Alright so I'm a bit of a newbie when it comes to circuts and arduino, but I'm planning on hooking up three 3w lights up and I'm wondering about a powersupply to use.
The Specs of the lights:
Forward Voltage: 3.2-3.8V Forward Current: 750mA
So what kind of power supply should I use? (Also if someone could tell me the formula they used to figure it out so I know for future refrence)
Also the transistors for the lights I'm going to use are the TIP120's (Does that sound fine? or do you have a better reccommendation?)