I just got done building one of these: <BR>http://www.hardforum.com/showthread...=npn+transistor <BR><BR>I used a 50kohm Liner Pot and NPN transistor MPS2222A ...
In the early days, PNP bipolar transistors were common, but the bulk of circuits you see today use NPN transistors. As [Aaron Danner] points out, many people think PNP transistors are “backward” but ...
The following automatic battery-charger design is created with a circuit that could qualify as the simplest window comparator ever built around a single transistor (see the figure). It starts charging ...
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