Digital Analog Power Junction

delabs designed and built many custom "engineered" Test Instruments. They were not prefect, as only one or two were fabricated. That means it will be costly to produce such instruments. It is just like tooling, you have to make some numbers to recover costs, or price it very high to compensate for the wastages and iterations. But things are better off now for building custom instruments. Yet a design firm has to make modules and keep ready, then put together a solution/system, program and ship.

Test & Measurement Instruments

When making custom equipment, you have to have an extended service agreement like 5 years. Also request a minimum order of at least 5. Make your R&D and Inventory Modular. That way it is profitable and some money available for reinvestment on instruments and Equipment for calibration and quality.

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Analog Circuits are the core in any instrument design, Even in a Instrument with Digital or uC control. The Interface to the Real World parameters is Analog. High Speed Analog and High Energy Measurements are the challenging areas.

T&M and Process Control Instrumentation have many things in common; but the conditions in which a Industrial Instrument works, may be very unfriendly.

Instrumentation and Measurement Circuits

Industrial Instruments are used both in Clean-Cool Control Rooms and also in a corrosive, humid, hot and vibrating industrial environment. Even high levels of Static, Magnetic influences in conjunction with spikes and brown outs can be expected.

Basic Measurement

• Auto ranging 4-1/2 Digit Digital Voltmeter
• 3-1/2 Digit ICL7107 Digital Panel Meter
• Current Source mA for calibration

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Interactive Web Widgets that help you learn Basic Digital and analog concepts. You have buttons to press and pots to tweak, LED lights, Digital Displays and Meters indicate output values.

Digital Electronics Tutors

These Digital Tutors are interactive and started with very basic JavaScript and CSS. You can operate the controls and see the Truth Table and Results in LED Displays. Controls include DIP Switches and Push Buttons.

These Gadgets helps beginners learn some digital circuit concepts. The Digital Logic is Studied by operating Switches and observing LEDs on a Virtual Breadboard. Lead Free.

Digital Logic Gates

Gates are what make many of ICs, the two popular families are the 40xx CMOS and the 74xx TTL . Now 40xx come in 74HCT40xx flavors which approach the quality of an ideal gate. Entire circuits with Gates can also be also be burnt into PLDs, FPGAs and CPLDs just like you burn your CDROM. Gates can also be implemented in assembly language which a microcontroller like 8051 will understand and execute.

Digital Interactive Tutorials

• The NOT gate - Digital Logic gates
• The AND gate - Digital Logic gates
• The OR gate - Digital Logic gates
• The XOR gate - Digital Logic gates
• Digital Up Down Preset Counter CD4029
• Astable Mutivibrator with 555 Timer
• Running Lights with 555 and CD4017

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delabs and dapj EE Tech Publications are distributed over many Blogs, Sections, Sites. These are listed in this post and others below.
EE Design - Electronic Product Design Resource.

Sections of delabs specific to certain EE Technology Sectors.

• delabs Technologies - Semiconductors and Chips.
• delabs Schematics - Circuits & Electronic Projects.
• Hobby DIY Electronics - Do-It-Yourself Hobbyist.

This is an entry page for the delabs and dapj websites, blogs and services. The Electronics Engineering Resource and EE Product Design Reference Sections

delabs Circuits - Circuit and product design archive. Most of delabs circuits, projects and docs can be found here delabs Content Map and has the blogs and other services too.

Instrumentation and Industrial Design

• Analog Circuits - OpAmp, Signal Condition, Mixed Signal. 
• Digital Circuits - Logic, CMOS, Counters, Timers, 555. 
• Power Electronics - SMPS, Regulated Supply, SSR. 
• Microcontroller - 8051, 8052, OpCodes, Analog Interface. 
• Test Measurement - Multi-Meters, Small Test Tools. 
• Data Interface - Virtual Instrumentation, Device Networking. 
• Custom Projects - Sequential Process Timers, Chargers. 
• Hobby Projects - Insulation tester, LED Circuits, Meters. 
• Theory Tutorials - Basic Electronics, Instrument Design. 
• Electrical Diagrams - Control Panels, Reference Tables. 
• Resources - Electronic Firms and Electronic Projects.