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Rectangular metal desktop power supply, grey finish, front panel with meter and cigarette lighter socket

Shenzhen Sky TopPower Co. Limited

Shenzhen Sky TopPower Co. Limited STP1330 13.8V 30A industrial power supply

SKU CH-JAN3-ZDW76

A 13.8 V fixed-output switching supply delivers up to 30 A for ham radios, CBs and scanners, with a noise-offset control, front 12 V cigarette-lighter socket.

  • Voltage110V
  • Amps30A
  • Fixed 13.8 V output powers ham radios and CB gear reliably
  • 30 A peak and 20 A continuous current handles high-draw amplifiers
  • Noise offset control removes pulse interference for cleaner signals
  • Front 12 V cigarette-lighter socket adds convenient portable-device power
  • circuit, over-current protection and replaceable 8 A fuse safeguard equipment

Fixed 13.8V output for radio gear

This desktop bench supply delivers a fixed 13.8 V DC output from a 110 V AC input, providing up to 30 A peak and 20 A continuous current. It is built for communication equipment such as CB radios, scanners, and HF, VHF or UHF ham radios. The unit includes a front-panel 12 V cigarette-lighter socket rated to 10 A for portable devices. A back-lit volt/ampere meter allows one-key switching between voltage and current readouts.

Input tolerance and ripple limits

The supply accepts 110 V AC ±10 % at 60 Hz and maintains output voltage regulation within 2 %. Ripple voltage stays below 80 mVp-p at rated load. Protection features include short-circuit and over-current safeguards plus a user-replaceable 8 A fuse. A built-in cooling fan prevents overheating during extended operation.

20 A continuous headroom for typical stations

Continuous rating of 20 A handles most single-transceiver setups with margin for accessories. The 30 A peak covers short transmit bursts but sustained high-power amplifiers will exceed the continuous limit. The 10 A cigarette-lighter socket suits low-draw peripherals only. The metal-cased unit weighs about 1.5 kg and measures 150 × 70 × 220 mm for bench placement.

Points forts

  • Fixed 13.8 V output powers ham radios and CB gear reliably
  • 30 A peak and 20 A continuous current handles high-draw amplifiers
  • Noise offset control removes pulse interference for cleaner signals
  • Front 12 V cigarette-lighter socket adds convenient portable-device power
  • circuit, over-current protection and replaceable 8 A fuse safeguard equipment

Caractéristiques

Voltage110V
Amps30A

Questions sur cet article

Should I pick the 20 A continuous or the 30 A peak rating for my radio?

The unit delivers 20 A continuously and can supply up to 30 A for short bursts; choose the 20 A figure for sustained loads and the 30 A figure only for brief peaks.

What does the 13.8 V fixed output mean when the supply is powering my ham radio?

It provides a steady 13.8 V DC with less than 2 % voltage variation and under 80 mV ripple at full load, giving stable power for HF, VHF and UHF transceivers.

The front panel has a 12 V cigarette lighter socket — what current can it actually handle?

The socket is rated for 10 A, so any device plugged into it must draw 10 A or less while the main terminals supply the remaining capacity.

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