I am new to building electronics and I am working on a watch caddy. I own multiple watches that are charged by light sources. The problem with these watches are when they are in storage the batteries die. I want to create a watch caddy with LEDs to keep the watches charged. I want my watch caddy to have 10 watch bays. Each bay would have 5 LEDs providing the light. I know I need 50 LEDs and the specs on the ones I want to use are White: DC 3.0-3.2V / 20mA. I was thinking using a 16V power supply with these specs Input: 100-240VAC 50-60Hz Output: 16VDC @ 4.5A. I am not sure what the wattage is. I am thinking 10 strings of 5 LEDs in series. That leaves me with 16V per string using 200mA. Again I am a novice and I want this to last for years so I do not want to pop any LEDs.
Here are my main questions.
Will this power supply work?
Will I need any resistors? If so what kind?
Any and all recommendations are appreciated.
Here are my main questions.
Will this power supply work?
Will I need any resistors? If so what kind?
Any and all recommendations are appreciated.