H21A3 Sensors, Transducers

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optical sensors play an increasingly important role in our modern world. These sensors are used to detect a variety of physical personnel and convert them into electronic signals. Photointerruptors are a type of optical sensor, they detect the interruption of a beam of light, and then convert it into an electrical current. The H21A3 is a slot-type, transistor output photointerrupter whose primary applications include controlling motors, counter systems and robotic systems.

The working principle of the H21A3 is quite simple. It consists of an infrared transmitter diode and an infrared receiver diode placed on either side of a slot. Each diode is equipped with a lens and then configured for transmitting and receiving an infrared beam. When the beam passes though the slot uninterrupted, both the transmitting diode and the receiving diode are able to detect the beam and output a signal. If an obstruction is detected between the diode, such as a finger, the beam is blocked and the transmitting and receiving diode will not detect the beam. This breaks the circuit, preventing the output signal from the diode, and thus allowing the user to detect the presence or absence of an object.

The H21A3 can be used in a number of different applications, such as controlling motors, counter systems, and robotic systems. For motor control applications, the H21A3 can be used to sense the presence of an object and then turn the motor on and off accordingly. For counter systems, the H21A3 can be used to increment a counter whenever it detects an obstruction. And for robotic systems, the H21A3 can be used to detect the presence of an object and then signal a robotic arm to take action.

The H21A3 is designed to work efficiently and reliably in a variety of environments. It is rated for operation temperatures ranging from -40°C to +85°C, and is protected by a dust-resistant housing, so it won’t be easily damaged by dust or other particles. It also features adjustable sensitivity, so users can adjust the settings to better suit their given application.

The H21A3 is a reliable and efficient optical sensor, and its applications are widely applicable. With adjustable sensitivity, robust construction, and a wide temperature range, the H21A3 is the perfect solution for applications where a reliable, accurate detection of the presence or absence of an object is required.

The specific data is subject to PDF, and the above content is for reference