The Sharman LM40-D is a high-current, transformer-based linear regulated DC power supply built for amateur radio and bench applications. It delivers clean, stable DC for HF/VHF transceivers and demanding accessories, featuring dual digital metering (V/A), continuously adjustable output voltage, and built-in protection for safe operation.

Full technical specifications

• Type: Linear, DC regulated

• Input: 220V AC, 50Hz (±2Hz)

• Output voltage: 1.5V – 15V DC, continuously adjustable

• Output current: 40A max / 28A continuous

• Load regulation: < 1%

• Ripple/noise: < 10mV

• Meters: Twin digital meters (Voltmeter/Ammeter – V & A)

• Outputs/connectors (front):

  • Cigarette lighter socket: 10A max

  • Terminal blocks: 3A max per pair

  • Main positive/negative terminals, main switch, power indicator, voltage adjustment knob

• Protection: Short-circuit & current limitation

• Fuse: Panel mount fuse

• Operating environment: 0–40°C, <RH80%, 86–104 kPa

• Dimensions (W×L×H): 230 × 270 × 150 mm

• Weight: 9 kg