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參數(shù)資料
| 型號： | EV5103-10 |
| 廠商： | Global Mixed-mode Technology Inc. |
| 英文描述： | G5103 White LED Demo Board V1.0 |
| 中文描述： | G5103白光LED演示板1.0 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大小： | 143K |
| 代理商： | EV5103-10 |
Jan 21, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
4
EV5103-10
Global Mixed-mode Technology Inc.
How to Use This Demo Board
Fig.2
J1:
is an input power connector. +BAT means positive side. The valid voltage range is from +3.0 to
+5.5V. one cell Li-Ion battery or 3 cell NiCd or NiMH battery or adjustable power supply are good
power source.
is a push button switch, every click makes LEDs a little darker until 100% light.
is a push button switch, every click makes LEDs a little lighten until full dark.
is a push button switch, every click change dimming PWM frequency from 200Hz
210Hz
220Hz
230Hz
240Hz
250Hz
150Hz
160Hz
170Hz
180Hz
190Hz
200Hz.
But the change could not be observed be human eyes. Only a oscilloscope could shows the
difference.
is a jumper, which must be close for normal operating. You should open this jumper to measure
input current if you want to measure the efficiency of this demo board.
LED1 ~ LED4 has solder with white LED.
SW1:
SW2:
SW3:
JP1:
LEDs:
LED driver circuit only
in red rectangle
Other circuit is for
PWM dimming control
demonstration.
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