Bias Voltage Circuit for Extended Range and Forward Current Testing
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Solution Overview
Problem
Voltage-controlled devices have limited operating ranges due to restricted programmable voltage source circuits and lack the capability to perform forward current tests, making it difficult to determine the integrity of electronic components.
Innovation Solution
The electronic device incorporates a driving circuit, an electronic component, and a bias current circuit, which extends the operation range of the programmable voltage source circuit and enables forward current testing by providing a stable bias voltage and supporting the forward current test function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a programmable voltage source circuit is used to drive the voltage-controlled device, then the device can be operated with controllable voltage, but the operating range is limited due to the restricted voltage range of the circuit
Solution Approach 1:
The voltage control is divided into two independent circuits: a first circuit (driving circuit) that generates the primary control voltage within its limited range, and a second circuit (bias current circuit) that generates a bias voltage. These two voltages are combined through the electronic component's characteristics to achieve an extended overall voltage range, effectively segmenting the voltage generation task to overcome individual circuit limitations
Solution Approach 2:
The patent changes the operating parameters by introducing a bias current through the second circuit that operates at a different voltage level than the first circuit. By adjusting the bias voltage and control voltage independently, the system achieves a wider effective operating range than either circuit could provide alone, utilizing parameter transformation to extend functionality
2Reliability
If the general electronic device is disposed in the voltage-controlled device, then the device structure is simple, but it cannot support the forward current test function to determine component damage
Solution Approach 1:
The second circuit is designed with dual functionality: it provides a stable bias voltage for normal operation of the voltage-controlled device, and simultaneously enables forward current testing by allowing current flow through the electronic component when configured appropriately. This multi-functionality approach adds diagnostic capability without requiring a completely separate test circuit
Solution Approach 2:
The electronic component itself serves as an intermediary element that is subjected to both the control voltage from the first circuit and the bias voltage from the second circuit. During testing, the component's response to the combined voltages provides information about its health status, using the component as a mediator between the two circuits for both operation and diagnostics
Data Source
AI summary
An electronic device includes an electronic component, a driving circuit and a circuit. The driving circuit is electrically connected between a node and a first voltage. The electronic component is electrically connected between the node and a second voltage. The circuit is electrically connected between the node and a third voltage. The first voltage is different from the second voltage and the third voltage.