🔍 Key Concepts

• Remember that a rectifier bridge is made up of four diodes in one package to convert AC to DC. • Look for a device with four power terminals usually marked for two AC inputs and + / − DC outputs. • Compare the package shapes: single diodes usually have two leads or one stud, while a bridge rectifier is often a block-like module for mounting on a chassis.

💭 Think About

• Which numbered device in the illustration has four separate terminals suitable for connecting two AC lines and two DC output leads? • Which devices look more like single diodes or transistors instead of a combined four‑diode assembly? • On actual marine rectifier panels, what kind of package shape and number of lugs do you see for the AC in / DC out connections?

✅ Before You Answer

• Count how many electrical connections each pictured device has; a bridge rectifier needs four. • Eliminate any parts that clearly look like a single diode, transistor, or LED (these will not have four heavy terminals). • Focus on the device that appears as a square or block module with four robust lugs for power wiring.