A equipment for confirming voltage range of voltage source

The utility model provides an equipment for confirming voltage range of voltage source, this voltage source of generates sinusoidal signal. This equipment includes: the input for receive incoming signal, incoming signal has first portion and second portion, and the first portion is sinusoidal signal corresponding with the first portion of voltage source signal generally, and the second portion is not sinusoidal signal corresponding with the second portion of voltage source signal generally, the benchmark receiver for the base mark signal that the receipt was selected, base mark signal who is wherein selected and incoming signal are synchronous, the comparator for carry out the comparison with incoming signal's first portion and the base mark signal's that is selected corresponding part, and voltage range determiner for the voltage range of voltage source is confirmed based on the result of comparator.