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Relay cards

Introduction

An electric switch (also suiche,[1] suich[2] or switch)[3] is a device that allows the flow of an electric current to be diverted or interrupted. In the modern world its types and applications are innumerable, from a simple switch that turns a light bulb on or off, to a complicated, computer-controlled, multi-layer automatic transfer selector.

Its simplest expression consists of two stainless metal contacts and the actuator. The contacts, normally separated, are joined by an actuator to allow current to flow. The actuator is the moving part that in one of its positions puts pressure on the contacts to keep them together.

Switch classification

Actors

The three-step selector can be normally open, when activating them closes the circuit (the case of the doorbell); or normally closed, when actuating them opens the circuit.

Pushbuttons

Also called momentary switches. This type requires the operator to maintain pressure on the actuator so that the contacts are bonded. An example of its use can be found in the doorbells of houses or apartments.

Number of poles

They are the number of individual circuits that the switch controls. An example of a single pole switch is the one we use to turn on a lamp. There are 2 or more poles. For example, if we want to turn on a 220-volt motor and at the same time a 12-volt indicator light, we will need a 2-pole switch, one pole for the 220-volt circuit and another for the 12-volt circuit.

Number of roads

It is the number of positions that a switch has. Again, the example of the one-way switch is the one used to turn on a lamp: one position turns the lamp on while the other turns it off.

There are 2 or more ways. An example of a 3-way switch is the one we would use to control a traffic light where a light bulb of each color turns on for each position or lane.

Relay cards

Introduction

An electric switch (also suiche,[1] suich[2] or switch)[3] is a device that allows the flow of an electric current to be diverted or interrupted. In the modern world its types and applications are innumerable, from a simple switch that turns a light bulb on or off, to a complicated, computer-controlled, multi-layer automatic transfer selector.

Its simplest expression consists of two stainless metal contacts and the actuator. The contacts, normally separated, are joined by an actuator to allow current to flow. The actuator is the moving part that in one of its positions puts pressure on the contacts to keep them together.

Switch classification

Actors

The three-step selector can be normally open, when activating them closes the circuit (the case of the doorbell); or normally closed, when actuating them opens the circuit.

Pushbuttons

Also called momentary switches. This type requires the operator to maintain pressure on the actuator so that the contacts are bonded. An example of its use can be found in the doorbells of houses or apartments.

Number of poles

They are the number of individual circuits that the switch controls. An example of a single pole switch is the one we use to turn on a lamp. There are 2 or more poles. For example, if we want to turn on a 220-volt motor and at the same time a 12-volt indicator light, we will need a 2-pole switch, one pole for the 220-volt circuit and another for the 12-volt circuit.

Number of roads

Actuator

Contenido

La parte móvil que aplica la fuerza operativa a los contactos se llama actuador, y puede ser una palanca, un pulsador o cualquier tipo de enlace mecánico (véase la foto)..

Polarized Switches

A switch normally maintains its set position once it is operated. A polarized switch contains a mechanism that pushes it to another position when released by an operator. Momentary push button switch is a type of polarized switch. The most common type is a "push to activate" (or normally open or NO) switch, which makes contact when the button is pressed and breaks when the button is released. Each key on a computer keyboard, for example, is a normally open "push to activate" switch. A "push to off" (or normally closed or NC) switch, on the other hand, breaks contact when the button is pressed and makes contact when it is released. An example of a push-to-disable switch is a button used to open a door that is held closed by an electromagnet. The interior light of a home refrigerator is controlled by a switch that remains open when the door is closed.

rotary switch

A rotary switch operates by a rotary movement of the operating handle with at least two positions. One or more switch positions may be momentary (spring deflected), requiring the operator to hold the switch in the position. Other positions may have a detent to hold the position when released. A rotary switch can have multiple levels or "covers" to allow it to control multiple circuits.

One form of rotary switch consists of a spindle or "rotor" that has a contact arm or "spoke" protruding from its surface like a cam. It has a series of terminals, arranged in a circle around the rotor, each of which serves as a contact for the "radio" through which any of several different electrical circuits can be connected to the rotor. The switch is layered to allow the use of multiple poles, each layer is equivalent to one pole. Typically, such a switch has a detent mechanism, so it "clicks" from one active position to another rather than stopping in an intermediate position. Therefore, a rotary switch provides greater pole and throw ratings than simpler switches.

Other types use a cam mechanism to operate several sets of independent contacts.

Rotary switches were used as channel selectors in television receivers until the early 1970s, as range selectors in electrical measurement equipment, as band selectors in multiband radios, and other similar purposes. In industry, rotary switches are used for control of measuring instruments, switching devices") or in control circuits. For example, a radio-controlled overhead crane" may have a large multi-circuit rotary switch to transfer hardwired control signals from local hand controls in the cabin to the outputs of the remote control receiver. In some radio or television receivers, this switch was also used as a potentiometer to control the audio volume.

For their part, cars have a rotary switch to activate the ignition and start the engine. It is activated by means of a key that is inserted into it. It can be located on the steering wheel stem or on the instrument panel.

toggle switch

A toggle switch or socket switch is a class of electrical switches that are manually activated using a mechanical lever, handle, or rocker mechanism.

Toggle switches are available in many different styles and sizes, and are used in numerous applications. Many are designed to provide simultaneous activation of multiple sets of electrical contact, or control of large amounts of current or mains power.

The device refers to a type of mechanism or joint that consists of two arms, which are almost aligned with each other, connected with an elbow-shaped pivot. However, the phrase "toggle switch" applies to a switch with a short handle and a positive instantaneous action, whether it actually contains a toggle mechanism or not. Similarly, a switch on which a definite click is heard is called a "positive on-off switch".[5] A very common use for this type of switch is to turn lights or other electrical equipment on or off. Multiple toggle switches can be mechanically interlocked to prevent prohibited combinations.

In some contexts, particularly computing, a toggle switch, or toggle action, is understood in the different sense from a mechanical or software switch that toggles between two states each time it is activated, regardless of mechanical construction. For example, the Caps Lock key on a computer causes all letters to be generated in uppercase after pressing it once; pressing it again returns to lowercase letters.

Electronic switches

A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switching mechanism, but other operating principles are also used. Solid-state relays control power circuits without moving parts, but instead use a semiconductor device to perform the switching, often a silicon-controlled rectifier or triac.

The analog switch uses two MOSFET transistors in a transmission gate arrangement as a switch that operates much like a relay, with some advantages and several limitations compared to an electromechanical relay.

The power transistor(s) "in a switching voltage regulator", such as a power supply unit&action=edit&redlink=1 "Power supply unit (computer) (not yet drafted)"), is used as a switch to allow power to flow and block the flow of power.

Many people use metonymy to call a variety of devices "switches" that conceptually connect or disconnect signals and communication paths between electrical devices, analogous to the way mechanical switches connect and disconnect paths for electrons to flow between two conductors. Early telephone systems used an automatically operated Strowger switch to connect telephone callers; telephone exchanges contain one or more crossbar switches today.

Since the advent of digital logic in the 1950s, the term "switch" has been extended to a variety of active digital devices such as transistors and logic gates whose function is to change their output state between two logic levels or connecting different signal lines&action=edit&redlink=1 "Digital signal (electronics) (not yet drafted), and even computers, network switches"), whose function is to provide connections between different ports&action=edit&redlink=1 "Computer (hardware) port (not yet written)") in a computer network. The most commonly used electronic switch in digital circuits") is the metal oxide semiconductor field effect transistor ("MOSFET").[6].

The term 'switched' also applies to telecommunications networks"), and means a network that is circuit switched"), which provides dedicated circuits for communication between end nodes, such as the public switched telephone network. The common characteristic of all these uses is that they refer to devices that control a binary state: they are "on" or "off", closed or open, connected or not connected.

Actuator

Contenido

La parte móvil que aplica la fuerza operativa a los contactos se llama actuador, y puede ser una palanca, un pulsador o cualquier tipo de enlace mecánico (véase la foto)..

Polarized Switches

A switch normally maintains its set position once it is operated. A polarized switch contains a mechanism that pushes it to another position when released by an operator. Momentary push button switch is a type of polarized switch. The most common type is a "push to activate" (or normally open or NO) switch, which makes contact when the button is pressed and breaks when the button is released. Each key on a computer keyboard, for example, is a normally open "push to activate" switch. A "push to off" (or normally closed or NC) switch, on the other hand, breaks contact when the button is pressed and makes contact when it is released. An example of a push-to-disable switch is a button used to open a door that is held closed by an electromagnet. The interior light of a home refrigerator is controlled by a switch that remains open when the door is closed.

rotary switch

A rotary switch operates by a rotary movement of the operating handle with at least two positions. One or more switch positions may be momentary (spring deflected), requiring the operator to hold the switch in the position. Other positions may have a detent to hold the position when released. A rotary switch can have multiple levels or "covers" to allow it to control multiple circuits.

One form of rotary switch consists of a spindle or "rotor" that has a contact arm or "spoke" protruding from its surface like a cam. It has a series of terminals, arranged in a circle around the rotor, each of which serves as a contact for the "radio" through which any of several different electrical circuits can be connected to the rotor. The switch is layered to allow the use of multiple poles, each layer is equivalent to one pole. Typically, such a switch has a detent mechanism, so it "clicks" from one active position to another rather than stopping in an intermediate position. Therefore, a rotary switch provides greater pole and throw ratings than simpler switches.

Other types use a cam mechanism to operate several sets of independent contacts.

Rotary switches were used as channel selectors in television receivers until the early 1970s, as range selectors in electrical measurement equipment, as band selectors in multiband radios, and other similar purposes. In industry, rotary switches are used for control of measuring instruments, switching devices") or in control circuits. For example, a radio-controlled overhead crane" may have a large multi-circuit rotary switch to transfer hardwired control signals from local hand controls in the cabin to the outputs of the remote control receiver. In some radio or television receivers, this switch was also used as a potentiometer to control the audio volume.

For their part, cars have a rotary switch to activate the ignition and start the engine. It is activated by means of a key that is inserted into it. It can be located on the steering wheel stem or on the instrument panel.

toggle switch

A toggle switch or socket switch is a class of electrical switches that are manually activated using a mechanical lever, handle, or rocker mechanism.

Toggle switches are available in many different styles and sizes, and are used in numerous applications. Many are designed to provide simultaneous activation of multiple sets of electrical contact, or control of large amounts of current or mains power.

The device refers to a type of mechanism or joint that consists of two arms, which are almost aligned with each other, connected with an elbow-shaped pivot. However, the phrase "toggle switch" applies to a switch with a short handle and a positive instantaneous action, whether it actually contains a toggle mechanism or not. Similarly, a switch on which a definite click is heard is called a "positive on-off switch".[5] A very common use for this type of switch is to turn lights or other electrical equipment on or off. Multiple toggle switches can be mechanically interlocked to prevent prohibited combinations.

In some contexts, particularly computing, a toggle switch, or toggle action, is understood in the different sense from a mechanical or software switch that toggles between two states each time it is activated, regardless of mechanical construction. For example, the Caps Lock key on a computer causes all letters to be generated in uppercase after pressing it once; pressing it again returns to lowercase letters.

Electronic switches

A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switching mechanism, but other operating principles are also used. Solid-state relays control power circuits without moving parts, but instead use a semiconductor device to perform the switching, often a silicon-controlled rectifier or triac.

The analog switch uses two MOSFET transistors in a transmission gate arrangement as a switch that operates much like a relay, with some advantages and several limitations compared to an electromechanical relay.

The power transistor(s) "in a switching voltage regulator", such as a power supply unit&action=edit&redlink=1 "Power supply unit (computer) (not yet drafted)"), is used as a switch to allow power to flow and block the flow of power.

Many people use metonymy to call a variety of devices "switches" that conceptually connect or disconnect signals and communication paths between electrical devices, analogous to the way mechanical switches connect and disconnect paths for electrons to flow between two conductors. Early telephone systems used an automatically operated Strowger switch to connect telephone callers; telephone exchanges contain one or more crossbar switches today.

Since the advent of digital logic in the 1950s, the term "switch" has been extended to a variety of active digital devices such as transistors and logic gates whose function is to change their output state between two logic levels or connecting different signal lines&action=edit&redlink=1 "Digital signal (electronics) (not yet drafted), and even computers, network switches"), whose function is to provide connections between different ports&action=edit&redlink=1 "Computer (hardware) port (not yet written)") in a computer network. The most commonly used electronic switch in digital circuits") is the metal oxide semiconductor field effect transistor ("MOSFET").[6].

The term 'switched' also applies to telecommunications networks"), and means a network that is circuit switched"), which provides dedicated circuits for communication between end nodes, such as the public switched telephone network. The common characteristic of all these uses is that they refer to devices that control a binary state: they are "on" or "off", closed or open, connected or not connected.