Abstract: A control circuit for an air conditioner outdoor unit, an electric control component and an air conditioner are provided. The control circuit has a power input end for accessing alternating current power, an outdoor unit power supply circuit connected to the power input end for converting the accessed alternating current into an outdoor unit power supply, a first electronic switch provided in series between the power input end and the outdoor unit power supply circuit, and a standby power supply. An input end of the standby power supply is connected to an output end of a standby control power supply of an indoor unit. An output end of the standby power supply is connected to a controlled end of the first electronic switch. The standby power supply starts to operate when receiving the standby control power supply of the indoor unit, to control the closing of the first electronic switch.

Abstract: A distributed control system for local or remote control of equipment. The distributed control system provides a communication bridge through a local control panel between a non-real-time network, and a real-time network, such as a controller area network. Both soft real-time and hard real-time networks are suitable, but hard real-time is preferred. Multiple distributed control units are used to control various equipment components. The distributed control system may be applied in any environment. The distributed control system may be applied to a skid-mounted coiled tubing unit.

Abstract: A distributed control system permits local or remote control of equipment. The distributed control system provides a communication bridge through a local control panel between a non-real-time network, such as an Ethernet, and a real-time network, such as a controller area network. Both soft real-time and hard real-time networks are suitable, but hard real-time is preferred. The system uses multiple distributed control units to control various equipment components and is thus highly expandable. The distributed control system may be applied in any environment. When applied to a skid-mounted coiled tubing unit, the distributed control system reduces the amount of hydraulic hose required and therefore makes set up and take down shorter and more economical.