Earthing Practice and Power Quality

Earthing Practice and Power Quality

Earth leakage currents arise mainly from the EMC filters built into electronic equipment with switched mode power supplies. Standards limit the leakage current from non-fixed equipment (i.e. equipment that plugs into a standard socket outlet) to less than 3.5 mA. When a lot of electronic equipment is in use, the total leakage current in the protective conductor can become significant.

RCA CMOS Manual

RCA Cosmos Manual

It discusses the basic principles involved in the design and application of COS/MOS digital integrated circuits, and describes many of the circuit building blocks, ranging from basic NOR and NAND gaies to complex phase-locked loops and rate multipliers. 

Computers

IBM Computer

The IBM Personal Computer (model 5150), often referred to as the IBM PC, is the first microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de facto standard. Released on August 12, 1981, it was created by a team of engineers and designers at International Business Machines (IBM), directed by William C. Lowe and Philip Don Estridge in Boca Raton, Florida.

Adventures Inside Atom

Adventures Inside The Atom

Adventures Inside The Atom - *And a few years later, aristotle Added an idea of his own...” 'it must be that all the Thousands of things on Earth are combinations of certain basic Elements.’ “Tell me more. things are made of ‘building blocks smaller than anything you can  Imagine. I call them ‘atoms.’ 

Glow Lamp Manual

General Electric Glow Lamp Manual

General Electric Glow Lamp Manual, Theory-Circuits-Ratings, 2nd Ed., 1966.  This circa 1966 reference manual outlines GE's line of glow lamps or neon tubes including those designed for computer logic, switching, lighting, and indicator lamps.  This work includes numerous application examples, reference implementation schematics and provides technical details for many models of the GE lineup for this category.

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