H12WD4875PG

Solid state relays (SSRs) have been widely used in many working fields due to their unique advantages, such as high switching speed, long lifetime and low cost. H12WD4875PG is also a type of SSRs with these advantages, and it is widely used in many electric control fields. In this article, we will explore its application field and working principle.

In terms of application fields, H12WD4875PG solid state relay is mainly used for heating control, temperature control, electric light control, electric switch and motor control, industrial control, home automation and other industrial control systems. It can be used to control the output electric load with a high switching frequency and wide adjustable temperature range. Compared with traditional electromagnetic relays, this type of SSRs can be used in a wider range of applications with better performance.

Next, we are going to talk about the working principle of H12WD4875PG SSR. In essence, solid state relays are switch devices that use semiconductor devices to switch on or off an electrical load. H12WD4875PG is no exception – it is composed of a driving circuit, photoelectric detection and zero cross switching. The driving circuit is composed of a photoelectric triode and a zero-cross triode, and the load is connected in series with the output. When electric current passes through the load, the power switch within the device will be triggered to turn on or off the signal. The zero-cross switching ensures the output of the electric current is zero when the relay is turned on. This process is repeated until the electric current reaches the set value, and then the power switch automatically reaches the tripping state.

To summarize, H12WD4875PG solid state relaysare widely used in many electric control fields such as heating control, temperature control, electric light control and motor control. It has the advantages of high switching speed, long lifetime, low cost and wide adjustable temperature range. Its working principle is to use a semiconductor device to switch on or off the electric current passing through the load, and the zero-cross switching ensures the output of the electric current is zero when the relay is turned on.