While components are often integrated into a package, such as SoC and single-board computers, it can be argued that one type of component, connectors, is always round. In this article. It will learn the basics of connectors, why choosing the right one is important for any design, and some common examples of terminal blocks. brass nuts manufacturer
While electronic circuits can process signals and produce outputs, they almost always need to be connected to external components, power supplies, inputs, or outputs. These connections are made using connectors and come in many different sizes, shapes, sizes and ratings. Choosing the wrong connection for your design can cause a variety of problems, from multiple product sizes to burning components, so it’s important to understand the different types of connections. And although there are many types of connectors (such as pin heads, sockets, DIN, and DB), this article will focus on terminal blocks that are found in almost every industry, from home wiring to industrial rack systems. connects to different I / Os.
Terminal block at a glance
Terminal blocks connectors that terminate a wire. And connect it to a circuit or other system. Terminal blocks available in various shapes, sizes, and ratings. But always terminate in a single wire (pole). And are never multipole. Terminal blocks can use as rows. But each terminal connects to only one wire. The terminal block connection is very useful in situations that require a semi-permanent connection that may require inspection, wiring, repair, and replacement (that is why terminal blocks are so common in home wiring and industrial environments). Although not all terminal blocks have contact pads or PCB feet, they always have a good mechanical body made of plastic or other insulating material.
The most common way to connect the terminal blocks is to use a screw into which the wires are inserted and then clamped with a screw. Large terminal blocks used in large cables usually have a screw that pushes the wire against the metal body, while terminal blocks used in thinner wires use a screw that pushes the lever or flat head. Other terminal blocks may use screwless levers, which can be considered as a fish trap; the thread is retracted and the liver lower, preventing the thread from being pulled back. Another type of terminals are terminal blocks with screws for holding a plugged-in cable at one end and a plug at the other end so that the block can plug into a socket (this allows hot-swap). Terminal block types
Screw terminals are those that have a screw as a means of holding a cable or wire. Flat screws are more common and these types of terminals often occur in situations where voltage and current requirements may be mild (domestic / commercial wiring). While the wires tied to the terminal block are not physically connected by solder, they are extremely strong when made correctly and can be used in permanent situations. Be very careful when tightening the terminal blocks, as excessive tightening will damage the inserted cable and cause an unreliable and dangerous connection.
These are very similar to screw terminals because. They use screws as a mechanism for holding cables. Barrier terminals usually have more than one end point for many cables and. As a result, there small barriers between the individual terminals. Barrier terminals may also have small covers. And covers for additional cable protection and often occur in home cables. And other high voltage scenarios that should prevent arcing or potential short circuits.
Pluggable terminals block use small spring levers that allow the cables to move the terminal block in one direction but do not allow it to leave, effectively keeping the wire in place; hence the name “push-fit”.
This type of connector has some advantages over screw terminals in that it prevents over-tightening, but as a result, the designer relies on a spring with sufficient force to keep the wire in contact with the conductive. Another problem with push-on tips is that some are not intended for re-use and lack liver removal, which can be difficult to repair because entire tips may need to be replaced.
Plug-in terminal blocks are those that have a cable entry for connection to a wire or cable, but an output plug for easy connection to an outlet. These types of terminal blocks especially useful in situations where hot-swapping may be important or the connection expected to be removed for service or inspection. Screw connectors the most common type of built-in cable connection, but the screw always has a small metal plate at the end that allows you to grip both small and large cables.
How to choose a terminal for you
Choosing the right type of connection for your application may seem trivial. But in reality, more complicated than you may realize. Aspects of the terminals blocks to consider the general current requirements, voltage requirements, conductor used, mechanical strength. And environment.
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Current requirements are the most important aspect to consider. As too much pressure in the terminal block can cause overheating. And thus damage the terminal block. If you’re looking for a terminal block. Make sure the selected block actually handles the current one you expect to use. And 50 percent more. For example, if the expected current of 2 A take from the block. Then a terminal block with a rated current of 3 A is sufficient.
As with this drawing, stress must also take into account. The voltage causes dielectric breakdown problems, so a voltage that is too high. For the terminal block can cause current leaks between adjacent terminal blocks. However, high voltage requirements always unique in design, so for voltages below 100 V, voltage considerations often ignored. However, it is important that this number check before selecting the terminal block!
Not all fibers the same. And every fiber type has its advantages and disadvantages. For example. If you choosing a brass block for a cable. You need to make sure you know the size of the cable does it fit physically on the brass block? And also whether it is single-core or multi-core. Multi-core wire works best with screw terminals, while single-core wire works best with push-fit connectors.
Environmental / mechanical resistance
The environment is an important aspect to consider when selecting a terminal block. Some terminal blocks may mechanically strong and able to handle high currents. But if the connection use in a marine environment. Salty air can damage the metal contacts. The environment can also have wide tempered fluctuations or mechanical vibrations, so the screw ends are unreliable.
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