Regulator power supply circuit with adjutable power which is formed by L431

Published:2011/9/15 20:02:00 Author:leo | Keyword: Regulator, power supply, adjutable power | From:SeekIC

As the picture 1 shows, this is regulator power supply circuit with adjustable power. Its output voltage can reach 36 V and the current can reach 0.1 mA. Its dynamic resistance is 0.22ohm. The picture 2 shows the classic applying of the TL431. The voltages of pin 2 and pin 2 V are the value getting from the format :2．5x(R2十R3)V／R3.If the value of R2 is changed, the output base voltage will also be changed. And the picture 3 shows the classic application of the adjusting tune formed by the base voltage and driving MOFET k790, which can output about 6 A current. This circuit is a simple and safe regulator power supply one.



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