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delabs maintains an Electronics Circuits Archive with some Technical Documents, many of these circuits were designed or developed by me. Hobbyists, Students and Professionals can get more ideas on various aspects of  electronics and circuit design.

Solderman's Basic Electronics practical electronics.

Circuits FAQ has Electronics Design Notes.

Schematics of delabs circuit and product designs.

delabs Design Devices has Design Information Pages, Components Sourcing, Engineering Services and Electronics Manufacturing Firms

The Pages below Lists many designs and projects
Content Map One - o - Content Map Two

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delabs Technologies

Electronic Circuits and Schematic Diagrams contain the designs with some notes.

Hobby DIY Garage covers Amateur Radio to Home Automation.

delabs Updates dapj Updates

delabs blog feeds at and

delabs Engineering
Electronic Components
Mains Power Transformers
Resistors and Types
Coils Transformers SMPS
Relays and Contactors
Types of Switches
Types of Capacitors
Potentiometers Trimpots

Basic Electronics

Digital BCD counter
Astable 555 Timer
LED Running lights
Basic Electronics
555 Timer Circuits

Microcontroller Projects
80C31 SBC
Embedded Controller
ICL7135 and 89C51
MCS-48 and 80C39

Digital and Interface
Digital Timers Counters
Printer Port, 256 Relays.
Control Interface PC
Analog Interface PC

Function Generator
Insulation Tester TeraOhm
DMM digital multi meter
Voltmeter Attenuator
LM3914 analog display
Autoranging 4-1/2 DVM

Industrial Automation
Process Control
Mini RTD Transmitter
4 to 20 mA Transmitter
Sequential Timer
Timer Counter Modules
V/I Converter LM723

Power Supplies
Power Electronic Circuits
Power Supplies Section
Battery Charger L296
Battery Level Indicator

Electronic Product Design

Materials and Equipment

Engineering and Technologies

Electronic Projects PCB and Circuit Diagrams
Important Pages for EE and Electronic Product Development

delabs EE Updates
Disclaimer and Terms of usage
The documents, software, tools and links are provided to enhance the ability of an electronics student, hobbyist or professional by sharing information. The information, links etc. should be used by the website visitor, at his or her own risk and responsibility. There may be concept, design and link errors in the pages. Creative Work, ideas and documents of delabs can be used for Product Design and Development by R&D Engineers, Hobbyists, Students and even firms for creating useful products. These cannot be used for reprint, replication or publishing online or offline.

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