ABSTRACT
Along with the development of the ages, the numerical electronics technique has already make widely available to our life, work, research, each realm, this text will introduce a kind of number to control direct current steady press power supply, this power supply from imitate power supply, show electric circuit, control electric circuit, few molds conversion electric circuit and enlarge electric circuit to constitute for four-part cent. Accurate say be imitate power supply to provide each electric voltage that chip power supply, the figures tube, enlarger need; the manifestation electric circuit used for showing the power supply outputs electric voltage of size. Analyzed a numerical technique and imitates the concept that the technique converts mutually in the meantime. With traditional steady press power supply to compare to have an operation convenience, the power supply stability high characteristics, its exportation electric voltage size adoption figures show.
Abstract This task designs a regulated power supply of direct current with numerical control and numeric display, this power supply includes the modular circuit of direct current of stabilized voltage, protective circuit modular and voltage adjust modular etc. We can carry out step-by-step control through the button for its total voltage ( ±0.1 V ), and the voltage value can increase or reduce continuously when button is pressed for seconds . Demonstration adopts the digital tube, the voltage value showed by the digital tube should be equal with the voltage value by the power supply outputs. Active, not passive. The active property is also the reason while this system is so highly regarded!
Keywords: Intrusion Detection System，SCM STC89C52，DAC0832，74HC373
