Voltage Stabilization Circuit With Switchable Surge Isolation
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Solution Overview
Problem
In display devices, voltage stabilization circuits fail due to capacitor short circuits caused by environmental factors, leading to operational failures, and existing solutions do not effectively manage voltage stabilization during abnormal states or pulse current surges.
Innovation Solution
A voltage stabilization circuit comprising a first sub-circuit with a voltage stabilizing element and switching elements that control the connection state based on operating states, disconnecting the stabilizing element from the target when abnormal or during pulse surges to prevent damage and ensure normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voltage stabilizing element (capacitor) is used to stabilize voltage, then voltage stability is improved, but the circuit becomes vulnerable to short circuits and operational failure under environmental stress or pulse current surges
Solution Approach 1:
The patent introduces a control circuit as an intermediary between the voltage stabilizing element and the power supply module. This control circuit monitors the operating state of the stabilizing element and dynamically adjusts its connection to the power supply based on detected abnormalities, thereby protecting the circuit while maintaining voltage stability during normal operation
Solution Approach 2:
The patent implements dynamic control of the voltage stabilizing element's connection state. The control circuit changes the connection state from connected to disconnected based on the operating state detection, allowing the system to adapt to changing conditions and protect against short circuits while maintaining voltage stability when needed
2Reliability
If the voltage stabilizing element remains continuously connected to stabilize voltage, then voltage stability is maintained, but the circuit cannot respond to abnormal states or pulse current surges
Solution Approach 1:
The patent implements a feedback mechanism where the control circuit continuously monitors the operating state of the voltage stabilizing element and adjusts the connection state accordingly. When abnormal states are detected, the control circuit disconnects the stabilizing element to protect the circuit, and can reconnect it when normal operation is restored, providing both stability and adaptability
Solution Approach 2:
The control circuit is configured to detect abnormal operating states before they cause damage and proactively disconnect the voltage stabilizing element from the power supply module. This preliminary protective action prevents short circuits and pulse current surges from damaging the circuit while maintaining the ability to restore voltage stabilization when conditions improve
Data Source
AI summary
A voltage stabilization circuit includes a first sub-circuit. The first sub-circuit includes a first voltage stabilizing element; a first switching element; and a second switching element. For the first voltage stabilizing element, the first terminal is electrically connected to a first node, and the second terminal is grounded. For the first switching element, the first terminal is electrically connected to the first node, and the second terminal is electrically connected to a voltage stabilizing target. For the second switching element, the first terminal is electrically connected to the control terminal of the first switching element, and the control terminal is electrically connected to the first node. When the first voltage stabilizing element is in a first operating state, the second switching element is turned on, and the first switching element is turned off.