Based on an integrated circuit of the time, this circuit appeared in the October 1979 issue of Radio Electronics magazine. The circuit monitors voltages in the range of 10.5 to 16.0 V.
We found this circuit in the Linear Applications Handbook of the National Semiconductor of 1994....
This circuit was obtained from a 90sLinear Technology documentation. It is a current source that...
This is a possible circuit for the receiver of the previous circuit. Other circuits can be found...