Patent ID: 6960961

Claim:
An electrical circuit for generating an oscillating signal having a modulated frequency that produces reduced electromagnetic interference while operating within a frequency range, comprising: a randomized signal generator configured to create a randomized analog signal; a variable frequency oscillator configured to generate the oscillating signal, the frequency of the oscillating signal being based on a current state of a frequency modulation signal; and a frequency range converter configured to produce the frequency modulation signal, the frequency range converter comprising: an analog-to-digital converter (ADC) configured to periodically convert the randomized analog signal to a digital input value; a microcontroller configured to generate a digital output value for each digital input value, with each digital output value being limited so that the oscillating signal operates within the frequency range; and a digital-to-analog converter (DAC) configured to convert each digital output value to the current state of the frequency modulation signal.