Earners of the Electronic Circuits and Power badge have developed the skills necessary for understanding audio and RF circuits, oscillators, feedback, waveforms and power supply systems. They've learned components, functions, applications, and troubleshooting of telephone, hard-wired, fiber-optic, and sound systems. They've studied oscillator, transmitter, regulator, and receiver applications, components and circuits used to produce DC power from AC input sources, and industrial power supplies.