MOTHER BOARD OF TRAINER WITH VIRTUAL FRONT PANEL FOR STUDY OF LINEAR VOLTAGE REGULATOR CHARACTERISTICS

Abstract

A motherboard for computer-aided investigation of characteristics of secondary power supply sources has been developed, manufactured and adjusted. A version of such circuit board is made for the purpose of studying a controlled compensating voltage regulator with continuous control function, based on the integrated circuit LM317L. Software for microcontroller PIC18F4550 has been developed which allows to display information on seven-segment LED indicators, respond to the input from a matrix keyboard, exchange data, via interface RS-232 by means of protocol, with a personal computer. A virtual front panel of the test bench for training is created, reproducing a real one, and the developed software allows to use this panel for carrying out laboratory experiments related to studying of principles of operation, the basics of physics and circuit technique of secondary power supply sources, and also remotely controlling of the test bench through USB cable connected to the PC. Besides, the additional software allows to easily design laboratory experiments on the test bench. The additional software enables to easily introduce changes into the virtual front panel, to set different tasks during experiments and even change types of secondary power supply sources under investigation.

Keywords

• trainer
• integrated circuit
• linear voltage regulator
• virtual front panel
• programming of new virtual front panel
• programming of new laboratory experiments