WebMar 18, 2024 · 例如便携式电子产品,一般都内置电池,如果是单节锂电3.7v供电,通过dc-dc升压电路,从3.7v升压到5v、8v、9v、12v等再给其他电路供电。 升压电路属于开关 … WebSep 30, 2024 · If you draw much more than 10mA from a PP3 sized 9V then your battery life will be rather short. It depends on the battery and the pattern of use. Constant drain will kill a battery more quickly than intermittent. I don't design PP3/6LR61 projects to draw over 5mA to get a 7-10 hour life.
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What is the max current I could draw from a 9V battery?
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