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Active components include amplifying components such as transistors, triode vacuum tubes (valves), and tunnel diodes.

On the TRIAC symbol there are three terminals. These are the Gate and two other terminals are often referred to as an “Anode” or “Main Terminal”. As the TRIAC has two of these they are labelled either Anode 1 and Anode 2 or Main Terminal, MT1 and MT2.

The holding current (hypostatic) for electrical, electromagnetic and electronic devices is the minimum current which must pass through a circuit in order for it to remain in the ‘ON’ state. The term can be applied to a single switch or to an entire device. A simple example of holding current is in a Spark gap.

A chopper is a device that converts fixed DC input to a variable DC output voltage directly. In other words, a chopper is an electronic switch that is used to interrupt one signal under the control of another.

The ECL (Emitter Coupled Logic) families, originated in the late 1950s and remain the fastest chips available, but consume more power, and because they use a negative power supply (of -5.2V) have been difficult to interface with other families.

Linearly interpolated fractional delay is equivalent to filtering and re sampling a weighted impulse train (the input signal samples) with a continuous-time filter having the simple triangular impulse response

The working principle of a photodiode is, when a photon of ample energy strikes the diode, it makes a couple of an electron-hole.Therefore, holes in the region move toward the anode, and electrons move toward the cathode, and a photocurrent will be generated.

RAM (Random Access Memory) is the hardware in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device’s processor.

Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer.

Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify.

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