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Memory termination IC balances charges on series capacitors - 18-Aug-05
Issue of EDN Get the best performance from high-value capacitors with simple IC
circuit....[Design Idea by Clayton B Grantham, National Semiconductor, Tucson, AZ;
Edited by Brad Thompson and Fran Granville]
Message Wand - The message wand is a good PIC introduction as it is a simple
project yet illustrates many aspects of the PIC usage. Used at night, the wand is
swung around above the head, and to onlookers spells out a short message in the air
using flashing LEDs. It could also be used with a handle and spun round like a
traditional soccer rattle (can you still get those?) though great care must be taken
if you do this....(circuit added 04/04/04)
Microchip PIC14 - Engineers of my generation in the UK will
remember the Science of Cambridge Mk14. Intended to be Sir Clive Sinclair’s
first home computer kit for the general public, it served to train a
generation of electronics engineers in how to program microprocessors. The
Mk14 was based on, and virtually identical to, the ‘Introkit’ that was
available in America at around....(added 04/04/04)
Microcontroller becomes multifunctional - 25-Oct-01 Issue of EDN A
microcontroller, by default, can execute only one program at a time. What do you do
if, in a given project, you need to performthan one operation at a time?
Addmicrocontrollers to the design? In certain cases it's unnecessary. Consider a
real-life situation (Figure 1]. The microcontroller constantly generates on its Pulse
output pin a sequence of pulses with 25-msec duration....[Design Idea by Abel Raynus,
Armatron International, Melrose, MA]
Microcontroller controls analog phase shifter - 12-Jun-08 Issue of EDN
By using a digital potentiometer in a phase-shift circuit, a microcontroller can
precisely control phase shift....[Design Idea by Nick Ierfino, IGS Technologies,
Montreal, PQ, Canada]
