supply to a load (30), first and second sense terminals (20, 22) and a sensing circuit for generating the error signal. The sensing circuit includes a high input impedance differential amplifier (124) having first and second inputs (130, 132) respectively coupled to the first and second sense terminals for measuring a sense voltage between the sense terminals. The power supply may be operated in a remote sensing mode or in a local sensing mode. In the local sensing mode, no connections are required between the sense terminals (20, 22) and the output terminals (14, 16).</p> |
