Temperature-Stable Oscillating Circuit Using Constant Voltage and Current
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Solution Overview
Problem
Existing oscillating circuits are significantly affected by temperature changes, leading to large frequency errors in the output oscillating current, necessitating a solution that maintains constant voltage and current regardless of temperature variations.
Innovation Solution
The proposed oscillating circuit incorporates a constant voltage supply circuit and a constant current supply circuit, both of which are temperature-independent, utilizing temperature calibration circuits and reference voltages to ensure that the oscillating signal maintains a preset frequency unaffected by temperature fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a commonly used oscillating circuit generates oscillating current based on gate delay features, then the circuit structure is simple, but the frequency of output oscillating current has relatively large error when temperature changes greatly
Solution Approach 1:
The patent changes the operating parameters by providing constant voltage and constant current to the oscillating circuit, ensuring that the frequency-determining parameters (voltage and current) remain stable despite temperature changes. This resolves the contradiction by maintaining frequency accuracy through parameter stabilization rather than changing the basic circuit structure.
Solution Approach 2:
The patent employs feedback mechanisms through constant voltage supply circuit and constant current supply circuit that automatically adjust to maintain stable voltage and current levels. These feedback systems compensate for temperature-induced variations, maintaining frequency accuracy without increasing overall circuit complexity significantly.
2Ease of operation
If the oscillating circuit is affected by temperature change, then the circuit operation is simple, but the output frequency stability deteriorates
Solution Approach 1:
The patent stabilizes the output frequency by changing and controlling the voltage and current parameters through constant voltage and constant current supply circuits. These circuits ensure that the critical parameters affecting frequency remain constant despite temperature variations, thereby maintaining frequency stability while keeping the circuit operation straightforward.
3Stability of the object's composition
If constant voltage and constant current supply circuits are added to the oscillating circuit, then the frequency stability is improved, but the device complexity increases
Solution Approach 1:
The constant voltage supply circuit and constant current supply circuit serve multiple functions: they provide stable operating conditions for the oscillating circuit, compensate for temperature effects, and ensure frequency accuracy. By making these supply circuits multi-functional, the patent achieves frequency stability without proportionally increasing overall system complexity.
Data Source
AI summary
An oscillating circuit comprises a constant voltage supply circuit, a constant current supply circuit and an oscillating circuit; the constant voltage supply circuit is configured to output constant voltage; the constant current supply circuit is configured to output constant current; and the oscillating circuit is connected to the constant voltage supply circuit and the constant current supply circuit, and is configured to generate an oscillating signal with a preset frequency according to the constant voltage and the constant current.