摘要:
An electric circuit for remotely starting and controlling the direction of a center pivot irrigation system comprises a first transformer, a second transformer, a first relay, a second relay, a third relay, and a fourth relay. The first transformer is coupled to a voltage source with a first voltage and may step the first voltage down to a second voltage. The second transformer is coupled to the first transformer, receiving a third voltage and stepping the third voltage up to a fourth voltage. The first relay may include contacts that are open when the irrigation system is started remotely. The second relay may include contacts that are closed when the irrigation system is started remotely. The third relay may include contacts that are closed momentarily to drive the system in a first direction. The fourth relay may include contacts that are closed momentarily to drive the system in a second direction.
摘要:
An electric circuit for remotely starting and controlling the direction of a center pivot irrigation system comprises a first transformer, a second transformer, a first relay, a second relay, a third relay, and a fourth relay. The first transformer is coupled to a voltage source with a first voltage and may step the first voltage down to a second voltage. The second transformer is coupled to the first transformer, receiving a third voltage and stepping the third voltage up to a fourth voltage. The first relay may include contacts that are open when the irrigation system is started remotely. The second relay may include contacts that are closed when the irrigation system is started remotely. The third relay may include contacts that are closed momentarily to drive the system in a first direction. The fourth relay may include contacts that are closed momentarily to drive the system in a second direction.
摘要:
A light system to be installed under branches of a tree, particularly under the fronds of a palm tree. The system involves a flexible multiple bulb light rod or a continuous string of lights. A lower end of the light rod is installed to a trunk of a tree by way of a bracket. The upper end of the flexible light rod has one end of a cord attached thereto. The cord is passed along the light rod by way of hooks attached thereon. By pulling at the other free end of the cord the flexible light rod will be bent downwardly to simulate the curvature of a branch on the tree without being attached thereto. The free end of the cord is then tied to a lower end of the bracket. The support rod for the lighting string may be supported on both ends on individual columns to form an arch.