Flyback switcher works down to 1.1V, flashes HBLEDs

This Design Idea shows a way to drive low-power electronic circuits using a single 1.5V cell. The design is based on a free-running oscillator that drives a flyback transformer to  generate a controllable higher voltage. It can be used to power analog circuitry, microcontrollers, and any other light loads. The power circuit was designed, simulated, …

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