NOVELTY - The circuitry has a power source selector (240) receiving a first input comprising amplified direct current (DC) electrical signal (211) from a power regeneration circuitry (210) and a second input from a primary power source. An audio signal detection circuitry (220) receives the amplified DC electrical signal from the regeneration circuitry and transmits a wake-up signal to a power switch circuitry (230). The power switch circuitry is turned on by wake-up signal, and connects the selector to a peripheral electronic device main circuitry to transfer power signal output to the main circuitry.    USE - Power management circuitry for use in a peripheral electronic device e.g. payment card reader, magnetic card reader, printer, headphone, speaker, microphone or hands-free versions device, to detect presence of an audio power source e.g. battery, capacitor, rechargeable power source or non-rechargeable power source, solar cell, circuitry that regenerates power from audio signal, thermoelectric generator, piezoelectric element, and device generating power from motion and vibration, and generate an electrical signal that is used to turn on a power switch of a peripheral accessory in an audio device e.g. mobile phone, personal digital assistant (PDA), netbook, tablet computer, notebook computer, game console, electronic-book (e-book) reader, portable video player, or digital audio player (all claimed).    ADVANTAGE - The battery completely cuts off from the circuitry and/or recharges an internal battery from an external power source to manage power consumption in the peripheral accessory in order to prolong lifetime of the internal battery. The internal power source and the secondary power source enable mobile devices to operate with an accessory to allow the peripheral accessory to be used with a wider range of devices.    DETAILED DESCRIPTION - The peripheral electronic device comprises one of a payment card reader, magnetic card reader, a printer, headphones, speakers, microphones or hands-free versions. The primary power source comprises one of a battery, a capacitor, a rechargeable power source or a non-rechargeable power source. The circuitry includes an audio jack comprising one of a 4-contact tip-ring-ring-sleeve (TRRS) connector, 3-contact tip-ring-sleeve (TRS) connector, a 3.5mm audio jack, a 6.35 mm audio jack, a 2.5 mm audio jack, remote control adapter (RCA) connector, X-linked recessive (XLR) connector, a banana connector and mono or stereo versions. An INDEPENDENT CLAIM is also included for a method for providing power management in a peripheral electronic device.    DESCRIPTION OF DRAWING(S) - The drawing shows a circuit block diagram of a circuitry of a peripheral device.    Power regeneration circuitry (210)    DC electrical signal (211)    Audio signal detection circuitry (220)    Power switch circuitry (230)    Power source selector (240)