The invention relates to a power supply control device for a power
amplifier tube and a power-on and power-off control method thereof. The device comprises an MCU (Microprogrammed
Control Unit) module, a temperature sampling module, a
voltage DAC (
Digital to Analog Converter) module, a power supply module and a drain
electrode power supply control module; the MCU module is user for controlling the drain
electrode power supply of the power
amplifier tube and the
negative voltage power supply of a grid in a unified mode, and the
grid voltage can be conveniently, quickly and dynamically adjusted through the control of the
negative voltage power supply of the grid, so that self-adapted dynamic adjustment under different working temperatures is realized, and
correctness and reliability for power-on and power-off sequence of the power
amplifier tube are ensured through the combination of the control of the grid power supply, thus the power amplifier tube can be better protected from being burnt by incorrect power-on and power-off timing sequence, the power-on and power-off control timing sequence of the power amplifier tube is met, the power amplifier tube is always at a good working condition, and the reliability of power amplification
system is promoted. According to the power supply control device for the power amplifier tube, the
correctness and reliability for power-on and power-off sequence of the power amplifier tube are ensured, and the reliability of the whole power amplification
system is directly promoted.