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12vת3.3vоƬ

һBUCK·ǽѹ·ԭģ 6ŲǷֵΪ12VռձȿɵľβL2c15˲γ+3.3vѹr19Ƿ裬c15ϵĵѹǷ3.3v3.3vоƬռձȣʹѹ½ͬ...

ת·ͼ R581裬LTV816SƼΪ10mAͨѹ1.2VR581СֵΪ12-1.2V/10mA=1kѡñȽϳõ4.7kΪ2.3mAR582Ϊ߼IN=12VʱOUT=3.3VIN=0VʱOUT=0V

AIC1596 - 33 .LM317Ҳתõ

װһѹ·12Vѹ3.3V. ȡ裬ֵ=12-3.3)3.3ֵȡ̫С̫ 8.7K3,3K贮8.7Kһͷ12V,һͷ3.3K3.3Kһͷӵأʱ8.7K3....

CD4504 ƽתתñȽLM393LM339Ҳת

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2596Ϳ԰2Aû⡣

112Vת3.3Vѹϴ󣬲ԵԴĴ󣬷ȴ󡣽ÿصԴṩѡУaLM2576-3.3bLM2674-3.3ǿѹԴƼab 2öѹ䣬ֻ䵽ѹϣɢЧһЩֱ...

Ҫled,ledĹѹһ㶼3-3.6v֮,ȴ20mA-1A,Χܴ,ɸŷķԼ,R=U/I=(12-3.3)/I,Iָledĵ. ,12vĵѹϸ,Iȡ20mAĻ,R=4.3-4.5k,õ蹦...

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