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LM317 AC/DC Adjustable Voltage Regulator Step-down Power Supply Module with LED Display

LM317 AC/DC Adjustable Voltage Regulator Step-down Power Supply Module with LED Display

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Stock in: china


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This adjustable regulator module with AC or DC voltage input, the output voltage is 1.25V-28V DC continuously adjustable, versatile for DC board. 

Adjustable regulator module with LED display.
2A or less can be loaded,  AC or DC voltage input.
The output voltage is 1.25V-28V DC continuously adjustable, versatile for DC board. 
Using double adjustment potentiometer to ensure good contact, effectively protect the load. 

The minimum differential between input and output is 3V; the input must be higher than the output voltage above 3V to be regulated.
Buck, not boost, when input 5V output 1.25-2V, not 6V.

Input Voltage: DC: 0-30V; AC: 0-22V
Output Voltage: DC 1.25-28V
Output Current: 2A(Max.)
Size: 62 * 59 * 27mm / 2.44 * 2.32 * 1.06in (L * W * H)
Weight: 42g / 1.5oz
Package Weight: 47g / 1.66oz

Package List:
1 * Voltage Regulator Module 


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Customer Reviews

Average Rating:


based on 31 Customer Reviews

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  • By d***o

    April 18, 2018

    Nice, fast, and smooth transaction. Thanks!

    Is this helpful? (0) (0)

  • By t***y

    April 13, 2018

    Fast shipping, thanks.

    Is this helpful? (0) (0)

  • By v***r

    February 22, 2018

    Thank you for making this a quick and pleasant transaction!

    Is this helpful? (0) (0)

  • By c***e

    February 18, 2018

    Fast shipping, accurate description, excellent product

    Is this helpful? (0) (0)

  • By m***c

    January 17, 2018

    Packed well and shipped quick.

    Is this helpful? (0) (0)

  • By h***e

    January 10, 2018

    Fast,received before scheduled date as promised,will do business again.

    Is this helpful? (0) (0)

  • By k***g

    December 30, 2017

    Hervorragende Stabilisierung der Spannung auch bei Belastung

    Is this helpful? (0) (0)

  • By l***7

    December 24, 2017

    Just what I needed works great Delevery was slow due to Christmas rush thanks!

    Is this helpful? (0) (0)

  • By f***b

    December 12, 2017

    Ok bonne transaction

    Is this helpful? (0) (0)

  • By j***a

    December 8, 2017

    Fast service. Great condition. Highly recommended.

    Is this helpful? (0) (0)

  • By j***s

    November 23, 2017

    Item as described. Fast shipping.

    Is this helpful? (0) (0)

  • By t***6

    November 19, 2017


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  • By b***y

    September 6, 2017

    good price fast shipping great product

    Is this helpful? (0) (0)

  • By l***k

    July 10, 2017

    thank you it came on time

    Is this helpful? (0) (0)

  • By g***n

    January 6, 2016


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  • By g***a

    December 22, 2015

    tutto OK ottimo venditore

    Is this helpful? (0) (0)

  • By b***v

    December 21, 2015

    very well,good condition,Iam very happy with the product

    Is this helpful? (0) (0)

  • By o***0

    December 19, 2015

    Great seller, package arrived in perfect conddition. I am very pleased.

    Is this helpful? (0) (0)

  • By s***n

    December 17, 2015

    Display needs to be above several volts and less than 3 volts from input to work

    Is this helpful? (0) (0)

  • By a***0

    December 16, 2015

    Venditore serio, professionale e molto veloce nella spedizione. Consigliatissimo

    Is this helpful? (0) (0)

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