Posted on Friday, November 12, 2010 • Category: Power Supplies
Amateur radio has been somewhat slow to accept switching power supplies for powering communication equipment. This is a pity, because "switchers", as they are often called, offer very attractive features, like small size, low weight, high efficiency, and low heating. True, they are generally more complicated than linear power supplies, but this is easily compensated by the fact that they can be built for a lower cost.
Some early switchers produced an objectionable amount of RF noise, bringing the whole switching technology into bad reputation. But by proper design techniques and careful EMI filtering it is possible to build very quiet switchers. 12V 2A Linear Power Supply DIY USB Power Supply DIY USB 5V Solar Power Pack 30V/4A Adjustable Bench Power Supply DIY Power Supply for Home Server Adjustable Lab Power Supply 0-30V 0-3A Adjustable Bench Power Supply Dual Adjustable Power Supply 10A 1-30V Variable Power Supply with LM317 LM317 Constant Current Source Circuit Design
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