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Terminal blocks, also known as binding posts, are specifically designed for the purpose of connecting a wire to a circuit board. By using a terminal block, it ensures a safe and secure connection that will last for many years. The terminal blocks come in various sizes and types to meet different applications, and each have their own advantages.

In the category of terminal blocks known as ‘wire to board’, the most common type is the 90903-8 terminal block. This type of terminal block is designed to be used in applications where multiple wires are connected to one circuit board. It features a durable design that has an integral clamp that helps to securely hold the wire to the board. The terminal blocks of this type also come with a threaded nut that can be tightened to ensure a firm connection.

The working principle for the 90903-8 terminal block is quite simple and straightforward. When a wire is connected to the terminal block, a contact is made between the wire and the contact bar. This connection allows for the current to flow through the board. The terminal block also contains a shorting spring which keeps the current flowing, ensuring a secure connection. This is important as current flow must be consistent to ensure proper operation of the circuit board.

In many applications, the 90903-8 terminal block is used in combination with a connector block. This allows for the connection of multiple wires to the same board without the need for an additional terminal block. The connector block will ensure the wiring is correctly routed and the contact points are securely connected.

Aside from the 90903-8 terminal block, there are many other types of wires to board terminal blocks that are available for use in various different applications. These include terminal blocks with higher power ratings, those designed for safety applications, and ones that are used for signal and data applications. Each type of wire to board terminal block has its own specific design, features, and capabilities for use in an application.

When it comes to installations, it is important to use the right type of terminal block for the job. The wrong type of terminal block can cause damage to the components and wires and should be avoided. Always select a terminal block with a rating and size that is suitable for the application.

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