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Nouns about electronic component symbols, inductor symbol noun explanation

Nouns about electronic component symbols, inductor symbol noun explanation

August 11 , 2023 0

Resistor Series

Resistor is a current-limiting element, which is represented by the letter R, and the unit is ohm Ω. After connecting a resistor to a circuit, the resistor is generally two pins, which can limit the size of the current that passes through the branch circuit it is connected to. A

resistor whose resistance value cannot be changed is called a fixed resistor. Those with variable resistance are called potentiometers or variable resistors. The resistance value of a resistive element is generally related to temperature, material, length, and cross-sectional

area. The physical quantity that measures the resistance affected by temperature is the temperature coefficient, which is defined as the percentage change in resistance value for every 1°C rise in temperature. The main physical characteristic of resistance is that it

converts electrical energy into thermal energy, or it can be said that it is an energy-consuming element, and the current passing through it generates internal energy. Practical devices such as light bulbs, electric heaters, etc. can be expressed as resistor elements.

Resistors usually play the role of voltage and current divider in a circuit. For signals, both AC and DC signals can pass through resistors.

Adjustable Resistors/Trimmable ResistorsAdjustable resistors are also called variable resistors (Rheostat). The size of the resistance value of an adjustable resistor can be artificially adjusted to meet the needs of the circuit. Adjustable resistors can be divided into many

different models and types according to the size of the resistance value, the range of adjustment, the form of adjustment, the production process, the production materials, the size of the volume and so on, divided into: adjustable resistors for electronic components,

adjustable resistors for ceramic discs, adjustable resistors for chip, adjustable resistors for wirewound and so on.

Potentiometer

Potentiometer (Potentiometer) is with three leads, resistance value can be adjusted according to a certain pattern of change of resistance components. Potentiometer usually by the resistor body and can move the brush composition. When the brush moves along the

resistor body, in the output that is obtained with the displacement amount into a certain relationship between the resistance value or voltage. Potentiometers can be used as either three-terminal or two-terminal components. The latter can be regarded as a variable

resistor, which is called a potentiometer because its function in the circuit is to obtain an output voltage in relation to the input voltage (applied voltage).

Capacitor

Capacitor (capacitance), usually referred to as its ability to hold charge as capacitance, expressed by the letter C, the unit is F (farad). Any two insulated and close to each other between conductors (including wires) constitute a capacitor.

Functions: isolation, coupling, bypass, filtering, tuning circuits, energy conversion, control and so on.

Inductance

Inductor (Inductor) is able to convert electrical energy into magnetic energy and stored components. The structure of the inductor is similar to the transformer, but only one winding. Inductor has a certain inductance, it only impedes the change of current. If the

inductor is in a state where no current passes through it, it will attempt to impede the flow of current through it when the circuit is open; if the inductor is in a state where current passes through it, it will attempt to maintain the current unchanged when the circuit is

open. Inductors are also known as chokes, reactors, and dynamic reactors. The characteristics of an inductor are the opposite of those of a capacitor; it has the property of preventing alternating current (AC) from passing through it while allowing direct current (DC) to

pass through it without difficulty. DC signal through the coil resistance is the wire itself resistance voltage drop is very small; when the AC signal through the coil, the coil will produce self-induced electromotive force, self-induced electromotive force of the direction

and the direction of the applied voltage is opposite to the direction of the obstacle to the passage of the AC, so the characteristics of the inductor is to pass the DC, blocking the AC, the higher the frequency, the greater the coil impedance. Inductors often work

together with capacitors in circuits to form LC filters, LC oscillators and so on. In addition, people also use the characteristics of the inductor, the manufacture of current-blocking rings, transformers, relays and so on.

Diode

Diode (Diode) is a device with two electrodes. The most common function of the diode is to allow the current to pass only from a single direction (known as forward bias), reverse blocking (known as reverse bias). Thus, a diode can be thought of as an electronic

version of a check valve. Varicap diodes are used as electronic adjustable capacitors. The directionality of the current in most diodes is often referred to as "rectifying". The early vacuum electron diode; it is an electronic device that conducts current in one direction. A

semiconductor diode has a PN junction and two lead terminals inside, and this electronic device conducts current in one direction according to the direction of the applied voltage. Generally speaking, a crystal diode is a p-n junction interface formed by sintering a p-

type semiconductor and an n-type semiconductor. A space charge layer is formed on both sides of its interface, constituting a self-built electric field. When the applied voltage is equal to zero, due to the difference in the concentration of carriers on both sides of the

p-n junction caused by the diffusion current and the drift current caused by the self-constructed electric field are equal and in a state of electrical equilibrium, which is also the diode characteristics under normal conditions.

Triode

Triode, full name should be semiconductor triode, also known as bipolar transistor, crystal triode, is a semiconductor device to control the current. Its role is to amplify the weak signal into a larger amplitude value of the electrical signal, also used as a non-contact

switch. Triode is a semiconductor substrate on the production of two very close to each other PN junction, the two PN junction to the entire semiconductor is divided into three parts, the middle part of the base area, the two sides of the part of the emitting area and

the collector area, the arrangement of PNP and NPN two kinds.

light touch keyswitch

Light touch button is a key product under a classification of products, it is actually equivalent to a kind of electronic switch, as long as the light press button can be the switch on, release is the switch on the disconnect, the realization of the principle is mainly through

the light touch button inside the metal shrapnel force bouncing to achieve the connection and disconnection.

Micro Switch

Micro switch is a tiny contact spacing and snap action mechanism, with the specified stroke and the specified force for switching action of the contact mechanism, covered with a shell, the outside of the drive lever of a switch, because of its switch contact spacing is

relatively small, so the name of the micro switch, also known as the sensitive switch, snap-action switch. It is used for door switches in anti-theft systems and so on.

Temperature Switch

Temperature switch is a bimetal as a temperature-sensitive element of the temperature switch, electrical normal operation, the bimetal is in a free state, contacts in the closed / open state, when the temperature rises to the action temperature value, the bimetal

element by the heat generated by the internal stress and the rapid action, open / closed contacts, cut off / connect the circuit, thus playing a role in thermal protection. When the temperature drops to the re-set temperature, the contact will be closed/disconnected

automatically to restore the normal working condition. Widely used in household electrical motors and electrical equipment, such as washing machine motors, air conditioning fan motors, transformers, ballasts, electric heating appliances.

Relay

Relay (relay) is a kind of electric control device, is when the input quantity (excitation quantity) changes to meet the specified requirements, in the electrical output circuit so that the controlled quantity to occur a predetermined step change of a kind of electrical

appliances. It has an interactive relationship between the control system (also known as input circuit) and the controlled system (also known as output circuit). Usually used in automated control circuits, it is actually a kind of "automatic switch" that controls the

operation of large currents with small currents. Therefore, in the circuit plays a role in automatic regulation, safety protection, switching circuits.

Thermal Cutoffs

Temperature fuse is also called thermal cutoff, is the temperature sensing circuit cutoff device. Commonly used in: hair dryers, irons, rice cookers, electric stoves, transformers, electric motors, water dispensers, coffee pots, etc., the temperature fuse operation can not

be used again, only in the melting temperature action once.

Silicon Controlled

Thyristor (Silicon Controlled Rectifier) SCR for short, is a high-power electrical components, also known as thyristors. It has a small size, high efficiency, long life and other advantages. In the automatic control system, can be used as a high-power drive parts, realize the

control of high-power equipment with small power controls. It has been widely used in AC and DC motor speed control system, power control system and follower system. Thyristor is divided into unidirectional thyristor and bi-directional thyristor two kinds.

Bidirectional SCRs are also called triacs, or TRIACs for short. bi-directional SCRs are structurally equivalent to two unidirectional SCRs connected in reverse, which have a bi-directional conduction function. The on-off state is determined by the control pole G. A positive

pulse is applied to the control pole G. In the control pole G plus a positive pulse (or negative pulse) can make its positive (or reverse) conduction. The advantage of this device is that the control circuit is simple and there is no reverse voltage withstand problem, so it is

especially suitable for use as an AC non-contact switch.

Acoustic Surface Filter

Acoustic surface filter is a piezoelectric effect in a piece of material on the substrate evaporated layer of metal film, and then by photolithography, at each end of the formation of a pair of forked finger-shaped electrode composition. When the signal voltage is added

to the transmitter transducer, an electric field is formed between the input fork finger electrodes so that the piezoelectric material mechanical vibration (i.e., ultrasonic) in the form of ultrasonic waves to the left and right sides of the propagation to the edge of the side

of the energy absorbed by the absorbing material. At the receiving end, the mechanical vibration is converted into an electrical signal by the receiving transducer and output by the fork-finger electrode. A crystal resonator is a quartz crystal resonator made of quartz

material, commonly known as a crystal oscillator. Play the role of generating frequency, with stable, good anti-interference performance characteristics, widely used in a variety of electronic products.

Bridge Rectifier Diode

Bridge rectifier that bridge rectifier (Bridge Rectifiers), also known as rectifier bridge stack, is the use of diode single conductivity for rectification of the most commonly used circuits, commonly used to convert alternating current into direct current.

Photoelectric Devices

Optoelectronic devices are devices made according to the photoelectric effect called photoelectronic devices, also known as photosensitive devices. There are many types of optoelectronic devices, but their working principle is based on the photoelectric effect of the

physical basis. The main types of photoelectric devices are: photoelectric tube, photomultiplier tube, photoresistor, photodiode, phototransistor, photocell, photocoupling device.