When playing audio, we always have to come across a variety of interfaces. If you don't understand what will happen, you don't know how to use it, and you don't know why it doesn't. This is not an alarmist, because some interfaces seem to be the same, but the implementation principle is completely different.
Even if you know it, can you know what it is inside? Looks like a simple connector, how does it work? For example, the seemingly simple 3.5mm connector, why two channels of Dongdong, it has a share Three paragraphs? Don't worry, the author will answer questions for everyone.
Almost all electrical interfaces are divided into two categories in the market: "male" and "female", and if you change the word, you may know more clearly, "male" corresponds to "joint", "mother" The head "corresponds to the "jack". OK, let's take a look at the most common types of headers.
The most common analog interface - 3.5mm stereo interface (small three core interface):
3.5mm stereo connector
The 3.5mm stereo interface is also called the small three-core interface. This is the most important sound card interface we have seen so far. Most consumer sound cards (including onboard sound cards) use this type of interface.
3.5mm stereo interface female port
The 3.5mm interface provides stereo input and output functions, so in general, a 5.1 sound card (6-channel) or speaker is required, and three 3.5mm stereo interfaces are required to connect the analog speakers (3&TImes; 2 channels=6) Channel); 7.1 sound card or speaker requires 4 3.5mm stereo interfaces (4 & TImes; 2 channels = 8 channels), and so on.
In order to adapt to different equipment requirements, the same type of interface can currently see three sizes, 2.5mm, 3.5mm and 6.22mm joints. The 2.5mm connector is more common in portable and light-weight products of mobile phones, because the interface can be made very small; the 3.5mm interface is more common in PC products and household equipment, and is the most common type of interface; the 6.22mm connector is for Analog connectors designed to improve contact and durability are common on professional audio equipment such as monitors.
Let's call the name of the small three-core interface. We see that this type of interface has two rings, which are plastic materials, which are obviously used for insulation. Then there are three wires corresponding to each other.
According to the actual use needs, we can also see this kind of interface with 4 cores or even 5 cores, but the spacing between the conductive and insulating surfaces is certain. The 4-core 3.5mm interface that I contacted was seen on the Panasonic tape player. The extra line should be used to transmit the wire control signal. It can be seen that such an interface does not necessarily transmit analog signals.
In addition, the number of cores can also be reduced. For example, a microphone product requires only two cores, and only one layer of the insulating layer is sufficient.
3.5mm stereo interface
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