Aerosol Inhaler Power Supply Circuit for Voltage Noise Filtering
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Solution Overview
Problem
Existing power supply units for aerosol inhalers fail to stabilize voltage effectively, leading to inappropriate voltage being supplied to the control device, especially when high-frequency noise is present.
Innovation Solution
A power supply unit design that includes a capacitor connected in parallel between the connector and the control device, along with a conductive member connecting separate circuit boards, to stabilize voltage and filter out high-frequency noise, ensuring appropriate power supply to the control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a capacitor is provided between the connector and the charger to stabilize voltage, then voltage stability is improved, but high-frequency noise may still be input to the control device causing inappropriate voltage supply
Solution Approach 1:
A low-pass filter is introduced as an intermediary component between the connector and the control device. This filter acts as a mediator that allows low-frequency signals (power supply voltage) to pass through while blocking high-frequency noise, thus protecting the control device without affecting the overall voltage stability function
Solution Approach 2:
The power supply circuit is segmented into multiple functional sections: a power supply section with the capacitor for voltage stabilization, and a control device section protected by the low-pass filter for noise rejection. This segmentation allows each component to perform its specialized function effectively
2Quantity of substance
If capacitors are provided on the downstream side of the charger, then power storage is improved, but voltage input to the charger cannot be stabilized
Solution Approach 1:
The capacitor is placed on the upstream side of the charger (between the connector and the charger) rather than downstream. This preliminary positioning allows the capacitor to stabilize the input voltage before it reaches the charger, ensuring stable charging operation from the outset
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
The solution effectively stabilizes voltage and filters out high-frequency noise, protecting the control device and ensuring reliable operation of the aerosol inhaler by using capacitors and resistors in a low pass filter configuration.
Implementation Method 1
a capacitor which is provided between the connector and the control device so as to be connected in parallel with the control device
Implementation Method 2
a conductive member which electrically connects the first circuit board and the second circuit board
Data Source
AI summary
A power supply unit for an aerosol inhaler includes: a power supply able to discharge power to a load for generating an aerosol from an aerosol source; a connector able to be electrically connected to an external power supply; and a control device. The power supply unit further includes: a conductor which electrically connects the connector and the control device; a capacitor provided between the connector and the control device so as to be connected in parallel with the control device; a first circuit board on which the connector is provided; a second circuit board which is apart from the first circuit board and on which the capacitor and the control device are provided; and a conductive member which electrically connects the first circuit board and the second circuit board.