TD2425-B

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Solid State Relays, or SSRs, are switching devices that use a semiconductor as the switching element. They are used to control and switch AC or DC voltages and currents. The TD2425-B is a particular type of SSR. It is an optically isolated triac type, with a zero-crossing opto-coupler. This type of SSR is very reliable and efficient, making it an ideal choice for applications where small amounts of power need to be switched on and off with accuracy and reliability.

Application Field

The TD2425-B is designed for use with medium to low power AC load operations up to 400 Watts. It has a zero-crossing opto-coupler for enhanced noise immunity. Its tight temperature control ensures a stable output performance in extreme environments, making it ideal for use in industrial controls, process control, lighting and heating control, and other applications where precise and reliable switching is needed.

Working Principle

The TD2425-B works on a basic principle. When a voltage is applied to its input terminals, an opto-coupler is activated and a small current is generated through the opto-coupler which is then amplified by the output amplifiers. This amplified current then activates the triac, which then switches the load from its off state to its on state. When that same voltage is removed from the input terminals, the opto-coupler becomes inactive and the amplified current ceases, which then causes the triac to switch off the load. This allows for precise, reliable switching of the load in either direction.

The TD2425-B is a versatile SSR with numerous features designed to provide reliable and accurate switching of low to medium power loads. Its zero-crossing opto-coupler provides greater noise immunity than other SSR designs. Its tight temperature control allows for stable operation even in extreme environmental conditions. And its compact size and easy-to-use design make it a great choice for applications that require accurate and reliable switching.

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