Electronic Equipments

Aside from hand tools, equipment are also needed for more accurate and quality output. In this connection, three (3) of the most used equipment are presented here for you to be familiar with their uses and the proper way of maintaining them. 

1.Volt-Ohm-Milliammeter (VOM)

It is an equipment that combines three functions: as a voltmeter that measures both ac and dc voltages; an ohmmeter that measures resistance; and milliammeter that measures small amount of dc current. 

As safety precautions in the maintenance of this instrument, the following should be observed:

• Always rest the function switch at 250V AC if an OFF position is not available in the instrument. 

• For current and voltage measurements, always set the function switch in the correct setting which is a little higher than the expected current or voltage present in the circuit. This is to avoid damage of the instrument. In correct setting can make the instrument blown.

• For resistance measurements, do not perform it in a live circuit or circuits with existing power supply. It will make your instrument blown up.

• Place the instrument in a cool dry place, away from any magnetic devices, and free from vibrations. 

2. Oscilloscope

An oscilloscope (commonly abbreviated CRO, for cathode-ray oscilloscope, or scope) is a piece of electronic test equipment that allows signal voltages to be viewed, usually as a two-dimensional graph of one or more electrical potential differences (vertical axis) plotted as a function of time or of some other voltage (horizontal axis). 

3. Signal Generator

A signal generator is a device which produces simple wave forms. 

Such devices contain an electronic oscillator, a circuit that is capable of creating a repetitive waveform. These are typically used in simple electronics repair and design where they are used to stimulate a circuit under test. 

Oscilloscope and signal generator should be given regular checkup for at least once a week by connecting them in the power line. This will help prevent their components from having moisture that might cause trouble in their circuits.