Switches are electromechanical devices. The are used to control the  path of current or energy flow. Power switches are used to turn on and off loads. The contacts should be robust and have immunity to  sparking and corrosion. Switches for signals need to be gold plated for low contact resistance and within a sealed enclosure.

Types of Switches in Electronics

Illuminated Rocker and Plain Rocker DPDT switches are popular in Power Boards and Extension Boxes for Mains power switching. Both Phase and Neutral lines are switched ON or OFF. This is not only safe but also reduces sparking.

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An Embedded Microcontroller or DSP system is made of Chips, Circuits and Firmware. The digital voltage levels, speed, bus width, fan out, power consumption are some factors that a designer has to keep in mind. As portable and wireless gadgets are becoming more popular, RF, Ethernet and Energy Efficient Design aspects should be studied. Power electronics and Analog Circuits knowledge is used around the system, all this is integrated to make an instrument, equipment or gadget.

Embedded Systems Design

Microprocessors and Microcontrollers

Analog devices like transistors and diodes lead to opamps and analog computing. This takes more parts but with fast devices can be real time. Then came Logic and Digital Circuits, here also big systems will take too many parts. A very Old hp Logic Analyzer instrument, could be HP1600A, had more than five large PCBs, Toggle Switches and numerous 74Fxx TTL Chips. I tried to revive it, it could not be fully restored.

Microcontroller – 8051, 8052, OpCodes, Analog and PC Interface.
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Near 2001 i started sharing my learning and experience in Electronics Engineering on Blogs and Newsletters. One of the Successful eMag and electronic email magazine ran for five years. I lost interest later in the email mag, and this magazine just morphed into a dozen or more Tech Blogs that run today.

From the feedback i got, it has helped engineers and enthusiasts worldwide in Electronic Product Design.

Amps-n-Volts Notes Corrected Improved

These blogs contain most of the Magazine – Schematics of delabsSoldermans BasicsCircuits Faq

My knowledge is limited to my experience, observation, perception, learning and beliefs, but i have to express my views freely. These posts are mirrored in design devices.

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It is not easy to find complete working embedded projects with designs, code and kit. At Tuxgraphics you will find a way to start your embedded skill development, then expand from hobby to solving some real situations in the nearby small factories or labs. Applied Science is Technology. Hobby is a Door to science that makes Science and Technology Delicious. – delabs Notes

You will find tutorials on how to build your own avr programmer, a digital DC power supply, a tiny web server, an ethernet weather station, usb slide show presenter and lots more.

Tuxgraphics AVR Microcontroller

digital DC power supply unit – A very small an really good DC bench power supply unit for your hobby lab. It has lots of features which you normally find only in very expensive power supplies. This one is affordable, small and easy to build.

Temperature and humidity measurements with the AVR web-server – Just add this one SHT11 sensor. No other components are needed to measure temperature + humitidy + dew point.

Mini 3 digit display, a small and inexpensive voltmeter module – We build a simple and inexpensive three digit display. It’s a voltmeter module but it has also gerneral purpose digital IO pins.

Tuxgraphics AVR Microcontroller

Explore the world of avr microcontrollers and DIY electronics stuff. Microcontrollers and other electronic project kits and  parts.