Hi everybody!
I am planning on building my own high power 10W portable lamp, powered by lithium ion batteries. To regulate the power, I will be using this Constant Voltage Constant Current regulator
http://www.ebay.com.au/itm/5A-PWM-D...847080?hash=item282afbf4a8:g:ON0AAOSwnHZYme5D
As you can see from the picture, it has one single pin for the PWM signal - How would I create this PWM signal?
If somebody could direct me to a schematic that shows how to generate a signal on one wire, that would be great. Presumably the PWM IC would have its own power source and simply generates a PWM output. Essentially what I want is a PWM CPU Fan controller, but only with the yellow wire (Which I believe sends the PWM signal)
All of the other PWM signal generators basically interrupt the entire circuit. This is now what I want as I've heard using PWM externally of a CC Source can make it extremely unstable.
I am planning on building my own high power 10W portable lamp, powered by lithium ion batteries. To regulate the power, I will be using this Constant Voltage Constant Current regulator
http://www.ebay.com.au/itm/5A-PWM-D...847080?hash=item282afbf4a8:g:ON0AAOSwnHZYme5D
As you can see from the picture, it has one single pin for the PWM signal - How would I create this PWM signal?
If somebody could direct me to a schematic that shows how to generate a signal on one wire, that would be great. Presumably the PWM IC would have its own power source and simply generates a PWM output. Essentially what I want is a PWM CPU Fan controller, but only with the yellow wire (Which I believe sends the PWM signal)
All of the other PWM signal generators basically interrupt the entire circuit. This is now what I want as I've heard using PWM externally of a CC Source can make it extremely unstable.