Transformer Driver Circuit for Standby Power
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Solution Overview
Problem
Conventional systems require additional transformers or power supplies to provide power to standby circuits during reduced activity states, leading to increased costs and circuit board space usage, while also experiencing unnecessary power dissipation due to continuous current draw by transformers even when no load is present on the secondary side.
Innovation Solution
A method and apparatus that utilize a transformer driver circuit to supply power to both the load and standby circuit during reduced activity states by generating a series of adjustable pulses, including positive and negative half cycles of an AC voltage signal, reducing power dissipation and eliminating the need for a secondary transformer, using bidirectional semiconductor devices like triacs to manage these pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transformer is continuously connected to provide power during reduced activity state, then power is available to standby circuit, but power dissipation increases unnecessarily
Solution Approach 1:
The patent applies periodic action by implementing a reduced activity state where the transformer operates intermittently rather than continuously. The controller monitors load conditions and transitions the transformer to a reduced activity state when demand is low, using periodic pulse signals to maintain minimal power availability while significantly reducing power dissipation during standby periods.
2Reliability
If additional transformers or power supplies are used to provide power during reduced activity state, then power availability is maintained, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by enabling the single transformer to perform multiple functions: it operates in full activity state during high demand and transitions to reduced activity state during low demand. The controller manages both states using the same transformer hardware, eliminating the need for separate standby power supplies or additional transformers.
Solution Approach 2:
The patent merges the standby power function with the main power transformer by implementing control logic that allows the same transformer to serve both active load requirements and standby circuit requirements. The controller integrates both operational modes into a single unified power delivery system.
3Use of energy by stationary object
If transformer operates during reduced activity state, then standby circuit receives power, but transformer biasing increases power consumption
Solution Approach 1:
The patent applies dynamics by making the transformer operation adaptable and flexible. The controller dynamically adjusts the transformer's activity level based on real-time load conditions, transitioning between full activity and reduced activity states. This dynamic control allows the system to optimize power consumption while maintaining necessary standby power availability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach conserves power and reduces costs by minimizing transformer biasing and power consumption during inactive periods, allowing the transformer to efficiently provide power to the standby circuit without additional hardware, thus meeting energy efficiency standards.
Implementation Method 1
By connecting a load to the secondary side of a transformer, power may be provided to the load from a power source connected to the primary side of the transformer. The transformer may increase (e.g., step-up) or decrease (e.g., step-down) the voltage present on the primary side depending upon the supply needs of the load.
Implementation Method 2
The driver circuit may include one or more bidirectional semiconductor devices such as a triac. The series of pulses may include a series of half cycle pulses such as a series of half cycles of an AC voltage signal.
Data Source
AI summary
In addition to other aspects disclosed, a method comprises providing a signal to a transformer for supplying power during a reduced activity state. The signal comprises a series of pulses that comprises a positive pulse and a negative pulse. The signal is a segmented version of another signal provided to the transformer during the active state.