Abstract: A power detecting circuit with fast power removing detection is disclosed. The power detecting circuit comprises an isolating device, coupled between an external power source and an internal power source, for isolating the external power source, and the internal power source, and a comparator, coupled to the external power source, for determining if the external power source is removed, and accordingly generating a removing signal.

Abstract: An automatic corrector for electronic parts queuing machines includes an automatic correction apparatus disposed below conveyance rails, and an electronic eye device disposed in front of the automatic correction apparatus. The automatic correction apparatus includes an elevating device, a linkage device, a drive device, and a correction device. The drive device is used to drive the linkage device, which in turn brings the elevating device to perform elevating and lowering motions. The correction device includes at least one to three correction grooves that are provided on the elevating device. The correction grooves can be oblong V-shaped, oblong M-shaped, or triangular V-shaped. When any of the electronic parts on the conveyance rails tilts forwardly or rearwardly, it can be detected by the electronic eye device.