Hello, I am working on my senior project which is a "dimming circuit" for LED's. I have a circuit to drive the LED's, but need a PWM signal as input to the current controller (via opto isolator).
My advisor has suggested I used dual 555 timers for this. I have found a LM556 dual 555 timer chip. Question is, I can't find any sites that have examples of this type of circuit.
I need to achieve a ~1kHz signal so in order to vary the duty cycle I am going to use a potetiometer.
Can someone please point me in the right direction to a site that might have something if interest?
Thanks
Darrin
My advisor has suggested I used dual 555 timers for this. I have found a LM556 dual 555 timer chip. Question is, I can't find any sites that have examples of this type of circuit.
I need to achieve a ~1kHz signal so in order to vary the duty cycle I am going to use a potetiometer.
Can someone please point me in the right direction to a site that might have something if interest?
Thanks
Darrin