Voltz
New Member
Ok so there's something that's been puzzling me for ages now,
If you have a 12V Power Supply Regulated to 1.2A - **broken link removed** and a 2V LED 20mA, Then the LED I need would be
12V - 2V = 10V, 10V / 20mA = 500Ω surely?
But if the currents 1.2A and you want 20mA then wouldn't you need 1200/20 = 60Ω
Which of these is correct and is there any situation where the opposite is true?
If you have a 12V Power Supply Regulated to 1.2A - **broken link removed** and a 2V LED 20mA, Then the LED I need would be
12V - 2V = 10V, 10V / 20mA = 500Ω surely?
But if the currents 1.2A and you want 20mA then wouldn't you need 1200/20 = 60Ω
Which of these is correct and is there any situation where the opposite is true?