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VGH stands for Vertical Gate High.
It is a voltage used in liquid crystal displays (LCDs) to control the horizontal position of the liquid crystal molecules.
VGH positive 24V to 29V as per panel size
The exact voltage needed for VGH depends on the specific LCD display technology and manufacturer
VGL is the abbreviation for Gate-to-Source Voltage Low, Negative Voltage
which refers to the voltage applied to the gate terminal of a field-effect transistor (FET) to control the flow of current between the source and drain terminals.
It is commonly used in the context of FET amplifier circuits and is typically specified as a range of values, such as -5v to -11v
