Hello. I'm trying to design a 555 timer with duty cycle than 50% and, for some reason, it flashes once and then shines dimly continuously. The circuit is included. I'm aiming for a .2 sec pulse and 1.4 sec off. I've designed this in TINA, but the circuit doesn't want to cooperate. Only breadboarding it revealed the situation previous. I've read and studied what happens in astable timers, but nothing has helped. Can anyone solve this? Thank you.
115.5 KB Views: 22