CD421690B

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Thyristors, SCRs (Silicon Controlled Rectifiers), and modules are used for controlling large amounts of electrical power. These components can be found in products such as power supplies, motor drives, relays, and more. The CD421690B is a standard type of thyristor, SCR, and module.

The CD421690B is a 3-phase bridge rectifier module made from 4 x 42A silicon high-power SCRs (Silicon Controlled Rectifiers). It has two main uses: one as a full-wave rectifier and the other as a 6-pulse adjustable-speed motor drive. It also has low-voltage and low-current applications.

In terms of application fields, the CD421690B is widely used in fields where a motor has to be controlled with a large amount of electrical power or where a large current needs to be rectified. These areas of application include power supplies, motor drives, relays, and more. The module can also be used in high-power AC motor control, HVAC (Heating, Ventilation & Air Conditioning) systems, and many other applications.

In terms of its workings, the CD421690B has a bridge rectifier sheath with four SCRs. The sheath is segmented into two equal parts, and each part has two SCRs in a negative-positive configuration. The SCRs are connected in series to form two equal currents. The current in each segment flows in the same direction, and the fourth SCR is connected as a regenerative breaking SCR. The total input voltage is divided between the two halves, and then it is further divided over the positive and negative SCRs in each half.

The four SCRs work together to control the current in the bridge rectifier module. They control the current by changing the gate voltages. The gate voltage is the voltage required to turn an SCR on. When an SCR is turned on, current flows through it; when its gate voltage is decreased, current stops flowing. This is how the four SCRs in the CD421690B module are used to control the electrical power.

The CD421690B is a standard type of thyristor, SCR, and module. It has many applications, such as in power supplies, motor drives, relays, HVAC systems, and many other applications. It is a bridge rectifier module made from four 42A silicon high-power SCRs, and it works by changing the gate voltages of the SCRs. This is how it is used to control large amounts of electrical power.

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