Chapter 6
Demo Setup
WARNING
This circuit is powered directly from the mains voltage supply. It is dangerous to touch any part of the circuit. When working with such circuits, do not connect any scope or development system without using an isolation transformer.
6.1 Hardware Setup
This section describes the setup and operation of the light ballast demo. Since the tubes are an integral part of the application, the whole demo system is considered. A photograph of the demo is shown in Figure
NOTE
The dimming level potentiometer must be set to the correct position for entry to Monitor Mode (pin PTA1 must be at logic level 1).
The dimming level potentiometer is connected to the JP2 header.
6.2 Software Setup
6.2.1 Required Software Tools
Metrowerks CodeWarrior for MC68HC08 microcontrollers version 3.0, or later, is required for developing the application.
6.2.2 Building and Uploading the Application
The application software is delivered as
The following SW versions are available:
•Hysteresis current control mode for 50 Hz— Hyst50Hz.s19
•Hysteresis current control mode for 60 Hz — Hyst60Hz.s19
•Discontinuous conduction mode for 50 Hz and for input voltage lower than half of
— DCM50HzL.s19
Dimmable Light Ballast with Power Factor Correction, Rev. 1
Freescale Semiconductor | 57 |