More about measurement (211)

1-11-2008 | Measuring angles has until now involved a choice between potentiometers and optical encoders. Potentiometers are inexpensive, but have the d...

1-06-2008 | Is it possible to make an RLC meter for less than two pounds? In this article the authors answer this question with a resounding ‘yes’ in th...

1-01-2008 | Carbon dioxide (CO2) is not just a threat to the environment, it is also an important and often ignored factor in determining air quality in...

1-01-2008 | Overall system efficiency is a critical design parameter in battery power systems. It affects both the battery capacity requirement and the...

1-01-2007 | Of all nature’s physical quantities it is time that we know how to measure best. The most advanced atomic clocks are breathtakingly accurate...

1-07-2005 | The arrangement of resistors shown here can be used to test bridge amplifiers with differential inputs. Such amplifiers are used in conjunct...

1-05-2005 | The tiny surface-mount SHT11 sensor module provides calibrated digital readings of temperature and relative humidity. The chip includes two...

1-10-2004 | It’s safe to say that every modern PC for home or office use has an internal soundcard. In general, the quality of the PC’s sound subsystem...

1-07-2004 | A small webserver with big potential is described elsewhere in this issue. Here we provide a simple example of how to use this new server, s...

1-03-2004 | Despite its surprisingly simple hardware design and construction, the superb frequency meter / event counter described in this article coupl...