Auxiliary Startup Circuit for Low-Power High-Impedance Electronics
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Solution Overview
Problem
There is a need for technologies that can effectively reduce the power consumption of small devices such as mobile and IoT devices, which require rapid startup times while maintaining low power usage.
Innovation Solution
An electric circuit comprising a target circuit and an auxiliary circuit, where the auxiliary circuit provides a lower impedance path to assist in startup by outputting a voltage corresponding to the output power, allowing for reduced startup time and power consumption through the use of high-impedance configurations and capacitance circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a high-impedance configuration is used to reduce power consumption, then power consumption is reduced, but startup time increases
Solution Approach 1:
The auxiliary circuit performs preliminary action by pre-charging the application point before the target circuit starts operating. This is achieved by connecting the auxiliary circuit to the application point through a switch, which charges the capacitance at the application point in advance. When the target circuit starts, the pre-charged voltage reduces the startup time while the target circuit maintains high-impedance operation for low power consumption.
Solution Approach 2:
The auxiliary circuit acts as an intermediary between the power supply and the target circuit. It provides a temporary low-impedance path through the switch to charge the application point, then disconnects to allow the high-impedance target circuit to operate independently. This intermediary mechanism resolves the contradiction by providing startup assistance without compromising the low-power operation.
2Use of energy by moving object
If the impedance of the target circuit is increased to reduce current flow, then power consumption is reduced, but the voltage application speed decreases
Solution Approach 1:
The auxiliary circuit performs preliminary charging of the application point before the target circuit needs to operate. By connecting through the switch and charging the inherent capacitance at the application point in advance, the voltage is already present when the target circuit activates, eliminating the delay that would otherwise occur due to the high impedance limiting the charging rate.
Solution Approach 2:
The switch enables periodic action by temporarily connecting the auxiliary circuit to charge the application point, then disconnecting to allow the target circuit to operate in its high-impedance state. This periodic connection provides the necessary voltage application speed only when needed, while maintaining low power consumption during normal operation.
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
The solution enables rapid startup and low power consumption by providing sufficient voltage and current to the target circuit, reducing startup time and overall power usage, even in high-impedance configurations.
Implementation Method 1
The auxiliary circuit has impedance lower than impedance of the target circuit, and outputs the voltage corresponding to the output power to the application point as an auxiliary voltage
Implementation Method 2
The auxiliary circuit may include a capacitance circuit which is provided to output the auxiliary voltage
Data Source
AI summary
An electric circuit according to one embodiment of the present technology includes a target circuit and an auxiliary circuit. The target circuit includes an output portion from which predetermined output power is output, and an application point to which a voltage corresponding to the output power is applied to output the output power. The auxiliary circuit has impedance lower than impedance of the target circuit, and outputs the voltage corresponding to the output power to the application point as an auxiliary voltage.