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Optical transducer

The optical transducerĀ  convert light into electrical quantity. They are also called as photoelectric transducers. The optical transducer can be classified as photo emissive, photoconductive and photovoltaic transducers. The photo emissive devices operate on the principle that

Advantages and disadvantages of electronic multimeter

There are some advantages of electronic multimeter which are given below, The input impedance is high. The frequency range is high. The construction is rugged. The circuit is simple. It is less suffered from electric noise. The

Conduction of current through P type semiconductor

When we connect a battery across a P type semiconductor let us see that what happens. The free electrons and holes experience the force towards the battery terminals. The free electrons will tend to move towards the

Conduction of current through N type semiconductors

Let us see what happens if we connect a battery across an N type semiconductor as shown in below figure. The free electrons and holes experience the force towards the battery terminals. The free electrons will tend

Temperature effect on conductivity

An intrinsic semiconductor at absolute zero, behaves as a perfect insulator. The amount of energy required to break a covalent bond is 0.72 eV in case of germanium and 1.11 eV in case of silicon. Equivalently, we

Advantages, disadvantages and applications of piezoelectric pressure transducer

There are some advantages of piezoelectric pressure transducer which are given below, Rugged construction and small size. Excellent frequency response. High output with negligible phase shift. There are some disadvantages of piezoelectric pressure transducer which are given

Capacitor testing with ohmmeter

Three capacitor defects are detectable with an ohmmeter are short, open and partial short. If the capacitor is in a ciruit, it must be separated by disconnecting one lead. The shorted capacitor has a dilectric breakdown. When

Types of logic analyzer

There are two types of logic analyzers which are given below, Logic timing analyzer Logic state analyzer Logic timing analyzer : In this device, the data is sampled according to a clock signal generated at regular intervals

What are the semiconductor materials?

The example of semiconductor materials are germanium (Ge), silicon (Si), carbon (C), selenium (Se), gallium arsenide (GaAs), cadmium sulphide (CdS) etc. A large number of semiconductor materials are known, but the most frequently used in applications are

Advantages and disadvantages of bridge rectifier

Advantages: Transformer utilization factor, in case of a bridge rectifier, is higher than that of a centre-tap rectifier. It can be used in application allowing floating output terminals, i.e. no output terminal is grounded. The need for
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