|
Welcome to
DiscoverCircuits.com
See our Media Kit for advertising
opportunities
Last Updated:
Saturday, August 23, 2008 04:27 PM |
|
|
|
Featured Circuit of the Week |
|
Poor Man's Timer
Often during testing of certain equipment and components, you would
like to keep track of the elapsed time in hours, minutes and seconds.
There are some nice commercial digital timers and counters available
for just this sort of application. However, although it may not be as
accurate, there is a cheaper way to go. I’m sure many of you have
some old wrist watches or battery powered dial faced alarm clocks
collecting dust in some drawer. |
|
|
All Circuits of the
Week |
|
|
|
|
Featured Circuit Last Week |
Poor Man’s Digital Counter Using
Commercial Pedometer
NEW
There
are many occasions when you may want to count something electronically.
Perhaps it is car traffic on a street or items moving down an assembly
line. It might be the number of times a machine is activated or maybe
you want to count the number of people entering doorway. Commercial
counting modules do exist but if you want to use something cheaper, you
can modify a pedometer to do much the same thing.... |
|
|
All Circuits of the
Week |
|
|
|
|
|
|
Dave's other websites to visit: |
 |
 |
 |
collection of resources for inventors,
hobbyists,
scientists & engineers |
resource portal for information
regarding renewable, alternative
or
sustainable energy |
Dave Johnson & Associates -
consulting services
for new products from conception to production
or improving the
cost & performance
of existing products |
|
|
David A. Johnson, P.E. is an electronics engineer with over
30 years practical experience in the areas of analog & digital
design, fiber optics and RFID. Electronics is his vocation,
hobby and passion. He is a published author with articles and
designs in EDN, Electric Design, Midnight Engineering and Popular
Electronics. Throughout his career, Dave's imaginative
approach to design has resulted in applying new technologies in
creative and cost saving ways. |
|
|
|
|
