AQV258A

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AQV258A Application Field and Working Principle

AQV258A is a type of solid state relay (SSR). An SSR is an electronic switching device with no moving parts for turning on and off power in electrical circuits. AQV258A is a zero-crossing type SSR, where the output voltage is turned on and off in accordance with the zero-crossings of the AC voltage waveform of the controlled system.

AQV258A can be used for applications such as temperature and level control, motor control, heater control, fan control, and lighting control. It works by sensing the zero-crossing of the AC input voltage waveform and then turns on and off the output voltage accordingly. AQV258A has a voltage specification of 24 to 480VAC and 10A of current load.

The AQV258A SSR consists of two solid-state switches, Opto-MOS FET and Silicon Controlled Rectifier (SCR), where Opto-MOS FET switch provides high-speed switching and SCR switch provides precision current regulation. The Opto-MOS FET is responsible for providing the fast turn-on and turn-off rate. This makes AQV258A SSR suitable for applications where high-speed switching is required. The SCR is an electronic device which allows the AQV258A to regulate the current by providing precise current regulation.

The AQV258A SSR also has built-in thermal protection and over-voltage protection. The thermal protection feature of AQV258A ensures that it does not overheat and thus avoids any damage or hazard to connected equipment resulting from overheating. The over-voltage protection helps to protect the AQV258A from a high-voltage surge.

AQV258A also has LED indicator for monitoring the status of the switch. An LED indicator is simply an LED that is connected in series to the output terminals of the SSR. The LED illuminates when the SSR is in an “on” state and dims when the SSR is in an “off” state. This LED makes it easy to visually identify the status of the switch.

To summarize, AQV258A is a solid state relay that is designed for applications such as temperature and level control, motor control, heater control, fan control, and lighting control. It works by sensing the zero-crossing of the AC input voltage waveform and then turns on and off the output voltage accordingly. AQV258A has a voltage specification of 24 to 480VAC and 10A of current load and comes with built-in thermal protection and over-voltage protection. The Opto-MOS FET and SCR switches provide fast-switching and precise current regulation respectively, making it suitable for applications where high-speed switching is required. Lastly, AQV258A also has an LED indicator for monitoring the status of the switch.

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