It is not a 555. It is a Cmos LMC555 that has a max output high current of nothing when its output is at the supply voltage. Its output high current is not enough to light the LEDs directly but it can drive the transistor.A 555 can only get within 1.4V of the positive supply rail, so the output of the 555 is 7.8V max.
Thread starter | Similar threads | Forum | Replies | Date |
---|---|---|---|---|
M | Single LED flasher (not flip flop) | Analog & Mixed-Signal Design | 39 | |
HT12E / HT12D RF433 not fast enough, for a simple led flasher? | Wireless & RF Design | 17 | ||
G | Light flashing unit for car | General Electronics Chat | 133 | |
H | LED Flasher Circuit Not Working | PCB Layout , EDA & Simulations | 5 | |
Flasher Relay Board | General Electronics Chat | 9 |