Visual wide-voltage wide-load direct-current switching power supply detection device

The utility model relates to a visual wide-voltage wide-load direct-current switching power supply detection device, which comprises a main loop, a control loop, an ampere meter, a voltmeter, a timer and a man-machine interaction device, the main loop is provided with a variable resistance circuit and a first switch in series, and the control loop is used for being connected with a power supply through a second switch. The control loop comprises a man-machine interaction equipment power supply branch circuit, a timer branch circuit, an ammeter power supply branch circuit and a voltmeter power supply branch circuit which are arranged in parallel, and the variable resistance circuit can realize variable resistance adjustment according to actual needs, so that combination and switching of different load ranges are realized; reliable detection of the direct-current switching power supply is achieved by switching different loads, and the loads are easy to set, low in cost and convenient to use. Detection of load c