FET and vacuum-tube voltmeters
It was mentioned that a good voltmeter will disturb the circuit under test as little as possible,and this requires that … Read more
measuring devices
Multimeter- Principle and operation
In the electronics lab, a common piece of test equipment is the multimeter, in which different kinds of meters are … Read more
Ohmmeter- basic principle and working
You know that the current through a circuit depends on the resistance. This principle can be used to manufacture a … Read more
Voltmeter- Principle and operation
Current is a flow of charge carriers. Voltage, or electromotive force (EMF), or potential difference, is the “pressure”that makes a … Read more
Electrical Measurements|Measuring devices for Electrical quantities
Electrical Measurements Many measuring devices work because electric and magnetic fields produce forces proportional to the intensity of the field. … Read more