Abstract
A signal resolution boost circuit includes a full-bridge rectifier and an amplitude cutter, wherein full-bridge rectifier receives a high voltage input signal, and outputs a full wave signal for high voltage input signal after full wave is carried out. Amplitude cutter is connected to the full bridge rectifier for cut the full wave signal according to a reference voltage value to, and outputting an adjustment output signal. Using this circuit for enhancing signal resolution, when the adjusted output signal further is compressed to low voltage signal with 3. 3 or 5 volts, signal precision can be effectively improved up to several times and signal distortion problem can be solved.