CMD4825

Series:	CMD48
Packaging:	Bulk
Part Status:	Active
Mounting Type:	Chassis Mount
Circuit:	SPST-NO (1 Form A)
Output Type:	AC, Zero Cross
Voltage - Input:	4 ~ 32VDC
Voltage - Load:	48V ~ 530V
Load Current:	25A
Termination Style:	Screw Terminal
Package / Case:	Hockey Puck
Supplier Device Package:	--

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Solid State Relays

Solid state relays (SSR) are devices used to control the flow of electricity in an electrical circuit. They are designed to replace traditional electromechanical relays in many applications. SSRs are used to control the pitch motors, fuse blades, measuring instruments, contactors, and other electrical devices. SSRs have two types: electrical polarity type and audio type. The CMD4825 is an audio type SSR.

CMD4825 Application Field and Working Principle

The application field of CMD4825 include audio amplifier, speaker, radio frequency transmission and other similar products. It is mainly used in the power switch of the audio power amplifier. It is mainly composed of two parts: a power switch and a control chip. The activating principle of CMD4825 is to use a small current to control the topology of the voice power amplifier, such as turntables, mixers, high-power amplifiers, etc., to provide the current that can control high-power supplies and audio signal transmission. The design of CMD4825 is based on a linear control topological amplifier for transistor switching. The amplifier can be formed by connecting a few transistors in parallel. The working principle of CMD4825 is similar to that of a transistor switch. When a small current is applied to the control port, the transistor is turned on and the output port of the transistor is directly connected to the power supply, providing a large amount of current to the load circuit. When the small current is removed, the transistor is turned off.The CMD4825 is designed to provide protection against current overload and short circuits by incorporating overvoltage protection circuitry. The output current is limited to a safe level and the power supply is automatically disabled when the current exceeds the safe level. To ensure the long life of the relay, the power switch circuit uses the control chip of the SSR to control the power switch and the output voltage.In summary, CMD4825 is an audio type solid state relay which has wide application range in audio amplifier, speakers, radio frequency transmission and other similar products. It operates with a small current to control the topology of the voice power amplifier. Furthermore, this SSR provides protection against current overload and short circuits while ensuring the long life of the relay.

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