I'm building a strobe and I need max current from my voltage regulator. I have 13.56V DC coming in from the 2000uf caps. I need 12V DC & a max of 1.5A. I haven't been able to find anything that will let my control the voltage and set the max current. I have found current regulating setups, like this:
And Voltage Setups like this:
I used this formula:
R1 = 1.25v / Iout
R1 = 1.25v / 1.5A
R1 = 0.8Ω
Then used:
Vout = 1.25(1+(R2/R1))
(((12/1.25) - 1) / 0.8) = R2
R2 = 10.75Ω
So I grabbed the parts and threw it together an or course everything caught on fire. So I'm guessing the power rating of the resistors are way off? I had 1/8W and looking at the circuit I'll probably need something like 2W? Am I on the right track? or way off? should I just go get some higher wattage resistors and use those?
On another note I may be able to mod my circuit to work on 13.56V right from my cap. But i'm guessing this would be a bad idea no?
And Voltage Setups like this:
I used this formula:
R1 = 1.25v / Iout
R1 = 1.25v / 1.5A
R1 = 0.8Ω
Then used:
Vout = 1.25(1+(R2/R1))
(((12/1.25) - 1) / 0.8) = R2
R2 = 10.75Ω
So I grabbed the parts and threw it together an or course everything caught on fire. So I'm guessing the power rating of the resistors are way off? I had 1/8W and looking at the circuit I'll probably need something like 2W? Am I on the right track? or way off? should I just go get some higher wattage resistors and use those?
On another note I may be able to mod my circuit to work on 13.56V right from my cap. But i'm guessing this would be a bad idea no?