In a receiver stage of an optical sensor, which device energizes the contacts when illuminated?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the OCC SACA Sensor Logic Systems 1 (C-205) Exam. Study with detailed questions and insightful explanations. Get ready for your certification!

Multiple Choice

In a receiver stage of an optical sensor, which device energizes the contacts when illuminated?

Explanation:
In the receiver stage, the device that energizes the contacts when illuminated is the photodiode. A photodiode is a light detector that generates a small electrical current when it absorbs photons. Light from the transmitter (such as an LED or laser) reaches the photodiode,-producing a photocurrent that the circuitry can sense and use to drive the output contacts. The other options are light sources, not detectors: a transmitter emits light, and LEDs or lasers are used to emit light rather than to sense it. So the photodiode is the component that converts light into an electrical signal to energize the contacts.

In the receiver stage, the device that energizes the contacts when illuminated is the photodiode. A photodiode is a light detector that generates a small electrical current when it absorbs photons. Light from the transmitter (such as an LED or laser) reaches the photodiode,-producing a photocurrent that the circuitry can sense and use to drive the output contacts. The other options are light sources, not detectors: a transmitter emits light, and LEDs or lasers are used to emit light rather than to sense it. So the photodiode is the component that converts light into an electrical signal to energize the contacts.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy