Traditional Culture Encyclopedia - Traditional stories - How many kinds of automobile relays are there?
How many kinds of automobile relays are there?
1. According to the purpose, it can be divided into two types: functional relay and control relay. For example, flash relays and wiper relays belong to functional relays, while ordinary relays that only start the circuit on and off belong to control relays.
2. According to the contact state, it can be divided into three types: normally open type, normally closed type and mixed type.
3. According to the control mode, current-mode and voltage-mode current-mode control relays are relays that act according to a certain current value; It forms a practical circuit with other components, such as the flash relay on the car. The greater the current, the higher the flashing frequency.
4. According to the connection mode, it can be divided into column type and plug type.
5. According to the protection mode, it can be divided into resistance protection type and diode protection type. Relays use small current to control large current.
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