Does VGA to HDMI need power supply?
In theory, every converter that requires a chip needs to be powered, and the VGA signal is an analog signal, and the HDMI signal is a digital signal. The process of VGA to HDMI is the process of converting an analog signal to a digital signal. The analog signal cannot It is directly converted into a digital signal, and a dedicated chip is needed to convert the analog signal into a digital signal. Each converter chip has different requirements for power supply. Some only need a very low voltage. This type of converter can work normally with the power of the computer VGA interface, while some require the use of a power adapter to work normally. For a better explanation, here we take VGA to HDMI converter MiniVH and VH as an example to explain in detail.
VGA to HDMI converter MiniVH and VH
The VGA to HDMI converter MiniVH uses a low-voltage chip, which supports the conversion of VGA signal and the host’s 3.5mm audio signal into an audio and video synchronized HDMI signal; normally, it is directly plugged into the host’s VGA output interface and connected Connect the 3.5mm audio, and then connect the HDMI cable and HDMI display to use, but for the stable operation of the machine, we usually leave a Micro USB power supply interface, when the image does not display or other unstable conditions, use The equipped Micro USB cable is connected to the USB port of the host for power supply, and the problem can be solved; of course, if your host can work normally without connecting to the power supply, and it does not affect the screen, you can be the master by yourself, and you don’t need to connect the USB for power supply. ; At this time, in everyone’s opinion, it is the case that VGA to HDMI does not need power supply.
VGA to HDMI converter interface description diagram (MiniVH)
VGA to HDMI converter connection method (MiniVH)
VGA to HDMI converter VH is relatively speaking, because the color depth, bandwidth, etc. are large, the chip used has a relatively high voltage requirement, so it needs to use a power adapter to supply power.
VGA to HDMI converter interface description diagram (VH)
VGA to HDMI converter connection method (VH)
Does VGA to HDMI need power supply? In general, whether it is a Mini VGA to HDMI converter MiniVH or an industrial grade VGA to HDMI converter VH, power is required during the process of VGA to HDMI conversion. If there is no power supply, it will cause If the machine cannot work normally, there will be a black screen, unstable picture and other problems if the machine fails to work normally.