Power Source Apparatus Voltage Control Circuit
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Solution Overview
Problem
Conventional power sources that output both positive and negative voltages have limitations in circuit size and accuracy of control, leading to suboptimal performance in applications requiring precise voltage regulation.
Innovation Solution
A power source apparatus with an output unit, feedback unit, and driving unit that adjusts voltage output based on a difference between the output voltage and a threshold value, allowing for highly accurate control of both positive and negative polarities using a simplified circuit configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a simplified circuit configuration using capacitive elements and constant voltage diodes is used to output positive and negative voltages, then the circuit size is reduced, but the control accuracy of the voltages deteriorates
Solution Approach 1:
The patent introduces feedback units that detect the actual output voltages and feed them back to control units. The control units compare the detected voltages with target voltages and adjust the switching elements accordingly, enabling accurate control of positive and negative voltages despite using a simplified circuit configuration without complex individual amplifiers for each polarity.
2Measurement precision
If individual amplifiers are provided to control positive and negative voltages separately, then the voltage control accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent merges the control functions for positive and negative voltages into a unified control architecture. Instead of providing completely separate amplifier circuits for each polarity, the invention uses shared control units that manage both polarities through coordinated switching elements, thereby reducing overall circuit complexity while maintaining control accuracy.
Solution Approach 2:
The control units in the patent are designed to perform multiple functions - controlling both positive and negative voltage outputs through a single integrated control mechanism. This multi-functional approach eliminates the need for duplicate separate control circuits, reducing device complexity while preserving the ability to accurately regulate both polarities.
Data Source
AI summary
A power source apparatus includes a transformer configured to output a voltage, a feedback unit configured to output a feedback signal based on the voltage output from the transformer, and a driving unit configured to drive the transformer according to a setting signal for setting the output voltage and the feedback signal. Whichever of a voltage of positive polarity and a voltage of negative polarity is output, the feedback unit controls the voltage output according to a value of a difference between the output voltage and a threshold value.