??? 08/24/05 08:50 Read: times |
#99947 - I need help with LED Driver |
Hi,
i want to drive 4 LED´s (~25mA) with 4 portpins of a Atmel 8051. I found this circuit in the archive(http://www.8052.com/forum/read.phtml?id=64233), but my LED´s have one common vcc. Can somebody help me what I have to change in the circuit? Thanks Alex |
Topic | Author | Date |
I need help with LED Driver | 01/01/70 00:00 | |
LED | 01/01/70 00:00 | |
LED | 01/01/70 00:00 | |
use a LED driver | 01/01/70 00:00 | |
74LS drivers | 01/01/70 00:00 | |
LED Driver - My Solution | 01/01/70 00:00 | |
quite risky | 01/01/70 00:00 | |
MCU-resistor-NPN | 01/01/70 00:00 | |
8051 is open drain ! | 01/01/70 00:00 | |
not good idea | 01/01/70 00:00 | |
totally wrong ! | 01/01/70 00:00 | |
This I would take with a grain of salt. | 01/01/70 00:00 | |
But nevertheless totally unsuited! | 01/01/70 00:00 | |
Where in Atmel errata or other informati | 01/01/70 00:00 | |
That's standard performance of quasi bi. | 01/01/70 00:00 | |
Try This | 01/01/70 00:00 | |
updated![]() | 01/01/70 00:00 |