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.
Using a 4046 PLL this circuit generates rectangular signals in three wavebands that depend on the...
The circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor. The...
With this circuit it is possible to control two LEDs of different colors, making their color...