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.
Bu hikaye Electronics For You dergisinin December 2023 sayısından alınmıştır.
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Bu hikaye Electronics For You dergisinin December 2023 sayısından alınmıştır.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Giriş Yap
TRULY INNOVATIVE ELECTRONICS -INNOVATION UPDATES
Amongst numerous press releases of new products received by us, these are the ones we found worthy of the title Truly Innovative Electronics
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A high-tech, flexible wearable device made from the innovative elastomer material
Nanotechnology based noninvasive cancer diagnostics
Nanoflake sensors built from indium oxide with platinum and nickel detect changes in isoprene
Space communication with silent amplifiers
In the new communication system from researchers at Chalmers University of Technology, in Sweden, a weak optical signal (red) from the spacecraft's transmitter can be amplified noisefree when it encounters two so-called pump waves (blue and green) of different frequencies in a receiver on Earth.
Advancements in TOPCon solar cells
The structure and performance of tandem devices with highly passivated TOPCon bottom cells
Quantum leap in magnetism refines superconductors
Rice University physicists have uncovered key magnetic and electronic properties in kagome magnets, structures resembling basket-weaving patterns.
Sensor targets food antioxidants
A research team from Hunan City University and Xiangtan University in China has developed a sensor for detecting TBHQ, a food antioxidant used in oils and fats, addressing health concerns at high concentrations.
Data sensing with repurposed RFID tags
UC San Diego researchers have advanced passive data collection with a breakthrough in battery-free sensing.
Seal-inspired sensors to safeguard offshore wind farms
Schematic structure of the seal whisker-inspired flow sensors
Artificial nose identifies scents accurately
Artificial nose identifies scents accurately
