February 9, 1998 Magazine Archive

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ISSUE DATE: FEBRUARY 9, 1998

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400-MIPS, ISSCC, Aircraft in-seat power, Self-programming microcontroller, Dolby encoding, Fiber-optic components

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Browse Archived Articles By: Issue | Author | Department | Topic

February 9, 1998 - In This Issue

[Design Application]
Standards And Specs For In-Seat Power On Aircraft Still In The Clouds
— Contributing Author

[Ideas For Design]
Window Comparator Features Independent Adjustments
Window comparators, sometimes called limit comparators, determine when the input voltage is within a preselected range. The output voltage usually goes to a TTL high when the input voltage is within this preselected range. A typical windowcomparator... — Contributing Author

[Ideas For Design]
Single-Chip Quadrature Generator
A quadrature generator can be useful in a number of applications, such as motion control and signal processing. The idea presented here describes a very simple and inexpensive implementation of a quadrature generator using a single 8-pin IC, the... — Contributing Author

[Ideas For Design]
Pulse-Width Measurement Made By Microcontroller With MFT
The Multifunction Timer (MFT) used in low-end Motorola microcontrollers (68HC7O5J1A, 68HC705K1, etc.) is much more simplified when compared to its predecessors. It doesn’t perform the three traditional main timer functions: Timer Overflow (TOF), Input... — Contributing Author

[Ideas For Design]
RS-232 Port Powers Frequency Counter
As a source of power, the EIA-232 port has found its way into many applications unrelated to data communications—most notable being the serial mouse. An unusual innovation among RS-232-powered systems is the frequency counter, as seen in ... — Contributing Author

[Ideas For Design]
Battery-Charger IC Doubles As Current Sensor
It’s always fun to try and find applications for an IC which its designer never intended. The circuit shown here is one such design. Many applications require a circuit that provides a ground-referenced output voltage that’s proportional to a measured... — Contributing Author

[Ideas For Design]
Self-Heated Transistor Thermo-stats Individual Components
An unavoidable fact of life is that all parameters of all electronic components drift with temperature. Even the best voltage references, op amps, crystal oscillators, etc., have non-zero temperature coefficients. These effects can be handled by... — W. Stephen Woodward

[Pease Porridge]
What's All This Motorcycling Stuff, Anyhow?
Once upon a time, in the era 1950 to 1960, I rode my bicycles a lot. I probably rode 20,000 miles or more. Heavy old bicycles, light touring bikes, racing bikes. Track machines with a single fixed... — Bob Pease

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