I have corrected, enhanced. moderated my design notes from my earlier Amps-n-Volts News Letter. This was sent thru Your Mailing List Provider for a few years. Even now some errors and misconceptions of mine, might still exist in these posts. Any feedback or correction is welcome. 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 delabs News and Soldermans Basics. Before you open a PC remove power, telephone modem and LAN cables else finger and screwdriver in wrong place can zap chips. The products [Read More ....]
Basic Electronics
basic electronics, tutorials.
Amps-n-Volts Notes Corrected Improved
Basic Electronics
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Jan 212009
Learning Electronics – 01
Basic Electronics
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Jan 162009
How To Learn Electronics Theory must be studied once and referred again and again as you do practicals. One is by building DIY projects and then modifying them. Also Repair of equipment, troubleshooting, testing and calibrating. Then you know how components behave and real life limitations. Now design and engineer a product and test it at customer site. do a pilot production and test with more clients. Now you will learn to think based on practical application. This invention lead to modern electronics, computers and internet look at this page, Transistor Photo. From Soldermans Basic Electronics History of The Transistor [Read More ....]
Jan 152009
Selecting the parts for your product design, choosing the components intelligently is a part of Product Design Engineering. Budget, Availability, Size, Alternate Vendors, Product Life and Quantity to be manufactured are some factors that determine the selection of a prudent and experienced design professional. To choose the right type of part, an exhuastive knowledge of the behaviour of passives and discretes is essential. Some points i remember among the things that i learnt the hard way are listed below. Over rate components at least double, if you need a 1A-100V-100uS diode, use a 2A-200V-50uS diode. Electrolytic capacitors have a shelf [Read More ....]
Jan 152009
Prototype Fabrication Sometimes a component can be defective, may not be what it is labeled or may be of a wrong value. In manufacturing 100% incoming inspection of components can catch these errors, Before Assembly of prototypes just test all passive and active components with a DMM and put all ICs in bases, then troubleshooting is easy. When you make your prototype check diode and el-cap polarity, check pin 1 of chips and connectors, resistor values, dry solder and loose contacts, hairline cuts or shorts, e-b-c etc. of Transistors, FETs and thyristors. Observe color code in wires. positive is red [Read More ....]
Design Notes – Schematic and PCB – 04
Basic Electronics, Design
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Jan 152009
PCB Thermal Design Care for Analog Circuit Stability If you have a hot power chip near a DC analog circuit, the values will drift, take time to stabilize, this happens even if you use 1% MFR 100ppm. The impact is more if the heatsink is not used and vents and coolers are absent, So in a PCB keep distance between heating power circuits and sensitive analog circuits, some times PCB tracks will carry heat to the Analog area, Hence keep sensitive analog circuits as plugin modules. When you make a PCB try to orient all ICs in one direction, so [Read More ....]
Jan 132009
Production, especially prototype testing and Pilot Production exposes lot of engineering and serviceability issues. When you mass produce, it is more streamlined, yet the scope for improvement never ends. The process should always be open to feedback and improvements. The tracks or components on a PCB should not be near the mounting holes, the tracks may form electrical connections with the cabinet earth if they touch the pillar, washer or nut-bolt. When you tighten the screws-nuts-bolt, limit torque by feeling or with torque limit screwdrivers, or thread will slip or PCB-Cabinet break, or CRT-Glass-Plastic will crack-shatter. After assembly and testing [Read More ....]
Jan 062009
Here are two pages from an old OK Industries catalog, now part of Jonard Industries. They have wire wrapping systems, which help build test systems, custom solutions easily. They have many Tools which improve productivity for the Electronics Manufacturing Industries. “Jonard Industries Corp is a World Class Manufacturer of Precision Hand Tools for the Telecom, Computer, Military and Electronic Industries.” Test Instruments bench rack from OK Industries From Electronic Catalogs This is a Mini Electric Drill of OK Industries From Electronic Catalogs
Basics and Instrumentation Electronics
Basic Electronics
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Dec 152008
The Basic Tutorials Section has been updated, “Basics” in an Instrumentation Viewpoint. Some Learning i had written down, Later made a Newsletter Amps-n-Volts. Now i am organizing everything into one area. More like Content Management by chewing the cud. Basics of Electronics Design of a Constant Current Source Electronics Product Design Development Electronic Product Production Manufacturing Precision Amplifier with Digital Control Precision Attenuator with Digital Control Infrared Optical Proximity Switch Digital Multi Meter – New Year Resolutions I will not drop the DMM from a height of 4 feet. I will not Test Live Powered equipment in the Ohms Mode. [Read More ....]
Digital Electronics Interactive Tutors
Basic Electronics
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Nov 252008
Tutorials on Digital Electronics These were tutors which i first made at around 1999, improved them many times, it must be bug free by now. Now i ported them to google gadgets too. If you like JavaScript and CSS or want to look at some work i did, study delabs code and dapj code. Some things i know about Software and Web-apps can be learnt at SAN Gear. Both my Electronics Learning and Javascript Learning Have one thing in common, it started by building a Audio Music Player. The NOT gate – Digital Logic gates The AND gate – Digital [Read More ....]
