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STD LM317 Adjustable output

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Update time: 2021-04-12 08:08:29
Creation time: 2016-03-29 05:29:37
Description
1、Module description: LM317 is a three terminal adjustable positive voltage regulator integrated circuit for National Semiconductor Corporation Ns. The output voltage range of LM317 is 1.2V to 37V, and the maximum load current is 1.5A. Its use is very simple, only two external resistors to set the output voltage. In addition its linear adjustment rate and load adjustment rate is also better than the standard fixed voltage regulator. LM317 built-in overload protection, security zone protection and other protective circuit. 2、Function Description: Wide voltage input, the output voltage can be adjusted, the output voltage can be adjusted through the potentiometer, obviously the output voltage to be lower than the input voltage, so the output voltage of several V, the input voltage to be appropriate. 3、Description of each function module: ![enter image description here][1] 4、Components and PCB diagram before welding: ![enter image description here][2] 5、Physical map after welding: ![enter image description here][3] ![enter image description here][4] ![enter image description here][5] [1]: /editor/20160415/571096d875480.png [2]: /editor/20160415/57109745c4312.png [3]: /editor/20160503/572845fa331b5.JPG [4]: /editor/20160503/572845fdd9518.JPG [5]: /editor/20160503/5728460566ebf.JPG
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ID Name Designator Footprint Quantity
1 240R R1 3-0603 1
2 20k R2 rw 1
3 SIP2 P1,P2 HDR1X2 2
4 10u C1 1uf 1
5 0.1u C2 C-0603 1
6 LM317AMDT U2 TO-252 1
7 1k R3 3-0603 1
8 LED D1 L-0603 1

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