Patent attributes
An electronic circuit according to the embodiment of the present invention includes a first circuit, a second circuit electrically insulated from the first circuit, and a transmitter transmitting a signal between the first and the second circuits. The first circuit receives an input signal, generates a first reference signal, and converts frequencies of the input signal and the first reference signal. The transmitter transmits the frequency-converted input signal and first reference signal to the second circuit. The second circuit converts the frequencies of the transmitted input signal first reference signal to obtain a restored input signal and a restored first reference signal, generates a second reference signal, calculates a gain to be adjusted of the restored input signal based on the restored first reference signal and the second reference signal to adjust the gain of the restored input signal.