Power Supply Tools & Directory
Find the exact calculator, connector identifier, or safety evaluator for your electrical equipment.
Adapter Compatibility Checker
The master evaluation engine. Compares voltage, amperage capacity, DC barrel dimensions (OD × ID), and polarity in real-time.
Router & Modem Adapter Checker
Verify replacement power supplies for TP-Link, Netgear, ASUS, Linksys, Google Nest, and optical fiber ONTs.
CCTV Power Supply Sizer
Calculate 12V DC power distribution box amperage for 4, 8, or 16-channel security cameras with IR night-vision LED surge.
USB-C PD & Protocol Checker
Validate USB Power Delivery profiles (5V–48V EPR), Samsung 45W PPS Super Fast Charging, and 5A E-Marker cable limits.
Laptop Charger Checker
Check replacement Dell, HP, Lenovo, Apple, and Asus chargers. Evaluates wattage, 19.5V tolerance, and central smart ID pins.
Mobile Phone Charger Checker
Can you charge your phone with a 65W/100W laptop charger? Immediate safety verdicts, speed curves, and battery protection checks.
Voltage Calculator & Drop Analyzer
Evaluate voltage tolerance compliance (±5% rule) and calculate DC line voltage loss across wire gauge (AWG) and run distance.
Current & Splitter Load Calculator
Size adapter amperage with the 80% continuous duty safety rule and sum loads for devices sharing a multi-way DC splitter.
Wattage Calculator
Calculate total electrical power output in Watts for any adapter or maximum consumption for any connected device.
Volts to Amps Converter
Determine required electrical current draw in Amperes or Milliamperes from known wattage and operating voltage.
DC Barrel Connector Finder
Interactive plug finder by Outer Diameter (OD) and Inner Pin (ID). Includes live SVG cross-section diagram and EIAJ codes.
DC Polarity Checker & Decrypter
Instantly verify DC polarity schematic symbols printed on bricks and devices to prevent instantaneous reverse-polarity blowouts.
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