229-稳压二极管的供电限流电阻怎么算？还有带负载能力
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稳压二极管需要限流电阻供电，电阻取值应该在最小稳压电流和最大稳压电流之间。考虑到二极管的安全工作，可以取它最大工作电流的一半或1/3计算，然后减去最低稳压电流就是带负载能力。
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