Dynamic power supply for light emitting diode

A power supply for powering a light emitting diode (“LED”), wherein said LED has a forward voltage when operating, said power supply comprising:

• a boost circuit configured for increasing power from a first voltage to a second voltage;
• a capacitor coupled to said boost circuit to receive said power at said second voltage, said capacitor having a capacitor voltage when charged;
• a buck circuit coupled to said capacitor and said LED and configured to draw current from said capacitor and deliver a fixed and regulated current to said LED;
• and
• a voltage regulation circuit for controlling said power received by said capacitor to maintain said capacitor voltage just above said forward voltage.

A method for powering a light emitting diode (“LED”) having a forward voltage, said method comprising:

• (a) charging a capacitor with a boost circuit to establish a capacitor voltage on said capacitor;
• (b) drawing current from said capacitor and delivering a regulated current to said LED when said capacitor voltage exceeds said forward voltage;
• (c) monitoring said forward voltage;
• and
• (d) maintaining said capacitor voltage just above said forward voltage by (i) reducing said charging of said capacitor in step (a) if said capacitor voltage is more than just above said forward voltage, or (ii) increasing said charging of said capacitor in step (a) if said capacitor voltage is below said forward voltage.