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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

Manufacturers