Resonance frequency adjusting circuit

摘要

A resonance frequency adjusting circuit in electronic communication with a power supply and a load connected to the power supply includes a first LC filter, a capacitor, a switch, and a frequency detecting and control module. The first LC filter circuit is electrically connected between the power supply and the load. The switch is electrically connected between the capacitor and ground. The frequency detecting and control module detects a current transient frequency of the load, compares the current transient frequency with a first resonance frequency of the first LC filter circuit, and controls the switch to turn on/off according to the comparison.

主权项

1. A resonance frequency adjusting circuit in electronic communication with a power supply and a load, wherein the power supply comprises a first output terminal and a second output terminal respectively connected to a first terminal and a second terminal of the load, the resonance frequency adjusting circuit comprising:
a first inductor electrically connected between the first output terminal and the first terminal of the load; a first capacitor electrically connected between a node between the inductor and the load, and a node between the second output terminal of power supply and the second terminal of the load, the first capacitor being grounded; a second capacitor, one end of the second capacitor electrically connected to a node between the inductor and the first capacitor; a switch connected between another end of the second capacitor and ground; and a frequency detecting and control module, the frequency detecting and control module detecting a current transient frequency of the load, and comparing the current transient frequency with a first resonance frequency of the first inductor and the first capacitor, and controlling the switch to turn on/off according to the comparison.