How single dual coil latching relay works

Update:14-11-2022
Single Dual Coil Latching Relay work on a common magnetic field to switch on and off both coils. They are commonly used in electrical wiring and circuits. These relays have four diodes to convert a single-coil signal to a dual-coil signal.Single Dual Coil Latching Relays have three separate pins and a single coil between them. The top coil is usually positive, while the bottom coil is negative. The polarity of the coil is indicated by markings located inside or outside the coil outline. If the markings are outside, the relay has the correct polarity.A single dual coil latching relay is a common type of relay and is used in many applications. One of the most challenging aspects of driving this type of relay is to ensure that the current in the coil is flowing in both directions.

Mini Current Transformer41
Mini Current Transformer41


This is not easy to achieve in practice, so careful consideration is required in the design phase.Single Dual Coil Latching Relays (SDCL) use diode circuits to convert single-coil drive signals to dual-coil signals. This allows system designers to use either type of latched relay. In addition, these relays can be tested using only one signal driver.Using a reverse biased diode can also reduce the risk of damage to semiconductor devices. When used in single dual-coil latching relays, it's important to select the right diode circuits for the application.A latching relay is a type of electrical switch that uses the magnetic force of a permanent magnet to hold its contacts. When the magnetic field is strong enough, a latching relay can either complete or break a single circuit, or it can switch power between two circuits.

Typically, latching relays have two contacts, one of which is a coil.A latching relay consists of a cylindrical case and an integral top wall. The top wall is made of magnetic material, such as steel, and provides a magnetic path for the armature and bobbin. The bobbin is made of an insulating material, such as nylon, and has an axial opening.Single Dual Coil Latching Relays are used in a wide variety of applications. They are suitable for a wide range of voltages and can be operated at different speeds. A basic knowledge of electronics is needed to build this type of device.

The voltage range for this type of relay is between 5V and 24V.The basic circuit for a Single Dual Coil Latching Relay is illustrated in Figure 1. It has three pins and a coil between them. The top coil is positive at the top, while the bottom coil is negative. The base of Q2 is tied to the supply ground, and it is energized when power is applied to it. This allows current to flow through the other coil, which unlatches the relay.Single Dual Coil Latching Relays are popular throughout China, Southeast Asia, Europe, and Africa. The company, GRT, ranks first in the same industry and sells the relays in a wide range of applications. The company is known for its high quality and competitive prices.
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