What is Capacitance Level Sensor? Working Principle, Diagram, Construction & Advantages
Figure 1: Capacitance Level Sensor.
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What is Eddy Current Tachometer? Working Principle, Diagram, Construction & Applications
The eddy current tachometer converts the angular speed (ω) of the rotor into pointer deflection ϕ. The diagram of the eddy current type tachometer is shown in figure 1. The eddy current tachometer is also referred as drag-up tachometer.
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What is Phototransistor? Working, Circuit Diagram, Construction, Symbol & Applications
The phototransistor is an optoelectronic device that generates or detects the signals from light incident on it. The symbol of phototransistor is shown in figure (1).
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What is Charge Coupled Device (CCD)? Working, Circuit Diagram, Construction, Symbol, Applications & V-I Characteristics
Charge Coupled Device (CCD) is a simple shift register used to store and transfer analog signals and electrically or optically injected charge carriers. Construction of Charge Coupled Device Figure 2: Charge Coupled Device Structure. The structure of a three-phase charge-coupled device is as shown in figure (1). The basic structure of CCD comprises of
What is Solar Cell (or Photovoltaic Cell)? Working, Circuit Diagram, Construction, Symbol, Applications & V-I Characteristics
A solar cell or photovoltaic cell is a semiconductor PN junction device with no direct supply across the junction. It transforms the light or photon energy incident on it into electrical power and delivers to the load. Figure 1: Solar Cell Symbol.
What is Light Emitting Diode (LED)? Working Principle, Circuit Diagram, Construction, Symbol, Applications & Characteristics
The light-emitting diode (LED) is a light-sensitive diode that emits light when it is forward-biased. Figure (1) shows the symbol of LED. Working Principle of Light Emitting Diode (LED) When a free electron from the higher energy level gets recombined with the holes, emits light or photon energy. Here, in case of LEDs, the supply
What is the Two Transistor Analogy (Model) of SCR (Thyristor)?
Two-transistor model is used to explain the principle of operation of Silicon Controlled Rectifier (SCR). Since, a SCR is a four layered PNPN device, it can be considered as a combination of two transistors, one transistor as PNP and the other transistor as NPN which are connected back to back. Figure 1: Structure of Two-transistor
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