Unbranded 13.6V DC Regulated Power Supply 115V AC In 3A Foldback Current Limit

Unbranded 13.6V DC Regulated Power Supply 115V AC In 3A Foldback Current Limit

This is an unbranded benchtop regulated DC power supply that converts 115V AC mains power to a stable 13.6V DC output. It delivers a minimum of 3 amps of continuous DC current and incorporates foldback current limiting, a protection circuit that automatically reduces both output current and voltage if an overload or short-circuit condition occurs — protecting both the supply and the connected load. Cooling is handled by a large passive heatsink mounted on the rear panel, with a power transistor (TO-3 package) bolted directly to it.

Specifications & What's Included

• Input Voltage: 115V AC
• Output Voltage: 13.6V DC (regulated and stabilized)
• Output Current: At least 3A continuous
• Current Protection: Foldback current limiting
• Cooling: Passive heatsink (rear-mounted, fins visible in photos)
• Power Transistor: TO-3 package bolted to heatsink
• Power Switch: Red rocker switch on front panel
• DC Output Connector: Front-panel barrel jack and rear red/black binding posts
• AC Input: Hardwired NEMA 5-15P power cord (standard US 3-prong plug)
• Enclosure: Black steel box chassis, benchtop form factor
• Included: AC power cord (attached)

Applications

A 13.6V DC regulated supply at this voltage is a classic choice for powering mobile/amateur (ham) radio transceivers and accessories at their nominal operating voltage — 13.8V nominal is the standard for most 12V-class radio equipment, and 13.6V falls squarely in that range. This type of supply is also used on the electronics workbench to power 12V circuits, automotive electronics under test, CB radios, RF amplifiers, and other DC equipment that would otherwise run from a car battery or a dedicated switching supply. Foldback current limiting makes it safe for use with loads that may present a momentary short at startup. Linear regulated supplies like this one produce a clean, low-noise DC output with no switching artifacts, making them preferable to switch-mode supplies in noise-sensitive RF and audio applications. This style of passively-cooled linear bench supply was common through the 1980s and 1990s and remains useful today for bench work and legacy radio equipment maintenance.