Monthly Archives: May 2018

What Are PhotoRelays?

Classification of relays include two main groups—contact type or electromechanical relays and contactless type or semiconductor relays. While sub-groups of the mechanical type include signal relays and power relays, those of the contactless type include the solid-state relays and photorelays. Solid-state relays generally use semiconductor photo triacs, phototransistors, or photo thyristors as the output device, and such relays are limited to AC loads alone. On the other hand, photorelays preferably Read more [...]

Progress in the World of Internet of Things

Although many in the electronics field lambast the Internet of Things (IoT) as an inappropriate or inadequate acronym, IoT is a space to huge to be confined to these narrow adjectives. In reality, IoT requires a blanket description, as it covers a vast arena. Problems arise from compartmentalization and although various spaces such as industrial and medical have established a big head start, others have yet to launch their true separate identities. For the electronics designer this means taking Read more [...]

Nano-Diamonds Help Prevent Lithium Battery Fires

Last year, airline flights banned Samsung Galaxy Note 7s because of its battery-related fires and explosions. Scientists researching the source of the runway beat buildup found the culprit to be small dendrites forming between the anode and cathode of the battery. A materials specialist from the Drexel University at Philadelphia has proposed a low-cost easy solution to preclude dendrite formation. According to Drexel professor Yury Gogotsi, this simply requires mixing nanodiamonds with the regular Read more [...]

What is Better for Quality — Visual or Machine Inspection?

Although the human eye is a wonderfully complex instrument, it has its limitations. For instance, when inspecting objects on the production line, human eye cannot compete with machine vision, as the latter is not only faster, but also accurate to a larger extent. The human eye works in tandem with the brain, allowing us to realize our surroundings. We can recognize things within split seconds, even with their exact shape varying. We can analyze our environment keenly, and although we have a wide Read more [...]

Stepper Motors with Higher Efficiency

Stepper Motors are essentially open loop systems working efficiently when required to produce torque. However, when the motor faces low torque situations, its efficiency falls drastically. By simply closing the current loop, it is possible to make the entire system operate more efficiently. Users find them to be economical as stepper motors offer the advantages of excellent positioning with their simplicity. This feature makes them highly popular for use In general automation tasks such as positioning, Read more [...]

Why Panic Buttons are Going Wireless

Panic buttons or emergency stop switches are extremely important for protecting workers, machinery, and products from catastrophic failures. Traditionally, manufacturers include them with their machinery, and most are hard-wired. However, things are changing and now, these red emergency switches are finally going wireless. When a machine malfunctions, or a critical incident occurs, operators often have to press these last resort switches to bring the system or the entire machine to a halt quickly Read more [...]

Computer Vision & Robotics in Farming

Robots are helping several industries ease labor concerns. This is increasingly so in today’s industrial environment, where the workforce is aging and work output decreasing for lack of efficiency. This includes agricultural fields in both the US and Europe, where the introduction of robots in fieldwork is helping to reduce current labor concerns. New farming standards brought on by natural and chemical resources is increasing the need for precision work, and robots and new technology is helping Read more [...]

Raspberry Pi Drives the Oton Glass

Imagine standing in front of several road signs but unable to locate the one you want, because they are all written in a foreign language. This is the job for the OTON GLASS, a device to capture the image, translate it to a language of your choice, and read it to you in your ear. Not only will this help travelers abroad, but also help people with poor vision and those suffering from dyslexia. Oton Glass is the effort of Keisuke Shimakage, who says he was inspired to develop the device by his father’s Read more [...]

What Are Super-Junction MOSFETs?

Switching power-conversion systems such as switching power supplies and power factor controllers increasingly demand higher energy efficiencies. For such energy-conscious designers, super-junction MOSFETs are a favored solution, as the technology allows smaller die sizes when considering key parameters such as on-resistance. This leads to an increase in current density while enabling designers to reduce circuit size. With increasing market adoption of this new technology goes up, other challenges Read more [...]

How to Select Current Sensors?

To select an appropriate AC current sensor for an application, you must know the operational frequency range and the current rating the sensor will encounter. Additional considerations that you will need to decide are the type of the sensor, its mounting (through-hole or surface mount), turns ratio, and the overall dimensions. Sensor type refers to a sensor only configuration, where a conductor integral to the application forms the primary. Another type could be a complete current transformer where Read more [...]