We are pleased to present below all posts archived in 'June 2010'. If you still can't find what you are looking for, try using the search box.
Using laser optical pulses the random number generator utilizes the time between arrival of random photos to generate the numbers, ensuring true accuracy. Applications could include data encryption, num... read more..
These lifts were first built in 1884 by J. E. Hall and called a paternoster ("Our Father", the first two words of the Lord's Prayer in Latin) due to its resemblance of a loop of rosary beads. The are no... read more..
GE's latest thinking on product manufacturing is he Shingijutsu philosophy or Lean production system. They have started applying this at the Louisville Appliance Park manufacturing facility. The first a... read more..
Three phase systems are derived from three separate windings, either connected in delta or star (wye). Each winding can be treated separately, leading to the idea that the load in each winding can be vi... read more..
Over the past year or so I've been involved in on going discussions related to referring fault levels from the secondary of a transformer to the primary...
GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:
The correct sizing of current transformers is required to ensure satisfactory operation of measuring instruments and protection relays. Several methods...
One of the fundamental requirements of an alternating current distribution systems it to have the ability to change the magnitude of voltages. It is more...
Power factor is the ratio between the real power (P in kW) and apparent power (S in kVA) drawn by an electrical load. The reactive power (Q in kVAr)...
Electrical notes are a collaborative collection of electrical engineering information and educational material. Any registered user can add content. ...
Many medium voltage (MV) indoor switchgear rooms exist worldwide. The complexity of these rooms varies considerably depending on location, function and...
Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...
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