12 pin DJ7122-2.8-10 Automotive Connector Plug Connector PBC Bent Needle Holder

combined switch
(4) Common insurance devices in insurance devices include melting wires, easy melting lines and electricals.
① Fractive wire. The fuse is the most common circuit protection device. It is concentrated in the fuse box and connects with electric equipment.
A melting wire of each branch road
The main reason for the disconnection of the melting wire is the melting and poor contact.
Method of judging the quality of the fuse: whether to fuse through the visual observation; the universal meter detection of the fuse .
The fuse resistance is infinite
② Easy to melt. Easy melting lines are used to protect vehicle circuits and electric equipment with large capacity. It is usually connected to the power line and the line with a large current .
Broken electrical. The electrical disconnection is used in the circuit that is easily overloaded when working normally. It can be divided into two types in the form of action: non -cyclic and cyclic
The non -circulating electrical machine is when the circuit is overloaded, and the dual metal sheet is heated up and bent upward to separate the contact, automatically cut off the circuit, protects the circuit and the power consumption equipment; Film reset .
Circular electrical is when the circuit is overloaded, the dual metal sheet is heated and bended, the contacts are opened, and the circuit is automatically cut off; when the dual metal piece is cooled, automatic reset, closed contact, automatic circuit automatically When connected; when the dual metal sheet is heated again, the contacts are opened again. In this way, the circuit breaker contacts is opened and closed cycle until the circuit is not loaded.
Circular electrical
1.2.2 Automotive circuit composition
Automotive circuits usually include power circuits, starting circuits, ignition circuits, lighting and lighting signal device circuits, instrument information system circuits, auxiliary device circuits, and electronic control system circuits.
(1) The power supply circuit is also called the charging circuit. It is a circuit composed of batteries, generators, regulators and charging indicators. -16).
(2) The launching circuit is a circuit composed of motivation, starting relay, starting switch, and starting a protective circuit. You can also include preheating devices and control circuits at low temperature conditions .
 Starting system
(3) The ignition circuit is a unique circuit of gasoline engine cars. It consists of ignition coil, control unit, spark plug and ignition switch. The electronic ignition control system controlled by microcomputers is generally included in the engine electronic control system .
(4) Lighting and lighting signal device circuits are circuits composed of front lights, fog lights, profile lights, turning lights, brake lights, reversing lights, internal lighting lights and related to control relays and switches.
(5) The instrument information system circuit is a circuit composed of the instrument and sensors, various alarm indicators and controllers .
(6) The auxiliary device circuit is a circuit composed of a variety of electrical devices set up to improve the safety and comfort of vehicles . The types of auxiliary electrical devices are different with the models. The higher the car grade, the more complete the auxiliary electrical device. Generally, the wind window scraping and cleaning device, the defrost (anti -fog) device, air -conditioning device, audio device, etc. The more advanced models are also equipped with window electric lifting devices, electrical control door locks, electric seat adjustment devices, and electric remote control rearview mirrors. Electronic control airbags belong to the electronic control system.

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