trouble getting Adjustable Voltage Regulator to adjust voltage

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Sebastian
July 25, 2020 at 10:08 pm

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#41829 Reply |

I bought a “Adjustable Voltage Regulator, DROK DC to DC 5.3V-32V to 1.2V-32V Power Supply Module, 12A LCD Step Down Volt Transformer 160W CC CV Buck Converter Reducer” from Amazon. But I can’t adjust the output voltage with the potentiometer. I’ve tried turning it multiple times but it doesn’t do anything. When I connect the input to a wall-wart I can adjust the voltage, but when I connect it to my solar panel, it turns on but I can’t adjust the voltage. Any ideas about what’s wrong?

This is the link to the one I bought: https://www.amazon.com/gp/product/B078Q1624B/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

Drok
Keymaster

July 27, 2020 at 10:03 am

Post count: 2971

#41945 Reply |

Hello Sebastian,

Could you please tell us how much the input voltages respectively？ Would you like to show us how it is by video?

You can send video link here or send attachment to servcie@droking.com

Best regards.

Sebastian
July 29, 2020 at 8:55 pm

Post count: 0

#42132 Reply |

The wall wart was outputting 5 volts to the regulator and the solar panel was outputting 18 volts into it. I also tried attaching it to a 9 volt battery and it did the same thing as the solar panel: it turned on but I couldn’t adjust the voltage.

Drok
Keymaster

July 30, 2020 at 3:12 am

Post count: 2971

#42152 Reply |

Hello Sebastian,

If input is below 5.3v, led can’t display accurately voltage/current. Did you check output with other meter when input source is wall wart?

To check it further, woluld you like to show us how it is by video?

Does the preset voltage not change completely along with your adjustment？

Best regards,

DROK
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Viewing 4 posts - 1 through 4 (of 4 total)