slip rings

Conventional cable winches come in two forms. One is the non-slip ring winch, the other is the end slide ring winch. The former can only be used to store cables, and cables still need to be removed or connected when retracting or releasing cables; The latter because of the use of end slip ring, and the use of ordinary brush, easy to cause brush contact is not close, causing phase loss, heating and other faults, can only be used in the requirements of low, low current occasions

Tethered UAV, also known as tethered UAV, is a special form of multi-rotor UAV. It uses ground power transmitted through tethered cables as a power source instead of traditional lithium batteries. It is characterized by the ability to hover in the air for a long time. The tethered drone is composed of a ground high-voltage DC voltage stabilization system, a pay-off device, a synchronous reel, a mooring cable, an air voltage stabilization module and a backup battery. The high-voltage DC voltage stabilization system And the synchronous reel is installed on the reel, and the tethered cable is connected with the voltage regulator module and the backup battery.