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White benchtop DC power supply with 4-digit LED display and adjustment knobs

BFKK

BFKK DC Power Supply Variable White video accessory

SKU CH-WCBJ-04EFV

Adjustable 0-120V, 0-3A bench power supply with 0.001A resolution, four-digit LED display, CV/CC auto-switching, USB output, and thermal protection

  • Precise 0.001 A resolution enables fine current control
  • 0–120 V / 0–3 A range covers diverse bench tasks
  • Coarse and fine knobs simplify voltage and current dial-in
  • Automatic CV/CC switching protects loads during changes
  • Compact 9.5 × 3.4 × 6.1 in form fits tight workspaces

Bench supply with 0.001 A resolution

The BFKK DC Power Supply Variable White is a benchtop switching regulated unit that delivers adjustable output from 0 to 120 V and 0 to 3 A. A backlit 4-digit LED display shows voltage and current with a resolution of 0.001 A for precise monitoring. Coarse and fine adjustment knobs let operators dial in exact settings while automatic constant-voltage and constant-current mode switching handles load changes without manual intervention. Built-in protections include grounding, leakage, thermal, voltage overload, power overload and short-circuit safeguards.

For labs, education and DIY repair

Technicians, students and hobbyists who need a compact bench source for circuit testing, electrolyzation, electroplating, battery charging or lamp ageing will appreciate the lightweight form factor of 9.5 x 3.4 x 6.1 inches and integrated 5 V 2 A USB port. The intelligent fan activates only when the internal temperature exceeds 50 °C, keeping acoustic noise low during light loads. Users requiring higher current capacity, multi-channel output or programmable remote control should consider a different class of supply.

0.001 A display resolution drives selection

The defining specification is the 0.001 A current resolution on the 4-digit LED readout, which determines whether the unit can verify low-current behaviour in sensitive circuits. If the application demands finer resolution or data-logging capability, this model will not meet the requirement. For general bench work where milliamp-level visibility is sufficient, the resolution matches the need.

Highlights

  • Precise 0.001 A resolution enables fine current control
  • 0–120 V / 0–3 A range covers diverse bench tasks
  • Coarse and fine knobs simplify voltage and current dial-in
  • Automatic CV/CC switching protects loads during changes
  • Compact 9.5 × 3.4 × 6.1 in form fits tight workspaces

Specifications

No published specifications for this item yet.

Questions about this item

How loud does the cooling fan get when the BFKK power supply runs continuously at high load?

The intelligent thermal protection activates the cooling fan only when the working temperature exceeds 50 °C or 122 °F, and fan speed varies with load to keep noise low during extended use.

What mains lead or adapter must I already have to plug this 120 V bench supply into a UK socket?

The unit is designed for 120 V AC input, so you will need a suitable step-down transformer or a region-specific IEC power cord rated for the local mains voltage.

Will the 5 V 2 A USB port on the front panel safely charge an older smartphone that only accepts 5 V 1 A?

Yes, the USB interface delivers up to 5 V at 2 A and will automatically supply only the current the connected device draws, making it safe for legacy 1 A handsets.

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