PhotoMOS

A PhotoMos signal is a digital signal controlled by a light-sensitive MOSFET (metal-oxide-semiconductor field-effect transistor). The PhotoMos device is a semiconductor relay that uses light to change the state of the transistor between an open and a closed circuit.

When light is shone on the light-sensitive MOSFET, it conducts electricity and allows current to flow through the device, which can be used to activate an external device or switch. If, on the other hand, the light source is removed, the device stops conducting and the circuit is open.

PhotoMos devices offer several advantages over conventional electromechanical relays, including faster switching speeds, lower power consumption and longer life because there are no moving parts.

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