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采用ＬＭ３８９的单片对讲机林长浩ＬＭ３８９为美国ＮＳ公司生产的低压音庆功放集成电路，其内部集成了三个ＮＰＮ型晶体三极管和一个与ＬＭ３８６相似的功放电路，三个晶体管互相独立，几个极限工作参数为：ＢＶｃｅｏ—１２Ｖ；ＢＶｃｂｏ—１５Ｖ；Ｉ。。一２５ｍＡ：...
LM389 monolithic walkie-talkie Lin Chang-ho LM389 for the United States NS Company’s low-voltage audio amplifier amplifier integrated circuit, which integrates three internal NPN transistor and a similar LM386 power amplifier circuit, the three transistors independent of each other, a few extreme work The parameters are: BVceo-12V; BVcbo-15V; . A 25mA: ...