![Multi-Purpose Wire-Loop SECURITY SYSTEM](https://cdn.magzter.com/Electronics For You/1712299387/articles/MzjJfpENq1712323784200/MULTIPURPOSE-WIRELOOP-SECURITY-SYSTEM.jpg)
A wire loop, when attached to security items and alarm mechanisms, detects and alerts in case of unauthorised attempts to tamper with the wire loop.
Use a thin, flexible, and durable conductive wire to create a loop around the area you want to secure. Install the wire loop around the desired perimeter, whether it be a doorway, window, or any other access point. When a breach is detected (e.g., someone cuts or breaks the wire loop), the alarm system activates.
Circuit and working
The circuit diagram of the multipurpose security system is shown in Fig. 2. It is built around transistor BC327 (T1), melody generator UM66 (IC1), low-power audio amplifier LM386 (IC2), 8-ohm half-watt loudspeaker (LS1), 9V battery or 9V adaptor, and a few other components. Around one metre of flexible wire is used as a sensor, forming a loop to connect the article (such as luggage) to CON1 in the circuit.
The melody signal produced by the UM66 melody generator is weak. To amplify the sound signals, the widely-used audio amplifier LM386 is employed.
Denne historien er fra April 2024-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.
Allerede abonnent ? Logg på
Denne historien er fra April 2024-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.
Allerede abonnent? Logg på
![HIGH/LOW-VOLTAGE CUT OUT With Built-in Delay](https://reseuro.magzter.com/100x125/articles/146/1748237/Xs1LhpyI51721212463763/HIGHLOWVOLTAGE-CUT-OUT-WITH-BUILTIN-DELAY.jpg)
HIGH/LOW-VOLTAGE CUT OUT With Built-in Delay
Most electronic and electric devices require a voltage within certain limits. If the voltage applied is higher than normal, the current drawn by the circuit may exceed the rated value and damage the circuit.
![AUTOMATIC WASH BASIN TAP With LED Light](https://reseuro.magzter.com/100x125/articles/146/1748237/pCspwMWOH1721212303742/AUTOMATIC-WASH-BASIN-TAP-WITH-LED-LIGHT.jpg)
AUTOMATIC WASH BASIN TAP With LED Light
When waking up at night to use the wash basin, you may struggle to find the switchboard to turn on the light before opening the wash basin tap to wash your hands.
![“Unfortunately, MANY STARTUPS Are Not Aware OF THE POLICIES"](https://reseuro.magzter.com/100x125/articles/146/1748237/mSDt_H6Uf1721211923208/UNFORTUNATELY-MANY-STARTUPS-ARE-NOT-AWARE-OF-THE-POLICIES.jpg)
“Unfortunately, MANY STARTUPS Are Not Aware OF THE POLICIES"
Should startups funnel their funding and investments into their existing bank accounts, or is it wiser to open a separate one? What are the other mistakes that startups make in India? Sharath Shyamasunder, Founder and CEO of The Startup Zone, with extensive experience working with over 5000 startups, discusses these issues with EFY's Mukul Yudhveer Singh.
![Why Industries Are Shifting FROM SILICON TO SILICON CARBIDE For Power Electronics](https://reseuro.magzter.com/100x125/articles/146/1748237/J6u5Pu7Ox1721211732388/WHY-INDUSTRIES-ARE-SHIFTING-FROM-SILICON-TO-SILICON-CARBIDE-FOR-POWER-ELECTRONICS.jpg)
Why Industries Are Shifting FROM SILICON TO SILICON CARBIDE For Power Electronics
Silicon carbide (SiC) revolutionises power semiconductors, cutting switching losses by up to 90% and enhancing efficiency and compactness. As demand for electric mobility and sustainable energy grows, SiC drives a greener, more efficient future.
!["The Biggest Benefit For Fleet Owners Is The Saved Cost Per Month"](https://reseuro.magzter.com/100x125/articles/146/1748237/nHrkAnraH1721211588098/THE-BIGGEST-BENEFIT-FOR-FLEET-OWNERS-IS-THE-SAVED-COST-PER-MONTH.jpg)
"The Biggest Benefit For Fleet Owners Is The Saved Cost Per Month"
As the commercial electric vehicle (CEV) space heats up in India, doors for new business opportunities are also opening up. Log9's CEO Dr Akshay Singhal had a chat with EFY's Mukul Yudhveer Singh on why they launched 'Amphion' to tap on such a major opportunity
!["All Our DELIVERY PARTNERS Are Independent Micro-Entrepreneurs, Constituting A Workforce Of 20,000 GIG WORKERS"](https://reseuro.magzter.com/100x125/articles/146/1748237/ka_W-TQac1721211454842/ALL-OUR-DELIVERY-PARTNERS-ARE-INDEPENDENT-MICROENTREPRENEURS-CONSTITUTING-A-WORKFORCE-OF-20000-GIG-WORKERS.jpg)
"All Our DELIVERY PARTNERS Are Independent Micro-Entrepreneurs, Constituting A Workforce Of 20,000 GIG WORKERS"
Zypp Electric handles 5 million monthly deliveries with its fleet of 20,000 electric vehicles, supporting the livelihoods of 20,000 driver partners. The company collaborates with NGOS and CSR organisations to recruit more women as delivery partners. In a conversation with Nitisha from EFY, Co-Founder & CEO Akash Gupta emphasised Zypp's commitment to social change by empowering driver partners, particularly women and individuals with disabilities. Here are key excerpts from the conversation
![HYBRID SUPERCAPACITORS: Emerging As A Better Choice For Residential And Commercial Use](https://reseuro.magzter.com/100x125/articles/146/1748237/XWMDE81oc1721211205397/HYBRID-SUPERCAPACITORS-EMERGING-AS-A-BETTER-CHOICE-FOR-RESIDENTIAL-AND-COMMERCIAL-USE.jpg)
HYBRID SUPERCAPACITORS: Emerging As A Better Choice For Residential And Commercial Use
Hybrid supercapacitors and solar energy are reshaping energy storage, from India's solar boom to maintenance-free solutions.
![The 'Big Little' Problem In HARNESSING AI To Revolutionise Workplaces](https://reseuro.magzter.com/100x125/articles/146/1748237/u7tct1brZ1721210158176/THE-BIG-LITTLE-PROBLEM-IN-HARNESSING-AI-TO-REVOLUTIONISE-WORKPLACES.jpg)
The 'Big Little' Problem In HARNESSING AI To Revolutionise Workplaces
As AI advances, exemplified by ChatGPT-4, job roles are evolving. Yet, there is significant potential to enhance productivity by synergising human intelligence with Al. Concurrently, efforts to resolve chiprelated challenges persist, driving the continuous improvement of electronics for a promising future.
![What To Look For In ENERGY STORAGE SYSTEMS](https://reseuro.magzter.com/100x125/articles/146/1748237/n8H8gkAvD1721209814747/WHAT-TO-LOOK-FOR-IN-ENERGY-STORAGE-SYSTEMS.jpg)
What To Look For In ENERGY STORAGE SYSTEMS
When selecting a technology for an energy storage project, it's essential to consider several key factors
![GREEN HYDROGEN: Sustainable Fuel For A Carbon-Free Future](https://reseuro.magzter.com/100x125/articles/146/1748237/BmamQKjRV1721209014350/GREEN-HYDROGEN-SUSTAINABLE-FUEL-FOR-A-CARBONFREE-FUTURE.jpg)
GREEN HYDROGEN: Sustainable Fuel For A Carbon-Free Future
Green hydrogen is key to the energy transition. While currently expensive, it could become cost-competitive within a decade with economies of scale, technological advancements, and policy support. India's abundant renewable energy offers a significant advantage.