Back to Back Issues Page |
![]() |
Electronics Project and Design, Issue #002 May 22, 2006 |
Hi Issue #002 21st May 2006
Welcome to the 2nd issue of Electronics Project and Design. I know this 2nd newsletter is slow in coming to you and I would like to thank you for being so patient. I have been busy updating the website with many new projects and relevant information pertaining to electronics project design. If you have not visited the site for quite a while, do pay a visit now and check out the new projects recently uploaded.
In this issue :
For this issue, we will look into a Hold Telephone Circuit that will enable you to hang up one phone without losing the connection and move to another room or hall and pick up a different phone which is connected in parallel and continue your conversation. This feature is useful especially when you are staying in a house with different levels and having 2 telephones connected in parallel. This project uses a silicon controlled recifier or SCR which is connected in series with a light emitting diode (LED) and a potentiometer. It is a simple project that uses only 5 electronic parts.
You can get the detail schematic and parts list of the project from the link below.
In the design of electronics project, it is very common to use a keypad matrix as a means for user to interface to the product. In order to minimize the number of pins used in the microcontroller, the keys should be arranged in as square a matrix as possible.
You can get the detail of the technique from the link below.
Remember to check back often for more updates on
www.electronics-project-design.com
If you find any of the above information useful, please feel free to forward it to your friends.
If a friend forwarded this to you, you may want to subscibe to this newsletter yourself and have future issues sent directly to your mailbox. Please subscribe
HERE.
See you in the next issue. :-)
All the best, |
Back to Back Issues Page |