In electronics, direct coupling (also called direct wired contact and conductive charging) is a way of interconnecting two circuits such that, in addition to transferring the AC signal (or information), the first stage also provides DC bias to the next. Thus, there is no need for a DC blocking capacitor to be used in order to interconnect the circuits, and this method is also known as DC coupling.
Read more about Direct Coupling: DC Bias, Uses, Offset Error, Advantages
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