DIGITAL MULTIMETER (3 1/2 DIGIT DISPLAY UNIT WITH BUILT -IN A/D CONVERTER CIRCUIT FOR 200 mV, 2V, 20V, 200V RANGES DC AND AC VOLTAGE MEASUREMENTS

Objectives of this experiment:

The 3 digit multimeter demonstrator is intended to provide an opportunity to the student to understand the working Of the instrument. Several test points are provided on the circuit diagram to enable the student to observe the waveforms and to make measurements. The digital multimeter accepts an analog quantity and converts it to an equivalent digital readout. It has the ability to measure a wide variety of values, like DC & AC voltages, from a few millivolts to several hundreds of volts.

Built in regulated power supply: +5V/500mA; -5V/300mA
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms