Step Up Boost DC-DC Converter 0.9-5V to 5V 600MA USB Output Module

Step Up Boost DC-DC Converter 0.9-5V to 5V 600MA USB Output Module

Marsoni

M251S

$150.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Step Up Boost DC-DC Converter 0.9-5V to 5V 600MA USB Output ModuleModule Properties: non isolated step up module (BOOST) input voltage: 1 5V Output voltage: 5. 1 5 . 2 V Output Current: Rated 1A 1. 5A (single lithium input), the maximum 1. 5A (single lithium input) Efficiency: Up to 96% (the higher the input voltage, the higher the efficiency) Switching frequency: 500KHz Output ripple: 30mV (MAX) 20M bandwidth (input 4V output 5. 1V 1A) Voltage indication: LED lights with load (input voltage less than 2. 7V LED

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Great book for beginner climbers, especially those who want to set up top ropes. Goes over anchor setup, knots, gear placement, belaying, rappelling, etc. Lots of good photos. Very easy to read, don’t be put off by the description as a “manual”, and worth reading to learn how to do things safely. It’s definitely not just for those who want to guide or take AMGA courses. If you are debating getting this book or “Top roping” by the same author, get this one, as it contains 100% of the content in the other book (much of the exact same text and photos) and more, and is just as easy to read. In fact, this has a ton of overlap (and many of the same photos) with “Climbing Anchors” which the author co-authored, but is more accessible and spans a wider range of content. If you are the “leader” of your beginner climbing friends or even if you have some experience but want to take a beginner climbing outside, this is a must read.

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Reviewed in the United States on September 10, 2020

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Annran

Louisville, US

★★★★★ 5

Perfect reference guide

Format: Paperback

I bought this book to supplement my lessons with an AMGA guide to learn how to set up toprope climbs. I used it many times to practice and reinforce everything I learned. It is really well written and my favorite book in terms of the knowledge contained within. As common sense would dictate this is not a book to teach your how to toprope...it is a reference to what you have learned?

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Reviewed in the United States on May 24, 2015

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Joel Schopp

Dallas, US

★★★★★ 4

Essential To Read Before the Class

Format: Paperback

This book provides a good overview of what you'll need to know for your AMGA Single Pitch Instructor (SPI) course and assessment. If you plan to take that course this book is a no-brainer. You just have to buy it and read it. There are a few shortcomings: * The photos of how to tie the knots skip a lot and it is impossible to learn the knots from the book. * The photos of what not to do should be clearly labeled with a red cross bar or WRONG overlay on the photo. If you flip causally through the book and look at the photos some very wrong stuff is there and you have to read the text to know that it is not recommended. * The religious debate on anchor systems rages on. Should you set up a Joshua Tree System with Tether or a Backside System? I realize the AMGA doesn't want to pick sides and will say either is acceptable, but the book doesn't even try to discuss the advantages and disadvantages of various anchor systems.

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Reviewed in the United States on October 30, 2015