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Description
Mean Well - 100W Single Output DC - DC Converter - 24VDCHigh Efficiency 100W DC to DC Power Solution Ensure stable and reliable power for your critical systems with the Mean Well SD 100B 24, a robust 100W enclosed DC DC converter. This high performance unit is engineered to take a wide DC voltage input from 19V to 36V and deliver a clean, regulated 24V DC output, making it a versatile solution for both step down (buck) and step up (boost) applications. It's an ideal choice for industrial automation,
High-Efficiency 100W DC-to-DC Power Solution
Ensure stable and reliable power for your critical systems with the Mean Well SD-100B-24, a robust 100W enclosed DC-DC converter. This high-performance unit is engineered to take a wide DC voltage input from 19V to 36V and deliver a clean, regulated 24V DC output, making it a versatile solution for both step-down (buck) and step-up (boost) applications. It's an ideal choice for industrial automation, telecommunications, and battery backup systems where consistent power is paramount.
Robust Protection and Industrial-Grade Reliability
Built for demanding environments, the SD-100B-24 features a comprehensive suite of protections, including safeguards against short circuits, overload, and over-voltage. The overload protection utilizes a hiccup mode that allows the unit to automatically recover once a fault condition is resolved. With 1500VAC input-output isolation, a built-in EMI filter to minimize noise, and 100% full-load burn-in testing, this converter is designed for long-term, dependable operation. Its durable enclosed design and free air convection cooling ensure optimal performance across a wide operating temperature range.
Key Features
- Wide 2:1 DC input range (19-36VDC).
- Stable, regulated 24VDC output at 4.2A.
- Delivers up to 100.8W of continuous power.
- Comprehensive protections: Short circuit, overload, and over-voltage.
- High-reliability design with 100% full-load burn-in test.
- 1500VAC I/O isolation for enhanced safety.
- Fixed switching frequency at 83kHz for low noise operation.
Technical Specifications
| Model | SD-100B-24 |
|---|---|
| Output | |
| DC Voltage | 24V |
| Rated Current | 4.2A |
| Rated Power | 100.8W |
| Input | |
| Voltage Range | 19 ~ 36VDC |
| Efficiency (Typ.) | 78% |
| Protection | |
| Overload | 105 ~ 135% rated output power. Hiccup mode, recovers automatically after fault condition is removed. |
| Over Voltage | 115 ~ 165% rated output voltage. Shut down o/p voltage, re-power on to recover. |
| Environment | |
| Working Temperature | -10 ~ +60°C |
| Safety & EMC | |
| Withstand Voltage | I/P-O/P: 1.5KVAC, I/P-FG: 2KVAC, O/P-FG: 0.5KVAC |
| Other | |
| Dimensions (L x W x H) | 199 x 98 x 38 mm |
| Weight | 0.65 kg |
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4.3 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 1
small comic book
Format: Paperback
more like a pamphlet than a book... very disappointing
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Reviewed in the United States on November 18, 2020
★★★★★ 3
Booklet.
Format: Paperback
Book was depicted like a comic book. Disappointed in the content and how it was presented.
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Reviewed in the United States on December 5, 2024
★★★★★ 5
Well-told, fascinating history of an important event.
Format: Hardcover
There are many books available about the D-Day Invasion of World War II. But because so many people were involved, there are endless ways for the story to be told. In addition, for the same reason, authors have to pick and choose what information to share, there is simply too much to share in any one book. Plus, no two authors tell the story in the same way. Thus, there is a place for Hopkinson's book on the subject. And she's done a fabulous job in sharing the information in a way that works for adolescent readers.
The book starts with the experience of a young man flying over France as one of the thousands of paratroopers proceeding the sea-based invasion. This makes for a great beginning as it pulls the reader right into the story. Following a brief description of what D-Day was and how the U.S. Army was organized (helpful for those with little military or World War II background), Hopkinson goes back and tells the story of the major events that led up to the invasion itself. The book is divided up into 7 parts as follows: The Plan, The Gods of War, Night Into Day, Utah, Omaha, Aftermath: More than Courage, Quartermaster's Department. Each section includes important information related to the general plans and some of the individuals involved in creating those plans. As this book is written for American youth, it focuses on the two invasion sites that the Americans helped invade, the beaches code named Utah and Omaha. I especially appreciated the widespread use of quotes and experiences from individuals who were there. The story feels more real when one reads the words of an actual person. The inclusion of 'dispatches' and 'Reader's Invasion Briefings' helped create context in relation to specific issues that came up during the invasion.
All in all Hopkinson has created a compelling account of a day that changed the world forever. A day that young history buffs will want to know about. This is a book that would be easy to recommend to young readers who want a glimpse into the experiences of those involved in both the planning and executing of D-Day.
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Reviewed in the United States on October 3, 2018
★★★★★ 5
Read for yourself. Then book talk and get in the hands of students.
Format: Hardcover, Format: Hardcover
The kind of book you don’t want to put down. For sophisticated YA and adult readers. I thought I knew about D-Day, but as I began to read this book, I realized I had no idea what a complex operation this was--the covert planning and the freaking size of this plan. 13,000 U.S. paratroopers jumped out of planes. Some 57,000 stormed the beaches at Normandy. Others were brought in on "horsas" --airplane "gliders" made of balsa wood that were pulled by bigger planes and then let go to glide into enemy territory - with hundreds of men and equipment including jeeps aboard. Even though they'd planned and planned, the implementation was a debacle. Paratroopers and gliders landed off course. Amphibious vehicles, loaded with men, beached in the wrong spot or were hit by German weaponry and sank, leaving soldiers to drown or swim to shore, loaded down with 75 pounds of equipment. The Germans had lined the coast with explosives and were nested in to bunkers, ready to attack. The U.S. attempted to destroy some of this before men landed but were not successful. The men landing did not know this until they came upon well-fortified, heavily armored and waiting Germans (especially at Omaha Beach). It was a mess. And yet, they got a "toehold" onto the German occupied territory. A toehold that allowed the Allied forces to start moving against Hitler's army.
I’m writing all of this to say that Hopkinson expertly conveys the gravity and enormity of the situation. She does not pretend to know the feelings or thoughts of individuals involved in this experience. Instead she uses well-established facts and primary sources including many quotes from oral histories to tell the story of this day. Honestly, I finished this book thinking, “OMG” and feeling incredibly indebted to these soldiers and any other person who has served our country.
IN A CLASSROOM – My first thought is “Why do we still rely on textbooks in any kind of high school history class?” Book talk this. And then recruit a group of students to read, engage in student-led conversations, learn from additional sources, and then share their learning (and even their gratitude). Questions that might serve as a guide:
• “What made this endeavor enormous?” This kind of question includes the literal numbers, but also thinking critically about the emotional and mental weight of this plan on key individuals that Hopkinson alludes to and thinking beyond the text to the planning that Hopkinson does not describe, but that must have had to happen to get the troops ready.
• “How does Hopkinson weave complex details together in a way that makes the enormity of what happened accessible to the reader?” This could include a discussion of how she includes statistics, but also oral histories. What is the role of each of these types of details?
• “What does Hopkinson leave out?” or “What choices did Hopkinson clearly make about what to include and what not to include?” or “How does Hopkinson establish accuracy and authority throughout the text?”
IF YOU BOOK TALK THIS, a couple of tips:
• I would not take for granted the value of students previewing this text before reading, of students thinking through the design of the text (looking carefully at the table of contents) and the PURPOSE of special features (e.g., sidebars like “reader’s invasion briefing” and “dispatch”). This will help them navigate and make sense of the information. Even sophisticated readers could benefit from this.
• Also, for me, the narrative really picked up in Part 2 after Hopkinson develops the context for D-Day and describes initial planning. Keep an eye on (striving) readers during Part 1 or until you feel like they are on a roll. It wouldn't hurt to provide extra scaffolds like a current map of Europe, readers can reference as they move through the book or a chance to explore the topic (with video, etc) before they read.
• The technical language that Hopkinson includes early on related to service members' rank, division, etc. may bog some readers down. Do not let this deter them. You may need to think aloud in front of students about how you make sense of these terms as a reader and continue moving forward. This lightens up and becomes easier to navigate a little bit into the book.
The courage it took to face that day (and many others that we have asked service members to face since then) is stunning. As a reader of this book, YOU FEEL THIS. Towards the end of reading this book, I went to lunch with family and as we entered the restaurant, I saw a group of service members eating at a table nearby. I couldn't help it...I quietly paid for their lunch. I asked to be anonymous, but the wait staff gave me away. When the service members came over to say thank you and shake my hand, I nearly wept. I live in a freaking silo—I know no one serving in the military. This book strengthened by gratitude to anyone who has served our country. Thank you, Deborah Hopkinson.
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Reviewed in the United States on November 11, 2018
★★★★★ 5
Good read for young history lover
Format: Hardcover
My 10 year old WWII buff loved this book.
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Reviewed in the United States on May 25, 2020
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