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 ...

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 ...

Up to now, this battery level indicator design was limited to 12 & 24V applications. In past circuits, the use of fixed resistors greatly simplifies setup. However, fixed resistors resulted in ...

HD Electric Co.'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 up to 500kV. HD ...

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 ...

This overvoltage detector can be connected to any dc power source (Fig. 1). Its purpose is to provide a visual indication of when the voltage exceeds a preset value, which may range from around 3 V ...