Let Automation Take Control

India is investing hugely in infrastructure, catalysing growth of industries like cement and steel. It is also going to be the biggest drug manufacturer in the next couple of years. These...

LED-BASED MESSAGE DISPLAY

This LED-based message display is built around readily available, low cost components. It is easy to fabricate and makes use of 3mm red LEDs. A total of 172 LEDs have been...

LED-Based Running Display

Here is a circuit that creates an eye-catching running display effect using LEDs. It can be used to light up borders of animations, pictures, etc, and also for short word displays. The...

THE RISING SUN GREEN JOBS ARRIVE

Blessed with one of the best quality and quantity of sun, India offers a huge potential to develop solar photovoltaic (PV) power both for domestic consumption and export. With several new...

LED And Luminaire Testing Can’t Be Taken Lightly

Standards and tests are essential to evaluate the quality and longevity of LEDs and luminaires. So test and measurement solutions have to keep pace with the evolving LED lighting standards SHWETA DHADIWAL...

Looking Into The Brain For Lie Detection

Though the reliability of brain scanning for lie detection is still under question, these tests are fast becoming popular with the crime investigating teams. Here’s how they work DR S.S. VERMAPolice use...

PROGRAMMABLE DOOR- BELL WITH FLASHING LEDS

IC1 (NE555) is used here as a clock generator. It is configured as an astable multivibrator whose frequency can be adjusted with the help of potmeter VR1. The clock pulses obtained...

FRIENDLY CHARGER FOR MOBILE PHONES

Most mobile chargers do not have current/voltage regulation or short-circuit protection. These chargers provide raw 6-12V DC for charging the battery pack. Most of the mobile phone battery packs have a...

FLASHING-CUM-RUNNING LIGHT

This circuit generates flashing lights in running pattern. In conventional running lights, the LEDs glow one by one. In this circuit, the LEDs flash a number of times one by one.The...

ULTRA-BRIGHT LED LAMP

This ultra-bright white LED lamp works on 230V AC with minimal power consumption. It can be used to illuminate VU meters, SWR meters, etc. Ultra-bright LEDs available in the market cost...

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