LED boost power supply

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Single AA cell powers two LEDs at constant current.
AA cell powers two LEDs at constant current

Efficiency can be increased by using a germanium transistor at the 33 ohm current sense resistor, and by using a proper torroid core in place of the crappy ferrite bead.

The tiny ferrite bead transformer is easy to make

Safety, accuracy and completeness of information provided herein is not guaranteed,
so be inspired by it but do not use it as a basis for experimentation or other actions.

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