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Special report

On the shape classification of relay

According to the size of the relay classification: 1) micro relay: the longest side size is not greater than 10 mm relay. 2) subminiature micro relay: the longest side size is greater than 10 mm, but not more than 25 mm. 3) small micro relay: the longest side size is greater than 25 mm, but not greater than 50 mm.

2020-01-02 10:25:13

Main technical parameters of relay

① Rated working voltage: refers to the voltage required by the coil when the relay works normally. According to the type of relay, it can be AC voltage or DC voltage. ② DC resistance: refers to the DC resistance of the coil in the relay, which can be measured with a multimeter.

2019-11-27 15:02:25

Relays are classified according to structural characteristics

Electromagnetic relay: an electrical relay that works by using the suction between the electromagnet core and the armature by the current in the input circuit. Solid state relay: refers to a kind of relay with input and output isolation, in which electronic components perform their functions without mechanical moving components.

2019-11-26 14:22:49

Function of relay

Generally, relays have induction mechanism (input part) which can reflect certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light, etc.); there are actuators (output parts) that can realize "on" and "off" control of controlled circuit; there are coupling isolation between input part and output part of relay Function processing and intermediate mechanism (driving part) for driving the output part.

2019-11-25 13:51:15

Development history of relay

The earliest relay is the electromagnetic relay. It uses the phenomenon that the electromagnet produces and disappears when the electromagnet is on and off to control the opening and closing of another circuit with high voltage and high current. Its appearance makes the remote control and protection of the circuit go smoothly.

2019-11-23 10:39:27

What do the symbols on the relay mean

The relay coil is represented by a rectangular box symbol in the circuit. If the relay has two coils, draw two parallel rectangular frames. At the same time, the text symbol "J" of relay shall be marked inside or beside the rectangular box. There are two ways to express relay contacts: one is to draw them directly on one side of the rectangular box, which is more intuitive.

2019-11-22 10:00:28

Installation method of automobile relay

If the installation direction is consistent with the impact resistance direction of the relay, the performance of the relay can be brought into full play. It is suggested that the shock direction is perpendicular to the movement direction of the contact and armature, which can effectively improve the vibration and impact resistance of the normally closed contact under the non excitation state.

2019-11-20 16:14:25

Working principle of automobile relay

Relay is not only a control switch, but also a control object (actuator). Take the fuel pump relay as an example, it is the control switch of the fuel pump, but the coil of the fuel pump relay can form a loop through the grounding point of the ECU only when the driving triode in the ECU is connected.

2019-11-19 14:05:20

Details of automobile relay

Relay is a kind of automatic control device that the output will jump when the input quantity (electricity, magnetism, sound, light and heat) reaches a certain value. The automotive relay is used in the automobile, which has high load switching power, high shock resistance and vibration resistance. The power supply of automobile is mostly 12V, and the coil voltage is mostly designed as 12V.

2019-11-18 09:10:08

How to test magnetic latching relay

When measuring the resistance between the normally closed contact and the moving point with the resistance gear of the universal meter, the resistance value should be 0 (the contact resistance can be measured in a more accurate way within 100 milliohm); while the resistance value between the normally open contact and the moving point is infinite. It can be distinguished that the contact is normally closed and that contact is normally open.

2019-11-14 15:11:53

Wiring method of time relay

1. Control wiring: consider it as a DC relay; ; 2. Work control: Although the control voltage is connected, whether it works depends on the timer on the panel;

2019-11-13 14:05:40

Main functions of time relay

The main function of time relay is as an executive device in simple program control. When it receives the start signal, it starts timing. After timing, its working contact will open or close, so as to promote the subsequent circuit work. Generally speaking, the time delay performance of time relay can be adjusted within the design range, so it is convenient to adjust its delay time.

2019-11-12 10:47:55

Applicable time range of time relay

Time relay is a very important component in electrical control system. In many control systems, time relay is needed to realize time delay control. Time relay is a kind of automatic control electrical appliance which uses electromagnetic principle or mechanical action principle to delay contact closing or breaking. Its characteristic is that there is a time delay between the signal from the suction coil to the contact action. Time relay is usually used to control the starting process of motor as a function of time.

2019-11-11 09:07:05

Supply voltage of time relay

Asia Dragon Co., Ltd., founded in 1989, is a director unit of China Electronics Industry Association, China relay industry association, Shanghai Electronic Industry Association, and one of China relay export bases. In 2009, Shanghai Baoji Industrial Park was established, with an area of more than 35000 square meters. The company has passed ISO / TS 16949 international quality system certification.

2019-11-07 13:26:00

Performance parameters of time relay

Asia Dragon Co., Ltd., founded in 1989, is a director unit of China Electronics Industry Association, China relay industry association, Shanghai Electronic Industry Association, and one of China relay export bases. In 2009, Shanghai Baoji Industrial Park was established, with an area of more than 35000 square meters.

2019-11-06 14:41:25

Time relay product description

The company has passed ISO / TS 16949 international quality system certification. The products have been certified by UL, cul, TUV, CE, CCC and CQC.

2019-11-05 14:15:07

Product introduction of time relay

Asia Dragon Co., Ltd., founded in 1989, is a director unit of China Electronics Industry Association, China relay industry association, Shanghai Electronic Industry Association, and one of China relay export bases. In 2009, Shanghai Baoji Industrial Park was established, with an area of more than 35000 square meters. The company set R & D, manufacturing, sales in one.

2019-11-04 13:32:48

Product parameters of time relay

The company set R & D, manufacturing, sales in one. Specialized in the production of various small relays, high-power relays, magnetic latching relays, automotive relays, electronic time relays, solid-state relays, temperature controllers, photoelectric controllers, relay sockets and other products. It is widely used in automatic control equipment, electrical and electronic equipment, machine tool equipment, instrumentation, regulated power supply, communication equipment, automotive appliances, household appliances, office facilities and other control fields.

2019-11-01 09:09:37

Time relay specifications

The company set R & D, manufacturing, sales in one. Specialized in the production of various small relays, high-power relays, magnetic latching relays, automotive relays, electronic time relays, solid-state relays, temperature controllers, photoelectric controllers, relay sockets and other products. It is widely used in automatic control equipment, electrical and electronic equipment, machine tool equipment, instrumentation, regulated power supply, communication equipment, automotive appliances, household appliances, office facilities and other control fields.

2019-10-30 14:09:12

Performance of time relay

The company has advanced production and testing equipment, advanced automation, semi-automatic production lines and a number of strictly trained technical and quality management personnel, scientific management to ensure the quality of production products.

2019-10-29 13:08:28