Sep 23, 2024 | Articles, Fundamentals of Power Management
In the world of electrical engineering, understanding the concepts of power factor, real power, and apparent power is essential for optimizing electrical systems and ensuring efficient energy use. These concepts are fundamental to both residential and industrial...
Aug 19, 2024 | Articles, Fundamentals of Power Management, Resistance Measurement
In the ever-evolving landscape of electronic measurement instruments, safety and efficiency are paramount. Valhalla set a significant precedent with the 4314AF, an advanced instrument that introduced a crucial safety feature to prevent the charging adapter from being...
Jul 16, 2024 | Articles, Fundamentals of Power Management, Resistance Measurement
When it comes to accurately measuring the resistance of inductive loads, such as transformers and motors, precision is paramount. One of the most reliable methods for achieving this is 4-wire resistance testing. In this post, we’ll delve into what 4-wire...
Jun 17, 2024 | Articles, Fundamentals of Power Management, Resistance Measurement
The Crucial Role of Igniter Testers in the Aerospace & Defense Industry In the highly intricate and safety-critical aerospace and defense industry, ensuring the reliability and functionality of every component is paramount. One such crucial component is the squib,...
Nov 12, 2018 | Articles, Fundamentals of Power Management
Although all Valhalla wattmeters are compatible with general purpose current transformers, there are distinct accuracy and bandwidth advantages to using a current shunt when making a power measurement. Current shunts generally provide greater accuracy over a broader...
Nov 12, 2018 | Articles, Fundamentals of Power Management
For Distorted Waveshapes of All Types The success of the Valhalla 2100 series wattmeter design is centered around a four-quadrant multiplier. The significance of the four quadrant theory is to provide a proper computation for watts under any phase relation between...
Nov 12, 2018 | Articles, Fundamentals of Power Management
The AC power drawn from the source (e.g. line – 120VAC @ 60Hz 220VAC @ 50Hz) is the integral over one cycle of the instantaneous watts values. As shown in figure C, during a portion of each cycle power is used by the inductive device (e.g. electric motor), while...
Nov 12, 2018 | Articles, Fundamentals of Power Management
When describing the amplitudes of electronic devices, terms such as “volts RMS” or “amperes RMS” are used. The RMS (root mean square) of a sine wave produces the same “heating effect” as an equivalent DC voltage level. (i.e. 5...
