| 摘要 |
<p>A constant current loop comprises an error amplifier (OPAMP) and a power supply. A first terminal of the error amplifier (OPAMP) is connected to a first terminal of a current detecting element (RSENSE), and a second terminal is connected to a second terminal of the current detecting element (RSENSE) by using a basic generating element (Rref). One end of the power supply is grounded, and the other end is connected to a source or a drain of a metal-oxide-semiconductor field-effect transistor, and the drain or the source of the metal-oxide-semiconductor field-effect transistor is connected to the second terminal of the current detecting element (RSENSE).</p> |
