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The classic and versatile 555 finds its way into many low to moderate frequency oscillator applications. Some of these require the ability to selectively gate oscillation on and off on demand and the 555’s RESET pin can conveniently be used for this purpose as shown in Figure 1. 

Figure 1 Typical gated (via RESET pin) 555 astable multivibrator.

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When asserted (logic level zero), RESET holds the output low and the frequency-setting RC in a known and accurately repeatable (discharged) state. But there’s a “gotcha” that occurs when RESET is returned to logic 1 and oscillation resumes. The problem is illustrated in Figure 2.

Figure 2 Excessively long first pulse occurs on oscillation restart due to C1 complete discharge.

The first pulse generated on restart is significantly longer than those that occur later. This is because during the oscillation-off interval, timing capacitor C1 is allowed to discharge completely to 0 V. This differs from the 1/3V+ “trigger” level that applies during steady-stage oscillation and results in a much longer ramp interval, which is problematic in some applications.

Happily, there’s a simple fix, illustrated in Figure 3.

Figure 3 Added timing capacitor C2 immediately precharges C1 to V+/3 trigger level when RESET returns high normalizing the duration of the first oscillation cycle.

The original C1 timing capacitance is divided into two series/parallel connected capacitors, so that the new C1 = 2/3 of the original, and C2 = 1/3. The new oscillation start-up sequence is shown in Figure 4, note the slew to 1/3V+ on oscillation startup.

Figure 4 C2 charge injection on oscillation startup equalizes pulse length.

For this scheme to work accurately, the source of RESET must provide a full 0 to V+ step and present a low impedance compatible with generation of the timing ramp when at V+. If such a signal source doesn’t already exist, a buffer such as illustrated in Figure 5 may be necessary. A typical buffer choice would be something comparable to a 74HC04.

Figure 5 A buffer may be necessary to provide a full voltage excursion RESET signal.

Oscillator design equations are unchanged from the usual 555 datasheet math, except that the timing capacitance used should be the sum C1 + C2.

Fosc = 1.44/((2R1 + R2)(C1 + C2))

Also necessary is that RESET be asserted and oscillation paused for a minimum of several R1(C1 + C2) time-constants (e.g., 5 or 6) between gates so that discharge of the timing capacitor will be accurately complete.

Stephen Woodward’s relationship with EDN’s DI column goes back quite a long way. Over 100 submissions have been accepted since his first contribution back in 1974.

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Cadmium telluride (CdTe) thin-film photovoltaic (PV) module maker First Solar Inc of Tempe, AZ, USA has entered into a 15-year, captive power purchase agreement (PPA) with Singapore-headquartered Cleantech Solar, a provider of renewable energy solutions to corporations in India and Southeast Asia. Cleantech Solar will construct 150MW of solar and 16.8MW of wind-generating assets in Tamil Nadu, India, supplying about 7.3 gigawatt-hours (GWh) of electricity to First Solar’s new 3.3GW vertically integrated solar manufacturing facility, also located in Tamil Nadu...

In a recent consumer survey conducted by Counterpoint Research, it was found that a substantial 77% of smart device users in India consider chipset capabilities as a pivotal factor influencing their device experience. The survey aimed to gauge the awareness and importance of chipsets among consumers in India, a market that ranks second globally for smartphones and is witnessing rapid growth in various smart devices.

As the Indian smartphone market matures, consumers are increasingly well-informed about their smart devices, making informed decisions crucial for their daily activities. Chipsets, recognized as key differentiating factors in smart devices, play a crucial role in shaping user experiences.

The survey delved into the significance of chipsets across various smart devices, including smartphones, earphones/TWS, smart TVs, and laptops. Advanced features found in current smart devices owe their capabilities to the evolution of underlying chipsets, influencing user experiences and aiding Original Equipment Manufacturers (OEMs) in setting their offerings apart, especially in the era of transitioning to next-generation 5G networks.
Performance emerged as the most crucial feature, with 76% of respondents highlighting its importance, followed by graphics and gaming capabilities (66%), and 5G connectivity (62%).

Regarding chipset brands, the survey indicated that 61% of respondents were aware of MediaTek’s chipsets across smart devices in India. MediaTek, holding a leadership position in smartphones and extending its reach into categories like smart TVs and smart speakers, claimed the title of the world’s top smartphone chipset brand in Q3 2023 with a 31% market share, as per Counterpoint’s latest Global smartphone AP Shipments.

Tarun Pathak, Research Director at Counterpoint, emphasized the growing role of chipsets in the tech ecosystem. He noted, “For any electronics device, we believe that personalized experiences will be the real differentiator for consumers going forward. This means deeper integration of advanced technologies leveraging artificial intelligence for a seamless, reliable and personalized experience with a relentless focus on ultra-fast connectivity. Therefore, companies like MediaTek are well positioned in this space as the tech industry shifts its focus from smart connected devices to smartly connected devices.”

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In the week before Christmas, k-Space Associates Inc of Dexter, MI, USA — which was founded in 1992 and produces thin-film metrology instrumentation and software for research and manufacturing of microelectronic, optoelectronic and photovoltaic devices — hosted Congresswoman Debbie Dingell, who represents Michigan’s 6th Congressional District in the US House of Representatives (as well as being a member of the Energy and Commerce Committee and the Natural Resources Committee)...

Big Data analytics is an influential player in the quickly changing field of data-driven decision-making since it transforms how businesses get meaningful insights from massive amounts of data. We will examine the foundations of big data analytics in this blog and its several varieties, uses, benefits, drawbacks, and difficulties. We will also take a look ahead at this rapidly evolving topic.

What is Big Data Analytics?

Analyzing vast and varied datasets for hidden patterns, correlations, and other important information is known as big data analytics. By integrating cutting-edge technologies to manage enormous volumes of organized and unstructured data, it goes beyond conventional data analysis techniques.

Big Data Analytics Types:

• Using historical data highlights to comprehend historical trends is the main goal of descriptive analytics.
• Determines the reasons behind historical occurrences or patterns using diagnostic analytics.
• Predictive analytics forecasts future trends by using machine learning and statistical algorithms.
• Prescriptive analytics: Makes suggestions for potential courses of action to maximize results.

How Big Data Analytics Works:

To find valuable insights, the process entails gathering, processing, and analyzing enormous databases. Spark and Apache Hadoop are two examples of technologies that are essential for processing and managing enormous amounts of data.

Big Data Analytics Applications:

• Business intelligence: Improving the ability to make decisions.
• Healthcare: Personalized therapy and disease prevention through predictive analytics.
• Finance: Fraud detection and strategy optimization for investments.
• Marketing: Analysis of consumer behaviour and targeted advertising.
• Production: Process optimization and predictive maintenance.

Big Data Analytics Advantages:

1. Data-driven decision-making is made possible for companies through informed decision-making.
2. Increased Productivity: Finding areas for process simplification and improvement.
3. Competitive Edge: Acquiring knowledge that provides a commercial advantage.
4. Optimized Customer Experience: Customizing offerings according to client habits and inclinations.

Big Data Analytics Benefits:

1. Finding inefficiencies and allocating resources as efficiently as possible reduce costs.
2. Innovation: Identifying fresh possibilities and fashions.
3. Risk management is the early detection and reduction of possible hazards.
4. Real-time insights: Quick access to vital data for prompt decision-making.

Big Data Analytics Disadvantages:

1. Privacy Issues: Managing private information might give rise to privacy concerns.
2. Complexity: Big data solutions can be difficult to manage and implement.
3. Cost: Initial setup and maintenance expenses may be high.
4. Skill Gap: A lack of qualified big data analytics professionals.

Big Data Analytics Challenges:

1. Data Security: Ensuring the confidentiality and integrity of the data.
2. Scalability: Handling the increasing volume of data over time.
3. Integration: Bridging the gap between diverse data sources.
4. Regulatory Compliance: Adhering to data protection laws and regulations.

Future of Big Data Analytics:

With the merging of artificial intelligence (AI) and machine learning (ML), the future holds even more developments in Big Data Analytics. Real-time analytics, automation, and improved data protection will probably characterize this revolutionary technology’s next stage.

In conclusion, big data analytics is becoming an essential tool for businesses in a variety of sectors. While there are many advantages to big data analytics, companies will need to overcome obstacles and keep up with technology developments if they want to fully utilize it in the years to come.

The post Navigating the Data Seas: Unraveling the Potential of Big Data Analytics appeared first on ELE Times.

This decades old hp 6441A Precision power supply at a company I am working for is still alive and within original specification. They use it every day for device calibration purpose. Kind of a first for me to see and use push wheel switch based voltage selector. submitted by /u/mkomkomkomkomkomko [link] [comments]

submitted by /u/37chmbr
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Servokon Systems Limited is a well-renowned name in the field of Power solutions and technology expertise. They are India’s leading manufacturers of transformers and stabilizers, and front runners in providing best-in-class Solar solutions, a fine testament to the strength of indigenous manufacturing and engineering capabilities.

Rashi Bajpai, Sub-Editor at ELE Times had the opportunity to cover an exclusive interaction with Mr. Haji Kamruddin, MD and Founder at Servokon Systems Ltd. The discussion highlights Servokon’s products, its technological capabilities, and its innovation goals.

This is an excerpt from the conversation. 

ELE Times: Brief us on Servokon’s latest Product catalogue, its major areas of application, and the technological brilliance it holds.  

Mr. Kamruddin: Our latest catalogue showcases our unwavering commitment to power solutions technology. The comprehensive and diverse product range showcased in the catalogue encompasses power conditioning and transformer technology specifically tailored to meet the unique requirements of various industries.

Our offerings span a wide spectrum, including Variac Type Servo Stabilizers, Rolling Contact Type Servo Stabilizers, Power Transformers, Distribution Transformers, Hermetically Sealed Transformers, Inverter Duty Transformers, Solar Transformers, Furnace Transformers, Compact Sub Stations (CSS), Dry Type Transformers, Pad Mounted Type Transformers, High Tension Automatic Voltage Regulators (HT AVR), Transformers with Built-in AVR, and Special Transformers such as Neutral Transformers, Step Down Transformers, Isolation Transformers, Variable Auto Transformers, and Constant Voltage Transformers (CVT).

Additionally, we provide Automatic Voltage Stabilizers designed for complete household use and specialized stabilizers for air conditioners, home appliances, and Solar Power Generating Systems (SPGS). Our Online UPS Range includes both Transformer-less and Transformer Based UPS options.

We offer HT & LT Electrical Panels in electrical panels, including Medium Voltage Vacuum Circuit Breaker Panels (VCB), HT Panels, and LT Panels. This extensive catalogue caters to diverse applications across manufacturing, healthcare, IT, and other sectors.

Emphasizing cutting-edge technology and engineering excellence, Servokon ensures reliability and efficiency in every solution presented, reflecting our dedication to meeting our customers’ evolving needs.

ELE Times: How is the Servo Voltage Stabilizer range different from the Automatic Stabilizer range in terms of technology and demand- PAN India? 

Mr. Kamruddin: Automatic or Mainline voltage stabilizers and servo voltage stabilizers differ in technology and demand across India. We are the only Indian company that manufactures the widest range of stabilizers from 0.5 KVA to 5000 KVA.

Automatic stabilizers use electromagnetic relays or contactors with tap changers to regulate voltage, while servo stabilizers employ servo motors for real-time adjustments, ensuring precise voltage control. The Servo Voltage Stabilizer usually works on Low Voltage Lines (LT). We are proud to say that Servokon is the number one manufacturer of servo stabilizers in India. Servo stabilizers offer better accuracy (±1%), faster response times, and higher load-handling capacities, making them suitable for critical applications like data centres and industries.

Automatic stabilizers are cost-effective and ideal for residential use, providing reliable voltage regulation with high efficiency (up to 98%). Consider factors such as voltage fluctuation levels, power load requirements, budget, and space availability when choosing between mainline and servo stabilizers.

When deciding whether to opt for an automatic or servo voltage stabiliser, it’s important to consider factors such as the levels of voltage fluctuations, power load requirements, budget, space availability, and desired level of stability. Servokon, a leading and trusted brand in the industry, provides a range of dependable stabilizers designed to cater to various needs. We also craft custom-made designs as per specific customer requirements.

ELE Times: Give us an insight into your Renewable Energy Solutions and the cutting-edge technologies Servokon works within this domain.

Mr. Kamruddin: The company is dedicated to achieving its renewable energy goals through economically efficient and research-based solar power solutions. Servokon leads the way in advancing solar panels, solar batteries and solar inverters in the renewable energy sector. We focus on creating smart grid solutions that seamlessly integrate solar and wind power into grid systems while pioneering energy storage solutions. These innovative initiatives aim to enhance energy efficiency, promote sustainability and ensure grid stability, which are critical in transitioning to cleaner energy sources. Our products are designed to operate continuously, reliably, and with robustness. We utilize intelligent overload sensing circuitry with an auto-retries feature, programmable thermal protection, high efficiency at a lower cost, and a pure Sine Wave output with low Total Harmonic Distortion (THD).

Our solar panels are designed to enhance reliability by minimizing exposure to corrosion caused by sand and salt mist, thus reducing the risk of module warping and micro-cracking. With two peak performance times during sunrise and sunset, our panels optimize dual facial generation for increased efficiency. The lower internal resistance of our panels boosts module power, contributing to minimal power loss. Additionally, our solar panels ensure hassle-free installation, providing the flexibility to install vertically in the east-west direction. Their improved soiling resistance further ensures sustained performance over time.

Our solar batteries utilize slurry-filled tubular technology, featuring extended life cycles and prolonged backup through specially designed tubular plates. With excellent charge acceptance, these batteries incur low maintenance costs and are easy to manage, making them particularly suitable for areas experiencing frequent power cuts.

Our solar inverters incorporate multi-channel integrated MPPT Technology, boasting an impressive tracking efficiency of 99.5%. This advanced technology ensures increased efficiency and high reliability, enabling smart solar selection for maximum utilization of solar power. Additionally, our solar inverters offer the convenience of remote monitoring and control of the Solar PCU through optional WIFI/LAN/GPRS connectivity.

ELE Times: What in your opinion are the emerging innovations in the Power sector and tell us about the ones Servokon is working on?

Mr. Kamruddin: The advent of new-age technologies presents opportunities for revolutionizing the power sector. Energy storage systems can enhance reliability during power outages, necessitating investment in research and development. Recently published IEA’s new World Energy Outlook 2023 indicated that renewables would provide half of the world’s electricity by 2030 due to the phenomenal rise of clean energy technologies such as solar, wind, electric cars and heat pumps.

ELE Times: What is the next big technological breakthrough Servokon is developing?

Mr. Kamruddin: Servokon’s Research and Development division is dedicated to ongoing innovations in power solutions. Our R&D efforts concentrate on developing next-generation power solutions. These solutions prioritize energy efficiency, environmental sustainability, and uninterrupted power supply, aligning with our commitment to delivering reliable and sustainable power solutions.

ELE Times: Tell us about Servokon’s latest manufacturing goals in India.

Mr. Kamruddin: Servokon’s manufacturing goals in India are centred on expansion, modernization, and efficiency enhancement. We aim to bolster our manufacturing capabilities, integrating state-of-the-art technologies into production processes. This includes streamlining operations to meet the escalating demand for our solutions while maintaining stringent quality standards. We aim to provide cutting-edge power solutions that drive progress and sustainability across various industries.

The post Servokon Systems Cementing its Dominance in the Power Solutions Technology appeared first on ELE Times.