Tips From Our Tech Department

Please check back as other hints and tips are added. You can share comments and suggestions for future tips with our technical advisor by emailing him at electron@elexp.com.

We will publish any hints or tips that we feel are of general interest to electronic technicians, teachers and students. If you have a tip you would like to share, please write, FAX or email it to us at electron@elexp.com and we will evaluate it for possible inclusion in this section.

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The 7-Henry Inductor
Answer to a question sent in by one of our readers

Choosing Components: Part 1

Choosing Components: Part 2

Connectors

Contact Bounce and De-Bouncing

Making Electrical Measurements Part 1

Making Electrical Measurements Part 2: Loading

Making Electrical Measurements Part3: Testing Diodes and Transistors

Keypads
How They Are Built; How They Are Read

17KP1604 4x4 Keypad
Interfacing the 17KP1604 4x4 keypad wo a 74C922 decoder chip.

The Oscillating Amplifier

Notes On Gain-Error In Op-Amp Amplifiers

RS-232 Interface

X10 Scope Probe

Shunt Regulator

"Lead Free - What to Do? About the Useful Life of Soldering Tips -- By Volker Munz and Dr. Werner Kruppa
(Used with the permission of Dr. Werner Kruppa)

Article: Weller - Coping with Lead Free

Tip Saving Solution When Using Lead Free Solder

Better Soldering - (A COOPERTools Reprint)

Reading Transistor Markings

Trouble-Shooting

REFERENCE CHARTS

Commonly Used Acronyms

EIA Standard Values Table

Film Resistor Charts

Telephony Dialing and Signaling Tones

General Purpose Transistors

Wire Chart

FREE SOFTWARE

Find_R Utility Program (66kb)
Finding resistor values for any given ratio.

EXPERIMENTS

"Quick and Dirty" Audio Amplifiers
Originally published in the Summer 1997 issue of Potential, a newsletter published by R. S. R. Electronics. Inc.

Simple DC-DC Converter
Originally published in the Fall 1997 issue of Potential, a newsletter published by R. S. R. Electronics. Inc.

Adjustable Duty-Cycle Oscillator
Originally published in the Spring 1998 issue of Potential, a newsletter published by R. S. R. Electronics. Inc.

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Last Modified April 16, 2006