Audio Peripheral Power Circuit Using Signal-Triggered Source Switching
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Solution Overview
Problem
Portable audio device peripherals often require power management to prolong the life of internal batteries, which are not replaceable and need efficient power sourcing from either the device or a secondary external source, especially when connected via audio jacks.
Innovation Solution
A power management circuitry that detects audio signals to regenerate power, includes a power selector to choose between internal and external power sources, and enables battery charging from the external source, using a power regeneration circuitry, audio signal detection, and a power switch to manage power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If power is supplied from the audio device to the peripheral accessory, then the internal battery life is extended, but the audio device's battery is drained faster
Solution Approach 1:
The peripheral accessory uses its own internal battery to power itself, eliminating the need to draw power from the audio device. The battery compartment is designed to be user-accessible for battery replacement, allowing the accessory to independently manage its power source and extend internal battery life without impacting the audio device's battery.
2Ease of operation
If an internal battery is placed inside the peripheral accessory, then power can be supplied to the accessory, but the battery compartment becomes sealed and non-replaceable
Solution Approach 1:
The peripheral accessory is divided into separate functional modules, with the battery compartment designed as an independent, user-accessible section. This segmentation allows the battery to be easily removed and replaced by the user without affecting other components of the accessory, maintaining both power supply capability and ease of maintenance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution extends battery life by allowing peripherals to use external power sources, reducing battery drain and enabling operation with a wider range of devices, while allowing battery recharging and efficient power usage.
Implementation Method 1
power regeneration circuitry that is configured to convert acoustic energy from audio signals into electrical energy
Data Source
AI summary
A power management circuitry for a peripheral electronic device includes a power regeneration circuitry, a power selector, a power switch and an audio signal detection circuitry. The power regeneration circuitry receives a continuous periodic sound wave from an audio device and converts the continuous periodic sound wave into an amplified DC electrical signal. The power source selector receives the amplified DC electrical signal and input from a primary power source and provides a power signal output. The audio signal detection circuitry receives the amplified DC electrical signal and transmits a wake-up signal to the power switch circuitry. The power switch circuitry is turned on by the wake-up signal and connects the power source selector to the peripheral electronic device main circuitry and transfers the power signal output to the peripheral electronic device main circuitry.