I am wanting to make a table lamp using LED lights. I am going to use a wall adapter to bring the voltage down to 12 volts. Looking at adapters i've seen they have different mA values(1A, 500mA, 800mA). Do i need to take this value into account when calculating the resistors i need to use??
I've done LED for automotive 12volt and never worried about the mA, just the voltage of the LED's into 12V and find the resistor value. So do i need to calculate this differently? If so, how?
Also, adapters come in centre postive or centre negative..does it matter which i use? dont think it should?
I've done LED for automotive 12volt and never worried about the mA, just the voltage of the LED's into 12V and find the resistor value. So do i need to calculate this differently? If so, how?
Also, adapters come in centre postive or centre negative..does it matter which i use? dont think it should?