| Electronics > Beginners |
| 1 NE555 timer and 1 LED circuit question |
| (1/4) > >> |
| Lucky-Luka:
Hi all I've done a simple flashing LED circuit using a NE555 IC. I've simulated it in LTspiceIV. And no, I haven't got an oscilloscope. It looks like that the LED takes two moments to flash to its full brightness. This is the video I've done regarding my circuit: https://www.youtube.com/watch?v=-vjMvDEyco4&feature=youtu.be I expected a crisp ON and OFF behaviour but it looks like it's not the case. Can anybody help me to understand what's going on? Cheers |
| soldar:
I always put a 0.1 uF cap between pin 5 and gnd. |
| Audioguru:
When an old fashioned 555 switches its output then it draws 400mA for a moment (shoot through) that sags your battery for a moment. Any other kind of power oscillator dont doo dat. |
| Lucky-Luka:
That's interesting. Thanks Cheers p.s. is there a way to find all my threads or posts in this forum? |
| drescherjm:
--- Quote ---p.s. is there a way to find all my threads or posts in this forum? --- End quote --- Its in your profile. Profile->summary |
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