During the keynote speech held in Beijing early this morning, Apple announced that MacOS High Sierra has updated support for Metal 2 graphics technology, so Mac devices will soon be able to connect to external GPUs through Thunderbolt 3 interfaces, for notebook virtual reality that requires higher performance. The application brings possibilities. In addition to the HTC Vive headset (Industrial Light & Black Warrior) demos on stage for demonstrations, Valve, which owns the Steam gaming platform, also announced SteamVR (beta) for the Mac today.
In order to help developers get started, Apple also sells external videocassettes designed to meet the needs of Mac users eager for higher performance - such as graphics-intensive VR and 3D applications / games - even if macOS High Sierra is still in Beta stage.
According to Apple’s official website preview page, external GPU support will be pushed to all users in the spring of 2018. However, only Apple certified the current site from the Sonnet's external GPU expansion box (Lightning 3 support +350 watt power supply).
The kit comes with a "VR-Ready" AMD Radeon RX580 alone (8GB memory), and also can be purchased for $100 HTC Vive virtual reality headset device, interested users can be registered as Apple developers a project member.
Obviously, Apple hopes that Mac will become an excellent platform for VR content creation and experience. After the external GPU expansion box is on the market, the MacBook and iMac product lines will also become more robust.
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A solar Controller is an electronic device that controls the circulating pump in a solar hot water system to harvest as much heat as possible from the solar panels and protect the system from overheating.
Two kinds solar controller included:
2.MPPT Controller
MPPT stands for Maximum Power Point Tracking. MPPT is a technique to observe and regulates the energy going from Solar Panel to the batteries. Solar panels show changeable outputs according to weather conditions. MPPT charge control devices can match the solar panel voltage with Battery voltage to maximize the charge efficiency. In these systems, the full power of solar panels can be used by balancing between voltage and current according to the P = V x A equation. For example, the amount of current drawn from the panels reduced to protect the voltage when the weather is cloudy. When the weather is sunny, it is allowed to draw more current.
The main difference between PWM and MPPT charge control devices is that the MPPT devices are more efficient. MPPT charge control devices have 30 % more efficient in charge efficiency according to PWM type. Panel voltage and battery voltage should be matched in PWM systems. In MPPT systems, the panel series are allowed to have higher voltage than batteries. This means more flexibility for system growth.
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