No one likes a flickering light source, but lighting is often dependent on the quality of a building’s main AC power. Light intensity has a close relation to the supply voltage, but bulb type plays a ...

What if ultrafast pulses of light could operate computers at speeds a million times faster than today's best processors? A team of scientists, including researchers from the University of Arizona, are ...

The applications of eye-tracking devices are endless, which is why we always get excited to see new techniques in measuring the absolute position of the human eye. Cornell students [Michael and John] ...

A single phototransistor mimics retinal bipolar cell function while detecting visible and infrared light, enabling low-power image processing through programmable ON and OFF photoresponses. (Nanowerk ...

This applications note presents some basic facts about phototransistors including its different architectures commonly used in the industry. It discusses its operation and how things work inside these ...

A designer who uses a phototransistor to convert a modulated optical signal to an electrical signal frequently encounters problems when high-intensity background light saturates the phototransistor.

Inspired by mammals' eyes, electrical engineers have created the fastest, most responsive flexible silicon phototransistor ever made. Inspired by mammals' eyes, University of Wisconsin-Madison ...

Researchers in Taiwan say they have created a new chlorophyll-coated graphene phototransistor that is much more sensitive to light than devices made of pure graphene. The researchers believe that the ...

Electrical engineers from the University of Wisconsin have developed a flexible silicon phototransistor, which to date is the fastest and most responsive ever created. The innovation has the potential ...

WEST LAFAYETTE, Ind. – Researchers have solved a problem hindering development of highly sensitive optical devices made of a material called graphene, an advance that could bring applications from ...

Vishay Intertechnology, Inc. is broadening its optoelectronics portfolio with the release of six low-input current optocouplers with phototransistor output in the DIP-4, SSOP-4 half-pitch miniflat, ...