Self-Biasing Inverter Switching to Block Leakage and AC Coupling
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Solution Overview
Problem
Self-biasing inverters experience power consumption and noise generation when turned off, leading to leakage currents and interference between input and output signals, affecting other circuit elements.
Innovation Solution
A self-biasing inverter design with a switch unit that turns off when power is turned off, preventing AC coupling and negative feedback, and includes impedance assemblies to manage signal paths, reducing leakage currents and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the power of the self-biasing inverter is turned-off, then power consumption should be reduced, but leakage current is generated causing power consumption to continue
Solution Approach 1:
The patent extracts the problematic capacitor from the signal path by introducing a switch unit that disconnects the capacitor when power is turned off. This removes the source of leakage current and AC coupling effects, allowing the inverter to achieve true power-off state with minimal power consumption.
Solution Approach 2:
The switch unit is activated in advance when power is turned off to prevent leakage current generation. By preemptively disconnecting the capacitor before leakage can occur, the system avoids the harmful effects of AC coupling and negative feedback that would otherwise cause continuous power consumption.
2Object-affected harmful factors
If the power of the self-biasing inverter is turned-off, then noise should be reduced, but input signal and output signal generate noise causing circuit damage
Solution Approach 1:
The switch unit extracts the capacitor from the circuit when power is turned off, removing the mechanism that causes AC coupling between input and output signals. This prevents the generation of harmful noise and interference that would otherwise damage other circuit elements.
Solution Approach 2:
The switch unit acts as an intermediary element that controls the connection between the capacitor and the signal path. When power is turned off, the switch unit mediates by disconnecting the capacitor, thereby preventing direct interaction between input and output signals that would generate harmful noise.
3Stability of the object's composition
If AC coupling or negative feedback of capacitor is prevented when power is turned-off, then stability should be improved, but circuit complexity increases due to switch unit
Solution Approach 1:
The switch unit serves multiple functions simultaneously: it prevents AC coupling, blocks negative feedback, and disconnects the capacitor from the signal path. By consolidating these protective functions into a single component, the patent minimizes the increase in circuit complexity while achieving comprehensive stability improvement.
Data Source
AI summary
A self-biasing inverter and a control method thereof related to the self-biasing inverter are provided. The self-biasing inverter includes a power terminal configured to receive a working power, an input terminal configured to receive an input signal, an output terminal configured to output an output signal related to the input signal, a first transistor electrically connected between the power terminal and the output terminal, a second transistor electrically connected between the output terminal and a ground terminal, a capacitor electrically connected between the input terminal and a node, a switch unit connected to the capacitor in parallel, and an impedance assembly electrically connected between the node and the output terminal. A control terminal of the first transistor is electrically connected to node. A control terminal of the second transistor is electrically connected to the node.