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Photorelay Toshiba TLP3122A

29.06.2018

Toshiba Electronics Europe has released a new TLP3122A photoelectric switch designed for factory automation systems and other industrial applications, including building automation systems, security systems and semiconductor testing equipment.

The new photo relay uses MOSFETs manufactured using the most advanced U-MOS IX manufacturing process to reduce on-state resistance. The TLP3122A is available in a miniature 6-pin SO4 package, capable of 60 V off-state (VOFF) output, 1,4 A continuous on-state current (ION), and up to 4,2 A surge-on current (IONP) .Typical on-resistance (RON) is only 0,13 ohms for high efficiency performance, and off-state current is only 1 µA.

The device has low switching times: 3 ms (tON, on time) and 1 ms (tOFF, off time). The insulation voltage is 3750 Vrms. The light switch is fully UL1577 certified for safety critical applications.

The TLP3122A photo relay with normally open output replaces mechanical relays with one make contact (1-Form-A) to increase system reliability and save space required to house relays and their drivers. In addition, the TLP3122A is rated to operate from -40 to 110°C, allowing it to be used in industrial applications and easily provide thermal headroom for system-level thermal design.

The new TLP3122A photo relay is directly compatible with the TLP3122 photo relay in the traditional 2.54SOP4 package. It also helps reduce system drive current, making it suitable as a replacement for a wide variety of mechanical relays.

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Exciting movies turn off the brain 12.08.2015

What goes on in our heads when we watch a truly immersive movie? The answer to this question can be found in an article in the journal Neuroscience published by a group of psychologists from the State University of New York at Stony Brook and the Georgia Institute of Technology. What is happening in the brain, which areas are more active, which ones are less, can be found out using functional magnetic resonance imaging. That is, all that was required of the researchers was to show the volunteers lying in the fMRI machine some particularly impressive excerpts from the world's film heritage, and then carefully analyze which brain signals relate specifically to the experienced cinematic sensations.

Ten well-known films were selected for the experiment, from Hitchcock's "North by Northwest" and "The Man Who Knew Too Much" to Ridley Scott's "Alien". Along the edges of the screen on which the movie was shown, light signals flashed from time to time, which were supposed to distract the viewer from the movie. Moreover, distracting flashes were built in a checkerboard pattern, since it is known that it always distracts visual neurons quite strongly.

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In addition to the spur sulcus, there are other areas in the brain responsible for analyzing visual information at a higher level, but they also responded to suspense in a similar way, narrowing attention to the center of the visual field. That is, when we say that we watched a movie, forgetting about everything, this is not a figure of speech at all - the consciousness really stops following what is happening around, and literally we see and hear nothing, except for the movie.

Obviously, the same thing happens in any case when we are completely absorbed in some business.

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