AQH1223A

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Solid state relays (SSR) are a type of electrical switch which uses a form of semiconductor, such as a transistor, to control the switching of an electrical load. SSRs can switch both AC and DC currents and voltages, making them an ideal choice for applications where high power relays or contactors may be too expensive or too bulky for the desired application. The AQH1223A is an example of a solid-state relay designed for DC and low power AC applications.

AQH1223A is a cost-effective single-phase solid state relay. It features zero-crossing control, high power load capability, low power consumption and long lifetime. It has a current rating up to 30A at 25°C ambient, and a power load of 750V. The AQH1223A employs the opto-isolator switched MOSFET (metal-oxide semiconductor field-effect transistor) design, which reduces the cost of the assembly and offers improved noise immunity.

AQH1223A\'s application field covers various DC components such as valves, control motors, pumps, lighting, and other equipments, as well as low power AC components such as heaters, transformers and fans. It is also suitable for applications that require high precision and reliable control. It is a reliable, durable and economical solution that can be integrated in a wide variety of automation systems, such as programmable logic controllers or other control systems.

AQH1223A working principle is easy to understand. It is driven by the opto-isolated input circuit between the control and the load circuit. When power is supplied from the control side and LED inside the opto-isolator is lighted, the output MOSFET will be on, allowing the voltage to pass through to the load. The MOSFET will stay on until the LED is cut or the voltage supply is cut from the control side. The overload protection in the circuit prevents the relay from damaging by over current.

In summary, AQH1223A is a lightweight, efficient and reliable solid-state relay designed to switch low power AC and DC applications. It is a cost effective solution for applications that require high precision and reliability control. It can be easily integrated in various automation systems, and it is protected against overloads. Its working principle is easy to understand.

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