This LED DC voltage indicator circuit is a voltmeter, rather than simply a battery tester. As such it may measure voltages as low as 3V. It utilizes venerable LM741 operational amplifiers applied as ...

A novel supply voltage monitor which uses a LED to show the status of a power supply. This simple and slightly odd circuit can clearly show the level of the supply voltage (in a larger device): as ...

February 1, 2012 -- HDE's DVI-100 and DVI-500 Series Digital Voltage Indicators are designed to be used on both transmission and distribution systems in overhead and underground applications. The ...

Medium-voltage indicators (2-43 kV) keep workers away from voltage and lets them know if there’s voltage or not. The indicator is a single-phase device mounted onto each phase of a power bus. Energy ...

Voltage is displayed on a large LED display with a 2 or 3-digit readout. HDE’s DVI-100 and DVI-500 Series Digital Voltage Indicators are designed to be used on both transmission and distribution ...

Researchers have built a tiny, lightweight microscope that captures neuron activity with unprecedented speed that can be used ...

BU neuroscientist and collaborators have developed a multidisciplinary approach using a new microscope, artificial intelligence algorithm, and voltage indicators to better measure brain activity. When ...

All safety -- especially electrical safety -- is personal to employees. Little else matters to them unless electrically safe work conditions can be created and maintained through their work ...

"An increased understanding of how neural circuits guide behavior and cognition could lead to new treatments for a variety of neurological disorders and neurodegenerative diseases," said Emily Gibson ...

All safety -- especially electrical safety -- is personal to employees. Little else matters to them unless electrically safe work conditions can be created and maintained through their work ...