User Guide

PAMS
Technical Documentation
RAE-5
4. User Interfaces
Page 4 – 17
Issue 1 04/02
The piezo transformer part is soldered onto a FPC with the CCFL.
Piezo transformer characteristic Value
Input voltage 8Vrms Max
Output power 1 W max
Output voltage 200 Vrms min
Output current 4.5mA
Operating current 1.5mA nominal
Operating frequency 130 +/– 10 kHz
The CCFL lamp is 2.6mm outer diameter and 1.8 mm inner diameter Double
tube.
CCFL lamp characteristic Value
Operating frequency 150 kHz (typ.)
Starting Voltage About 500 Vrms
Operating Voltage 200 Vrms
Tube current 1 mA min , 3mA max
Operating current 1.5mA
CCFT Lamp and Piezo unit I078 par no. 4850183
Figure 4. CCFT Lamp and piezo unit reference number
PDA LCD Power circuit
PDA LCD power circuit generates the bias voltages necessary for the PDA dis-
play panel. Block diagram below.