2 results about "Variable-voltage power supply" patented technology

The utility model relates to the technical field of power supply, specifically discloses a kind of vehicle-mounted electrical equipment's variable-voltage power supply system, including vehicle battery, overload protector, main distribution box, transformer, variable-voltage distribution box, multiple voltage switching matrix switch and on-off power matrix switch, the vehicle battery is connected with the main distribution box electricity by the overload protector, the main distribution box is connected with the transformer and multiple voltage switching matrix switch electricity respectively, the transformer is connected with the multiple voltage switching matrix switch electricity by the variable-voltage distribution box, the multiple voltage switching matrix switch is connected with vehicle-mounted electrical equipment electricity by the on-off power matrix switch.The variable-voltage power supply system of vehicle-mounted electrical equipment provided by the utility model is convenient to use, voltage switches efficiently, low in cost, reduces connecting wire harness, and safety is improved.

The application provides a DC motor feedback speed regulation system of analog quantity detection control and belongs to the technical field of motor control. The application comprises a base, a variable voltage power supply arranged on the base and used for providing power supply for the DC motor feedback speed regulation system, and an upper plate arranged above the base; a control execution module used for controlling the operation of a DC motor MA, a rotating disc, the DC motor MA used for driving the rotating disc to rotate, and a generator MF rotationally connected with the DC motor MA are arranged on the upper plate; three groups of load inertia adjusting devices with the same structure and a laser speed measuring instrument with a speed measuring reflective sticker are arranged on the rotating disc. The application can experiment the knowledge of classical control theory, and can also actively change the rotational inertia of the load, so as to facilitate the research on the tracking effect of the DC motor feedback speed regulation when the rotational inertia is changed.