In the 90's I was working in an electronics parts supply warehouse and read a build article in an old magazine about a very simple billboard marquee type led chaser circuit. I built a couple and can't figure out the circuit now. I am looking for help...
The circuit would control 3 strings of leds, with one string either on or off depending on which way the leds were connected. The only other components were 3 resistors and 3 capacitors and a 9V battery. I have been racking my brain trying to figure out the circuit and haven't hit on it yet. I am hoping that someone would be able to help me figure it out or maybe have the article. It was published sometime in the 80's or 90's, but I can't remember anything else about the magazine...
Thanks for any help you may be able to give.
Mike
The circuit would control 3 strings of leds, with one string either on or off depending on which way the leds were connected. The only other components were 3 resistors and 3 capacitors and a 9V battery. I have been racking my brain trying to figure out the circuit and haven't hit on it yet. I am hoping that someone would be able to help me figure it out or maybe have the article. It was published sometime in the 80's or 90's, but I can't remember anything else about the magazine...
Thanks for any help you may be able to give.
Mike