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.
0-30V Mini Bench Power Supply
30V 10A Variable Bench Power Supply
Laboratory Power Supply 0-30 Volt
Fully Adjustable Power Supply
15V / 28V 4A Transmitter Power Supply
5V Power Supply With Overvoltage Protection.
Split Laboratory Power Supply
LM317 Power Supply Circuit
1.3 - 32 V / 5A Power Supply with Short Circuit Protection
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