Everyone thank you sooooo much, I have another question: When using the NE555 for one second pulse, if time = RXC then do I have to adjust R or C for the trigger Vcc of 2/3 ????? Thanks again, Jim
If I can ever be of any help to anyone, I am a licensed electrical inspector and licensed electrical contractor. Maybe pay back the brain pickin I do ! Thanks again everyone. Im going to be starting a new thread on 555 timers. I wanna know everything I can about the 555 from 1-8, I know how to hook em up but I learned its better to know the "why" instead of just the "how" I understand logic circuits because I did a lot of industrial controls where I designed many motor control / PLC systems. IC's unlike line voltage equipment can be destroyed so easy and Im tired of runnin to RS for my components. I know Vcc + and ground -, trigger 2/3, output (max 200ma) but I dont yet understand: threshold, control voltage, reset (I think reset is just give it an input of Vcc+ and it resets itself. I am using it for a 1.0s clock (pulse)...... Thanks , Jim