Timer From Old Quartz Clock
You can build an accurate, low-cost timer from the circuit of an old quartz clock. This timer has a time duration of up to...
IR-Controlled Water Supply
This circuit can be used in homes or small restaurants for any type of water supply unit, such as toilet flush or washbasin tap.
The...
ELECTRIC GUITAR PREAMPLIFIER
Here is the circuit of a guitar preamplifier that would accept any standard guitar pickup. It is also versatile in that it has two...
T&M in Mission-Critical Aerospace and Defence
As public-private partnership in aerospace and defence catalyses indigenous design and manufacturing, test and measurement holds great potential from design to delivery in the...
Simple Key-Hole Lighting Device
When opening the door of your room in the dark, you may have to spend a few minutes searching for the key-hole. Here is...
Halogen lamp Saver For Bikes
Halogen lamps are prone to burn-out owing to their low cold current. The rapid heating inside the lamp melts the thin filament and cuts...
MOBILE ELECTRONIC WORKBENCH
Typically, implementing and testing even a small circuit requires an elaborate setup that includes breadboards, a dual DC power supply, hookup wires, ICs and...
HIPOT Testers For Electrical Safety
Electrical safety is of utmost importance for all the electrical and electronic products. Today’s HIPOT (short for high-potential) testers—key test equipment for electrical safety—have...
Test & Measurement: An Innovation A Day!
The T&M world is innovating at a rapid pace, to keep in step with the developments taking place in its client industries, ranging from...
Sequential Device Control using TV Remote Control
This circuit lets you switch on and switch off up to nine devices sequentially from your TV remote control.
The circuit consists of an IR...