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Five small green circuit boards with blue adjustment knobs, 43 by 21 by 14 mm

Vszerda

Vszerda Adjustable Buck Converter 5 Pack 3.0V-40V to 1.5V-35V 3A Gadget

SKU CH-DS08-H9341

Five compact step-down modules convert 3.0–40 V DC input to an adjustable 1.5–35 V output at up to 3 A for DIY power projects

  • Adjustable 1.5 V-35 V output fits many DIY projects
  • Wide 3.0 V-40 V input range covers varied power sources
  • Up to 3 A maximum current drives small loads
  • Blue potentiometer enables precise manual voltage tuning
  • Compact 43 × 21 × 14 mm modules save board space

Five-piece buck converter set

This pack contains five identical step-down modules that accept a DC input between 3.0V and 40V and produce an adjustable output from 1.5V to 35V. Each unit can deliver up to 3A, making the set suitable for hobbyists and engineers who need several regulators for parallel prototyping or spares.

Blue potentiometer with LED indicator

A multi-turn blue potentiometer on every board sets the output voltage; the factory default is 18V and fine-tuning typically takes seven to eight full rotations. An onboard LED lights when power is present, giving immediate visual confirmation that the module is active without extra test equipment.

Step-down only with 1.5V headroom

The converter cannot boost voltage; the input must exceed the desired output by at least 1.5V for stable regulation. Maximum output current is 3A, so loads drawing more will require a different topology, and the 43 x 21 x 14 mm footprint limits use to boards or enclosures that can accommodate those dimensions.

Highlights

  • Adjustable 1.5 V-35 V output fits many DIY projects
  • Wide 3.0 V-40 V input range covers varied power sources
  • Up to 3 A maximum current drives small loads
  • Blue potentiometer enables precise manual voltage tuning
  • Compact 43 × 21 × 14 mm modules save board space

Specifications

No published specifications for this item yet.

Questions about this item

Will the blue potentiometer wear out if I adjust the output voltage daily?

The module uses a multi-turn blue potentiometer that ships at 18 V and needs 7-8 full turns for fine-tuning; normal daily adjustment is within its design life.

At what point does the 3 A current limit engage during continuous operation?

The converter is rated for a maximum output current of 3 A; sustained loads at or above that level will trigger the built-in current-limit protection.

How hot does the 36u thick PCB get when the module runs at 3 A all day?

The 36u thick PCB and quality inductors are designed for stable high-power output, and the on-board LED indicator lets you monitor status during extended use.

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