Fig. 1 displays the author's fully assembled prototype of the emergency light cum advertising display board featuring the alphabets 'V' and 'J'
Circuit and its working
The circuit diagram of the emergency light cum advertising display board is shown in Fig. 2. It comprises transformer X1, 12V voltage regulator LM7812 (IC1), timer NE555 (IC2), NPN transistor SL100 (T1), a 12V SPDT relay, and some other components. The transformer and bridge rectifier recharge the battery directly when mains 230V AC is connected across CON1.
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Denne historien er fra December 2023-utgaven av Electronics For You.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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Automatic WATER LEVEL INDICATOR Cum CONTROLLER
Water storage often presents challenges such as monitoring tank levels, preventing overflow, and reducing manual intervention to operate the pump.
Light-Operated APPLIANCE SWITCH
Automation is now integral to daily life, with mobile phones serving as essential tools.
"To Compensate For TELANGANA'S LACK OF A WET PORT, Our Incentives Help ESDM And Semiconductor Companies OFFSET LOGISTICS EXPENSES..."
Despite logistics challenges, how is Telangana securing billion-dollar investments in electronics? Will the state unveil a new semiconductor policy soon? Jayesh Ranjan, IAS, from Telangana's IT and Commerce Department and ITE&C, shares his insights with EFY's Nijhum Rudra.
FUNCTION GENERATOR Using ICL8038
A function generator produces square, sine, and triangular waveforms across frequencies up to 100kHz. It plays a vital role in testing, repairing, and developing electronic equipment, serving as a signal source for amplifier testing and frequency response analysis.
MARUT DRONE-POWERED SOLUTIONS FOR AGRICULTURAL INTELLIGENCE AND AUTOMATION
Founded in Telangana in 2019 by CEO Prem Kumar Vislawath with co-founders Sai Kumar and Suraj Peddi, Marut Drones leverages drone technology to tackle agricultural challenges and promote sustainable farming across India.
EDGE GESTURE PREDICTION Using Artificial Intelligence
Artificial intelligence for gesture detection and classification has transformative potential across industries, from healthcare to manufacturing and consumer devices.
Do Not Be Fooled BY AI HALLUCINATIONS
All AI models, especially large language models (LLMs), are prone to hallucinating—that is, they sometimes give wrong or fictitious responses that appear correct. Experts recommend providing unambiguous prompts and cross-checking responses before making decisions based on them.
Harnessing AUTOMATED OPTICAL INSPECTION (AOI) TECHNOLOGIES For PCBA Manufacturing
Your smartphone detects defects smaller than a virus using AOI, laser, and X-ray systems. These machines don’t just see—they think. These innovations, from AI-driven defect detection to Nano-CT systems revealing hidden flaws, reshape quality control in electronics manufacturing.
How Graphene Is CHANGING INDUSTRIES
Graphene is reshaping industries—extending the electric vehicle range, cutting data centre energy costs, and sparking quantum tech innovations. This article is based on EFY’s Ashwini Kumar Sinha and Nidhi Agarwal’s conversation with John Tingay of Paragraf to discuss the science driving this shift.
HUMAN SAFETY DEVICE To Monitor Kids, Elderly, And Sick
This human safety device offers a compact, reliable solution for detecting, monitoring, and responding to emergencies involving vulnerable individuals.
