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RD0803

1. Features

Drives 1 x 32W Spiral CFL Lamp

Input Voltage: 120Vac

High Frequency Operation

Lamp Filament Preheating

Lamp Fault Protection with Auto-Restart

Low AC Line/Brownout Protection

IRS2530D DIM8

2. Overview

The 3 way dimming system widely adopted in the US with conventional filament lamps

consists of a light bulb that has a modified Edison screw type base which allows 3

connections to be made to a special lamp socket that also has 3 connections.

Standard Edison Screw

Base

3 Way Dimming Edison

Screw Base

Neutral

Neutral

Live

Live 1 Live 2

Figure 2.1: Three way dimming Edison screw base

The 3 way dimming light bulb has two filaments inside which produce different light

outputs when connected to the AC line. These filaments are connected in series such that

the mid point goes to the line common and the two ends can be connected to the live