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2021-6-15 16:28| : | 鿴: 17| : 0

ժҪ: ŴҶйľǾԭװ߸ֻ磬ֻҪ1Сʱܴ10%䵽100%ǻһߺֻijٶȱúȫ䲻磬߲ ...
ŴҶйľǾԭװ߸ֻ磬ֻҪ1Сʱܴ10%䵽100%ǻһߺֻijٶȱúȫ䲻磬߲ƥֻijζҪԭװҳ߻һʹáԴ˺ܶûʣߵĽṹͳһ𣿼ȻṹͬΪʲôļأ

ʵⲢߵṹģõIJġҵձʶһĿǰǸ߶˵ֻƷõ߻϶ͨõģϵġߡһֻҪͱԼߣҲڿϣͨʽʹʱijݴ书ҲDzܵӰġ˵㻻õߺ󣬳ٶԱųֿЭʹԭװ߲ġԭʣµȻǴҳ˵ġˡ


ҿɱС⣬ߵĹЧʲؼءйܷIJŴҶ⣬USB 2.0߲USB 3.0/3.1߲ĵIJ죬ͨUSB Type-Cӿ׵3ӿڵIJȵȣdzЧָôأǽҪĹؼ

ΪʲôѹԳЧӰ죿

ڿʼЧ֮ǰһؼʽСѹѹָ߲˵ĵѹ߲ĵ˽һ5VĵԴֻ⵽4.8Vĵѹ߲ĵѹ0.2VôѹôأʵõIJȻõĵ絼壬չ鲻dz壬ڲǴڵģ˵߰ѳֻ󣬾൱һ·дһ裬·γɺоͻеͨе͵Ĵڣ߲Ȼͻѹѹֵѹֵ

֧5A߲ģͨ3AʱѹΪ0.3V൱0.9W

Ϊʲô˵ѹһжϳЧʵĹؼأΪڳУն豸ѹǾߡѹģһ򵥵ӣѹΪ5V·Ϊ2AʱʹѹΪ0.2Vζն豸ѹΪ4.8V빦Ϊ9.6Wʹѹﵽ0.4Vʱζն豸빦ֻ2A*4.6V=9.2Wˣ߲Ĵ˶0.4Wġ빦ԽζųٶԽ߲ĵѹӰųЧʵҪԭ

֧3A߲ģͨ3AʱѹΪ0.6V൱1.8W

ֻһۼ㣬ʵϲն豸ͳѹҪģij豸֧5V5%ijѹҲ4.75V5.25Vʹһ2Aѹﵽ0.4V߲ʱܻܿΪѹֻ4.6VòͳԼѹǻֱֹͣ磬һѹ͵ߺָܻ˵һ2Aѹﵽ0.4VʱҪ併Ϊ0.25Vôͨĵ½1.25Aʱն豸빦ʽ൱4.75V*1.25A5.94Wԭϵ5V*2A=10WԵµ

ѹʲôģѹĴС

ȻѹߵijЧԵӰ죬ôߵһԶԡѹԵӰأʵѹļ㹫ʽѹ=*衱ǾͿԵ֪߲ĵĵѹԵӰ졣߲ĵĵҲdz˵ġ衱ˣݡ=*/ļ㹫ʽԵ֪µIJͬҲǵͬ£߲ĵĵ볤ȳȣɷȣҪµĵ裬̳ȣӴֱӵķ

ֱϿ߲ͨģϣͨС£߲ĸ

ΪʲôֱȽϳҲȽϴֵԭΪҪͨķʽֲ裬߲ĵijɱЩҲҲø󡣲ҲвֲƷӳȵͬʱı߲ĵĽԽѹԽԣȻDz˵߲ʹãֻ߲ijЧȷʵһЩ

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