Thanks for the replies everyone. I have looked at the datasheet and have some further questions for electronic wizards.
1. The minimum current is not a problem. I will just put an LED to indicate power and that should take care of that problem.
2. The data sheet says, "An input bypass capacitor is necessary
only when the regulator is situated far from the input filter." I will put one anyway just incase but would a .1uF cap be sufficient?
3. The data sheet also says, "An output capacitor, although not required, improves transient response and protection from instantaneous output short circuits. Excellent ripple rejection can be achieved without a bypass capacitor at the adjustment terminal." Again, would a .1uF cap be sufficient?
4. I don't understand the capacitance issue. The data sheet says, "The TL783 regulator is stable without bypass capacitors; however, any regulator becomes unstable with certain values of output capacitance if an input capacitor is not used." In another section the data sheet says, "when an instantaneous short circuit is applied to the output, both ringing and excessive fall times can result. A tantalum or aluminum electrolytic bypass capacitor is recommended to eliminate this problem." Is the electrolytic acting like a small battery? How can I measure the output capacitance? Is there a cap that will work for every value?
Thanks for the help, this chip seems to be exactly what I need.
Chris
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