In the figure we have the configuration of series regulator protector suggested by Motorola in 1968 documentation. The transistors are of the time, being able to be used modern equivalents.
This circuit is from 2005 documentation. It automatically starts an irrigation pump when the...
This resistance meter circuit was found in the February 1984 issue of Radio Electronics magazine. It is...
In addition to keeping a battery constantly charged, this circuit only lights lamps when it is...