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What are the “NO” and “NC” Contacts of the Relay

We often see “NO” and “NC” in some information related to the relay. However, do you know what do “NO” and “NC” stand for and what are they really mean?

Steps for the Use of Relays

A Relay is an electrically controlled switching device that can control the operation of one or more switching elements by electromagnetic attraction. The following are the basic steps for the use of relays:

Disc Horn or Snail Horn

There are mainly two kinds of automotive horns. They are the snail horn and the disc horn. The disc horn is mostly used in Japanese and Korean vehicles, while the snail horn is mainly used in German cars. There are many differences between the snail horn and the disc horn.

JD Series Relays Replaced by Newly-Developed ZTV4

In order to better meet customer’s application needs and improve the quality, CHINT now carries out structural optimization, production line upgrading and product platformization for JD seriesuniversal relays.ZTV4series relays have been newly developed to replace JD series relays.

A Brief Introduction of the Disc Horn

The disc horn is the most common horn. Because it is shaped like a basin/disc, so it is called “disc horn”. The disc horn is relatively cheap, mostly used in cars of Japanese and Korean models. And the sound of the disc horn is crisp.

Why is a Horn Called “Snail Horn”

The snail horn is a horn that is equipped with a snail-like auxiliary cavity on an ordinary horn, which can improve the sound quality and increase the volume. Because it looks like a snail, it is called the snail horn to distinguish it from the disc horn. Actually, it is called "compound horn", with......

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