SP300VAC600W is a switching mode single-channel output high-precision AC Power Source, it`s cost effective and fully programmable for both basic frequency conversion and advanced AC power line or DC power disturbance test applications. This Ac Power Supply adopts high speed DSP+CPLD control, high frequency PWM power technology and active PFC design to realize AC/DC stable output.
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Some features as below:
600W AC Power Supply,Variable AC Power Supply,Portable Ac Power Source,Ac Voltage Source APM Technologies (Dongguan) Co., Ltd , https://www.apmpowersupply.com
Quan Zhi Company Quan Zhi Company's full name is Quan Zhi Technology Co., Ltd. The company is headquartered in Zhuhai, China. Its main products are multi-core intelligent terminal application processors and intelligent power management chips. It is in the leading position in the field of ultra-high definition video codec, high-performance CPU/GPU multi-core integration, high-level integration of advanced technology, and ultra-low power consumption.
Quan Zhi A31 chip configuration
Quan Zhi A31 chip, using Cortex-A7 architecture quad-core processor (CPU), equipped with SGX544 MP2 dual-core GPU, using 40nm process technology, clocked at 1.0GHz. 
Quan Zhi A31 chip shortage and advantage
Quan Zhi A31 chip in the CPU above is not enough, do not look at its use of a quad-core CPu, but its performance is similar with the dual-core A9 CPU, and 40nm process is already non-mainstream, there is a lack of heat, energy consumption, and frequency Relatively low.
Quan Zhi A31 chip is not without merit, its GPU performance is not bad, better than Ruixin RK3188 chip. The Quan Zhi A31 chip uses the SGX544 MP2 dual-core GPU. To give an example, under the same conditions (figures like cars and gasoline are the same), if the SGX GPU can run for 200 kilometers, then the Mali400 of the RK3188 chip will only reach about 60% of the former. Therefore, in the game, the game will use the A31. The chip's box is more fluid.
What is the TV box chip? Quan Zhi A31 interpretation
A few days ago, the author explained to you a bit about the domestic Rockchip RK3188 chip solution, and when asked, why do some businesses emphasize the chips they use when they promote their set-top boxes? What is the difference between them? Do not worry, today I share with you all the A31 chip program, after the author will also introduce other set-top box chip program, so that we can more easily understand what is a set-top box.