Diode-or circuit

A diode-OR circuit is used in electronics to isolate two or more voltage sources. There are two typical implementations:

When a DC supply voltage needs to be generated from one of a number of different sources, for example when terminating a parallel SCSI bus, a very simple circuit like this can be used:

In digital electronics a diode-OR circuit is used to derive a simple Boolean logic function. This kind of circuit was once very common in Diode-transistor logic but has been largely replaced by CMOS in modern electronics:

This article is issued from Wikipedia - version of the 1/9/2013. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.