Saturday, May 7, 2016

Digital Electronics and Logic Circuits

The digital circuits section has been updated, most are in the pdf format. Broken links removed or changed.

Digital Circuits - These circuits are based on CD40xx Chips and other. You can use 74HCT or any other series that is available. use one family for a particular project. These were used nearly two decades ago. Use it for learning, glue logic or to interface your uC designs to external devices.

Digital Electronics and Logic Circuits

Do not make only Logic based designs like some below. It would be better to use a uC, CPLD or FPGA if you are building a complex gadget Basic Digital Circuits
  1. Basic Digital Circuits
  2. Digital Timers, Counters and Clocks
  3. Mixed and Interface Circuits
  4. 555 Timer based Circuits

More such designs as entire products

Sunday, April 17, 2016

EE Resource Sites

The EE Resource Sites has been updated. These lists are now over a decade old. Many Broken Links have been removed. Some Resources that were listed have moved to the blogs.

EE Resource Sites

Electronics Engineering Reference Resources

Electronics 1 - Hobby or DIY Electronics and Electronic Engineering Design.

Electronics Hobby or DIY Electronics and Electronic Engineering Design go hand in hand. Many inventions, discoveries and improvements in this technology has been done by Non-Engineers who acquired skills and built firms that created many positions for engineers to work in....

Electronics 2 - Embedded Systems, Microcontrollers, Electronic Projects. 

Ham Radio Enthusiasts improved the Communication Awareness and Science of RF Circuits. Now Communication Systems are built on Embedded Systems. In every niche of electronics, Microcontrollers, SoC and DSPs have become indispensable.

Electronics 3 - Industry, Magazines, Electronic Parts and Kits. Companies. 

Understanding the behavior of Electronic Components. Learning the usage of Mechanical Tools and Equipment to build or manufacture Electronic Products or Prototypes. Mastering the use of the Test Bench and Test Instruments like the Scope and DMM. All these constitute the total skill set in electronics. 

Friday, February 12, 2016

Power Supplies and SMPS

Here are power supply, inverter, drives, chargers and high current equipment diagrams and links. There are Mosfet and Thyristor circuits too.

Power Electronics Section

Power Supplies, Inverters, UPS, Chargers, Electro Plating, Precision Welding-erosion, Coating Metals and many other Processes are made of high current circuits.

In any power equipment, efficiency and reduction of bulk is crucial so SMPS and high frequency control is an important part of this domain. These products also generate EMI-RFI. Product Safety Study is also vital.

Power Electronic Circuits.

Basic Power Supply Designs - AC and DC voltage Regulators, Battery Backup Power Supplies. Battery Chargers, UPS and Inverters. Dual regulated Power Supplies. 5V and 12V Regulators. Benchtop Power Supplies.

 Power Electronic Circuits.

Power Supplies Section.

Switching Supplies and SMPS - Circuits of SMPS, Power Supply, Switch Mode Power Supply are here. High Voltage Power Supply concept. DC Regulated 3 Pin Power Supplies like 7812 and 7805. Workbench Supplies.
Solid State Relays - SSR.

Here are many Types of SSR or Solid State Relays. In this section you will find SSR designs and PCB layouts which you can study. These were made and sold by me years ago. So the PCB layouts have gone thru some revisions and they worked quite well.

High Energy Circuits

High Energy Power Circuits, Thyristor controls like AC and DC Drives, HV power Design, UPS and Mains Power Inverter. SCR control and Battery Chargers.

Friday, January 1, 2016

Happy New Year - 2016 year of IoT

Happy New Year - 2016 - "Things to Make and Do" - IoT - Internet of Things; WSN - Wireless Sensor Networks; M2M - Machine to Machine Data Communication; COR - Collaborative Online Robotics. 

DACT Elektrotech Laboratories - delabs.co

Happy New Year - 2016 year of IoT

All these only mean Wireless Networked Intelligent Embedded Systems. They could be machines, appliance, robot or gadget. The brain is both on the device and in the Clouds.

Internet and Intranet of Things - IoT

When Intelligent Devices (embedded systems) are privately and securely networked, it is called the Intranet of Things. This is like a Home-Office-Business private closed Cloud. This is ideal for Home and Infrastructure Automation and even Big Business or SMB Automation........

Wednesday, October 14, 2015

delabs PDF Circuits

I am now Organizing and Updating my main product design sections. Many Useful Websites and Nice Firms have gone over the last few years. I had to update to remove many broken links and improve navigation. These parts of my websites partially represents my Test-Measurement and Instrumentation firm i ran for some years. It also contains many of my designs and circuit innovations from my early days.

delabs PDF Circuits

In 1999 most of my circuits in the OrCad and PDF Formats were uploaded as zip files in free websites of Netscape and Tripod. Then i got suggestions, Feedback and Thank you letters from all round the world. Later some support, encouragement from enthusiasts and engineers in the US and Europe made me improve the Websites "CMS" and content organization. I am now updating my Plain old HTML Pages for the 4th time in 15 Years.

delabs PDF Circuits

Some parts of delabs/dapj use the CMS Technologies of The LAMP Stack and Google that arrived later. The New Tech Blog areas link Thousands of EE firms and Resources all over the world. The tech cladistics i developed and used to organize; has been adopted (sometimes misused) by publishers and webmasters.

Please note these technical pages are for Electronic Enthusiasts and Engineers around the globe for Reference and to improve basic Design capabilities.

These pages or ideas of delabs technologies and dapj tech cannot be copied, replicated or used for content development online or offline print materials.

Instrumentation and Industrial Design

Wednesday, August 5, 2015

EE Design Library

This is the first production grade joomla section in delabs/dapj. I have been testing and using joomla earlier, even the mambo ancestor since 2000. My first set of php apps in 2000 was like phpbb, 4images, pMachine, b2 and others. Now the upgrades are in the admin panel, that is less stressful.

EE Design Library

EE Design Library - Electronic Product Design Resource.


Measurement is everything, and an Oscilloscope is a EE Stethoscope.

Friday, May 1, 2015

Electronic Engineering Resources

These pages of mine and other sections of delabs, follow that old tradition and lists thousands of firms and EE design resources around the globe, related to Professional and Hobby Electronics. This work of mine started in 1999 on netscape, geocities and tripod homepages. Now it is distributed over few domains and tech blogs that i own and manage.

Electronics Engineering and Technologies

Electronics Engineering and Technologies

Some Electrical and Mechanical pages closely related to Electronic Manufacturing and Industrial Engineering are also listed here. delabs lists more than 10K EE Companies & Resources in the Web.

Categories of EE Websites of Firms and Resources