I bought some 10W high power RGB LED’s and now need to build 3x suitable drivers cheaply. Doing a web search gave me this interesting article Loading... but the LED’s are different ratings and the MOSFET and transistor will also be different as I want to get all components from one supplier (http://cpc.farnell.com/) if possible to reduce P&P charges.
VF = 6 - 6.6 (Red)
VF = 9.6 - 10.2 (Green/Blue)
IF = 350mA
In the circuit I wish to substitute the 2N5088 with BC635 and the BUZ71 with IRFZ24NPbF. I hope to drive it all with this http://cpc.farnell.com/jsp/search/productdetail.jsp?sku=PW02701 PSU running through 3x LM350 to step voltage down to something like 7V for Red & 10V for Green and Blue LED’s. Using these values I calculate R2 in the circuit to be 1.43 ohms. Can someone please check my assumptions and calculations or offer alternate circuit to drive the RGB LED please.