viper3two @ 12/12/2007 - 13h35 a dit:
First, what is the recommended ma of the 3 point clip for the power supply? I plan on using a power supply instead of batteries. It will be 6 volts (same as 4 1.5 batteries), but I do not know whether to get a 300ma or 500ma power supply.
The second question is what resistor should I use if I plan on getting a 300ma power supply, or the 500ma power supply, could you list both recommendations.
A power supply is normally a
constant voltage source that supplies whatever current the circuit wants, up to a maximum value. The 300mA and 500mA values you mention are the maximum currents that those supplies can provide and since LEDs normally require less than 100mA, there's no practical difference between the two supplies.
The current (mA) that you enter into the wizard is the LED current and needs to be less than the maximum current as per the specifications (100mA in the case of SFH385P). Try 40mA.
