Method and Circuit Arrangement for Converting a Sine Wave Signal into a Square Wave Signal

A circuit arrangement for converting a sine wave signal into a square wave signal, the circuit arrangement comprising:

• a threshold-value device, into which the sine wave signal is inputtable at an input, the threshold-value device configured to generate the square wave signal by comparing a sine wave signal value to a predefined threshold value and output the generated square wave signal at an output of the threshold-value device;
• an average-value forming device configured to form an average-value signal representing a average value of the square wave signal;
• and
• a control amplifier device, into which the average-value signal is inputtable at an input, the control amplifier device configured for generating, as an actuating signal, a signal representing a difference between an average-value signal actual value and a predefined average-value signal nominal value.

A method comprising:

• inputting a sine wave signal at an input of a threshold-value device;
• generating, with the threshold-value device, the square wave signal, the generating comprising comparing a sine wave signal value to a predefined threshold value;
• outputting the square wave signal at an output of the threshold-value device;
• superimposing an actuating signal on the sine wave signal at the input of the threshold-value device, the actuating signal being generated by:
• forming an average-value signal representing an average value of the square wave signal;
• and
• inputting the average-value signal at an input of a control amplifier device for generating, as the actuating signal, a signal representing a difference between an average-value signal actual value and a predefined average-value signal nominal value;
• and
• reversing polarity of a switching mixer with the square wave signal.