This circuit is from LinearTechnology Applications of 1997. The circuit uses components of the time used to raise the voltage of a battery from 3 to 6 V.
This is the project found in a 1981 publication, but it is still viable. It is a simple AM...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
Using a window comparator, this circuit trips over a certain range of input voltages. Formulas for...